distant control of ac relays, contactors, and starters

Bulletin No. M-379FNovember 1999

Raleigh, NC, USA

Replaces M-379E dated 11/84

Data Bulletin

1© 1984–1999 Schneider Electric All Rights Reserved

When a relay, contactor, or starter is mounted a considerable distance fromthe device controlling it, problems are introduced that are not present whenthe distance is relatively short. The major problems that arise are due to theseries impedance and shunt capacitance of the control wires and their effectupon the proper operation of the relay, contactor, or starter. Because of theinherent characteristics of AC operated magnets, these two problems areimportant at different times and can therefore be treated separately.

Due to the series impedance effect of the control wires in series with thedevice coil, the current drawn through the control wires causes a voltage dropwhich subtracts from the voltage available to the relay, starter, or contactorcoil. If the voltage drop due to this series impedance is large enough, thevoltage available to the device coil may not be sufficient for the device to pickup and seal properly. If the device fails to pick up or seal, and the pickupsignal is maintained, a coil burnout is likely.

The series impedance effect of the control wires is particularly importantwhen inrush current is present in the wires, since this is usually the only timewhen the current is sufficient to cause an appreciable difference between thesource voltage and the voltage available to the device coil. NEMA standardsrequire AC operated magnetic devices to operate satisfactorily at 85% of therated coil voltage. Allowing for a line voltage fluctuation of 10% below therated voltage, the voltage drop caused by the series impedance effect of thecontrol wires should be limited to 5% to insure satisfactory operation of thecircuit.

The tables beginning on page 5 of this bulletin show the maximum distancein feet between the relay, contactor, or starter and the device controlling it,based on a maximum difference of 5% between the source voltage and thevoltage available to the device coil during inrush conditions. This data isbased on 60 Hz voltage sources only.

In addition to series impedance, the control circuit wires also exhibit adistributed capacitance. The effect of this shunt capacitance is particularlyimportant when the relay, contactor, or starter circuit is opened and thedevice is to drop out. If the arrangement of the control circuit components issuch that the control wire shunt capacitance is in parallel with the STOPbutton, limit switch, or other disconnect means controlling the relay,contactor, or starter, a large enough amount of capacitance will prevent thedevice from dropping out even though the control circuit was opened. This isa very serious condition and must be prevented.

To determine if the effects of the shunt capacitance of the control wires mustbe considered, refer to Figures 1 and 2.

If the control device is remote (see Figure 1), and the control circuitcomponents are arranged so that the power source is adjacent to the devicecoil, the distributed wire capacitance will be in parallel with the controldevice (STOP button) and must be considered . Under these conditions, itis sometimes necessary to limit the length of the control wires so that thedistributed capacitance between the control wires does not exceed themaximum permissible value for the proper operation of the control circuit.

GENERAL THEORY

SERIES IMPEDANCE

Cd

Power Source Coil

Figure 1: Control Device

SHUNT CAPACITANCE

Cd

Power Source

Coil

Control Device

Figure 2: Power Source

Distant Control of AC Relays, Contactors, and Starters

Distant Control of AC Relays, Contactors and Starters Bulletin No. M-379FData Bulletin November 1999

2 © 1984–1999 Schneider Electric All Rights Reserved

This will shunt the device coil in the energized state even though the controlcircuit is open. (See Figure 2.)

If the power source is adjacent to the control device (STOP button), openingthe control device contact will de-energize the distributed capacitance andthe relay, contactor, or starter coil. The distributed wire capacitance neednot be considered in determining the length of the control wire run, sincethe capacitance does not prevent the STOP button from functioning. In suchcases, the series impedance effect of the control wires is the limiting factor.

In practical applications, the system should not be installed first and thentried out later. Even though the circuit may work properly initially, conditionsmay change due to wear, aging, deteriorating insulation, humidity, or otherfactors, and the relay, contactor, or starter coil being controlled may not pickup or drop out at some critical moment. For this reason, it is important tocalculate the maximum allowable control distance that permits continuedreliable operation.

In evaluating long runs of control wire that are difficult to maintain andinspect, it may be impossible to know the exact location of the wires, thethickness of the insulation or other characteristics that can affect theimpedance or capacitance of the control wires throughout the entire run. Forthis reason, any calculation of the maximum length of a wire run must besimplified. Figure 3 shows a normal three-wire control scheme with thesource, hold, and coil wires and the conduit shown in cross section. Both L2and the conduit are properly grounded.

To maintain the proper operation of the circuit, always assume the worst case(See Figure 4). The worst case occurs when:

1. The conduit is filled with water due to condensation, flooding, or otheraccident.

2. The conduit and/or L2 are ungrounded.

3. The source wire (L1 to the stop station) is shorted at a termination point,or shorted to the conduit, due to the failure of the wire insulation.

These conditions can be present in the circuit without causing the controlcircuit fuse to blow.

Figure 4 shows that the water and source wire are at the same potential (L1)due to the short. The coil and hold wires each exhibit a capacitance (Cw)between the wire and the surrounding water. The water acts as one plate ofthe capacitor; the insulation acts as the dielectric; and the wire acts as theother plate of the capacitor.

The distances shown in the tables in this bulletin are calculated by usingmanufacturers' specifications for machine tool wire (MTW) used in the controlcircuit at 60 Hz. A dielectric constant of 8 is assumed. Use of different wire orcable, such as “Romex” or coaxial cable, alters the conditions and makes thedistance values shown in the tables incorrect. Consult your local Square Dfield office for assistance.

1. Determine whether the distributed wire capacitance is in parallel with thestop button (refer to Figures 1 and 2). If the capacitance is not in parallelwith the stop button, the distributed wire capacitance need not beconsidered.

2. Refer to the table giving shunt capacitance and series impedancedistances for the class and type of device in question.

3. Based on the control circuit voltage and wire size, determine the shuntcapacitance (two or three-wire control) and series impedance distancefrom the appropriate table.

APPLICATION

L1 Hold Wire Enclosure L2

Fuse

SourceWire

Coil Wire

Conduit

GND

WireInsulation

Stop Start

OLMM

Figure 3: Three-Wire Separate Control —ProperlyGrounded

L1 Hold Wire Enclosure L2

Fuse

SourceWire

CoilWire

Conduit

Water

Short

Stop Start

OLMM

Broken Groundor Ungrounded

Cw

Figure 4: Three-Wire Separate Control in WaterFilled Conduit —Not Properly Grounded

HOW TO USE THE TABLES

Bulletin No. M-379F Distant Control of AC Relays, Contactors and StartersNovember 1999 Data Bulletin


NOTE: All tables refer to American Wire Gauge (AWG) copper wire.

4. When the shunt capacitance distance is greater than the seriesimpedance distance, the series impedance distance is the limiting value.(In this case, to avoid confusion, the shunt capacitance value does notappear in the table and reference to a footnote is made.)

5. When the shunt capacitance distance is less than the series impedancedistance, the shunt capacitance distance is the limiting value.

Several methods can reduce the problems of series impedance and shuntcapacitance caused by long runs of control wires. The control distance of astarter or contactor can sometimes be increased by using one of the methodsshown in Figure 5.

Since the burden of a control relay coil is generally less than the burden of astarter or contactor coil, the starter or contactor’s control distance cansometimes be increased by using an interposing control relay, provided theshunt capacitance of the control wires does not become the limiting factor.The control relay, which is used to pick up the starter or contactor at linevoltage, can be powered from a control transformer, or from line voltage (seeFigures 5 and 6).

After the control relay is sized, based on the line voltage and coil current,follow steps 1 to 5 under “How to Use the Tables” to determine the maximumcontrol distance.

If shunt capacitance becomes the limiting factor (since coils with a lowerburden generally require less shunt capacitance to hold them in theenergized position even though the control circuit is open) the arrangementusing an interposing AC control relay can be altered to use an interposing DCcontrol relay instead. If the voltage across the control wires is DC, the shuntcapacitance cannot conduct; therefore, it does not cause a problem (SeeFigure 7). Series impedance then becomes the limiting factor.

An elaboration of the scheme above using an interposing DC control relay isto use a DC relay controlled by a solid state amplifier. This arrangement

ALTERNATE SOLUTIONS

Interposing AC Control Relay

L1

L2

L3

1

CR

M2 3

M

M

M

M

OL

OL

OL

All OL's

CR

Motor

T1T2T3

GND

3 PhaseMotor

Enclosure

InterposingRelay

ConduitStop Start

2 Wire ControlIf used

Figure 5: Interposing Control Relay atLine Voltage

Interposing DC Control Relay

L1

L2

L3

1

M2 3

M

M

M

M

OL

OL

OL

All OL's

CR

Motor

T1T2T3

GND

3 PhaseMotor

Enclosure

ConduitStop Start


Fuse

CR

X1 X2Sec

Pri

Figure 6: Interposing Control Relay and Transformer

Interposing DC Control Relay and Solid StateAmplifier



eliminates the problem of shunt capacitance, as well as greatly reducing thecontrol circuit burden and, therefore, the effect of the series impedance.

If an interposing relay is not used and the distance limiting problem is due tothe shunt capacitance effect on the control wires, a mechanically-heldcontactor or relay can be used, provided it has coil-clearing contacts (makesure that the relay or contactor selected will work properly with the use of coilclearing contacts). Since the coil clearing contacts are always locatedadjacent to the contactor coil, they are not shunted by the control wires’capacitance (see Figure 8). Series impedance becomes the limiting factor.Contact your Square D representative for help in selecting the propermechanically-held device for your application (since the control distancedepends upon the impedance of the latch and unlatch coils).

Figure 9 shows a circuit arrangement with an extra set of normally opencontacts attached to the stop button. When the stop button is pressed, anycurrent carried by the shunt capacitance is shorted to ground and bypassesthe coil. When the stop button is released, the shunt capacitance again feedsthe current to the starter coil, but it is very unlikely that the current value willbe high enough for the coil to pick it up.

IMPORTANT! Always ensure that when the stop button is pressed, L1 is notshorted to ground as a result of arcing on the stop button contacts. Forexample, when using Class 9001 push buttons, the arc may transfer if a TypeKA1 contact block is used. Instead, use a KA3 contact block for the stopbutton and a separate KA2 contact block to short the shunt capacitance toground.

Resistance sensitive relays are devices with input sensitivity that enablesthem to operate from substantially lower currents than standardelectromechanical relays. Therefore, they are often able to operate overgreater distances than electromechanical relays. Contact your Square Drepresentative for complete application details.

NOTE: Use two isolated contact blocks for this function.

L1

L2

L3

CR

DC Source

M

M

M

M

OL

OL

OL

OL

CR

T1T2T3

GND

Motor

Enclosure

Conduit

StopStart


M

Figure 7: Interposing DC Control Relay

L1

L2

L3

( LatchCoil )

M

M

M

M

OL

OL

OL

T1T2T3

GND

Motor

Enclosure

Conduit

M

MM

**

*

( UnLatchCoil )

Figure 8: Mechanically Held Contactor or Relay* Overload Protection not Provided by Contactor

Discharging Shunt Capacitance

MM

OL

Stop Start

120 V Supply

Enclosure

Conduit

L1 L2

Figure 9: Capacitance Discharge Scheme

Resistance Sensitive Relays



The maximum control distance in feet between the device and its controlstation is shown. Calculations take into account two or three lengths of wireand the values shown represent the actual distance between the device andcontrol station. Shunt capacitance distances are based on full sourcevoltage. Series impedance distances are based on a difference of 5%between the coil and source voltage during inrush conditions. All valuesshown are for 60 Hz only.

TablesClass 8501, Type C

Maximum Control Distance

Table 1: Maximum control distance in feet due to Shunt Capacitance (3-wire control in water filled conduit)

Class Type Series Poles VoltageWIRE GAUGE

#16 #14 #12 #10 #8 #6

8501 CO1 B 1

6122448

120208240

****

760250190

****

685220170

***

3500570190140

***

2800450150110

***

3100510165125

***

3300535175130

* Distance for series impedance is shorter and is the limiting value.



#16 #14 #12 #10 #8 #6

8501 CO1 B 1

6122448

120208240

****

1500500380

****

1300455340

****

1100380285

***

5600900300225

***

63001000

330255

***

67001000

355265


Table 3: Maximum control distance in feet due to Series Impedance


#16 #14 #12 #10 #8 #6

8501 CO1 B 1

6122448

120208240

25100400

1600100003030040300

35155630

2500158004750063200

60245980

3900246007390098400

90375

15006000

37900114000151700

140575

23009200

57800173600231200

215865

34001380086600

260400346600




Class 8501, Type C




#16 #14 #12 #10 #8 #6

8501 CO-5 A 1

6122448

120208240

****

305100

75

***

1700275

9065

***

1400230

7555

***

1100180

6045

***

1200205

6550

***

1300215

7050




#16 #14 #12 #10 #8 #6

8501 CO-5 A 1

6122448

120208240

****

615205150

****

550180135

***

2800460150115

***

2200365120

90

***

2500410135100

***

2700430140105




#16 #14 #12 #10 #8 #6

8501 CO-5 A 1

6122448

120208240

25110445

1700111003340044500

40170695

2700173005220069500

65265

10004300

2690080900

107700

100410

16006500

41200123800164900

155620

24009900

62200186900248800

230920

36001470092100

276700368400




Class 8501, Type C




#16 #14 #12 #10 #8 #6

8501 CO11 A 1

6122448

120208240

***

1100175

5540

***

1 000160

5040

***

840130

4030

***

665105

3525

***

750120

3530

**

3100790125

4030




#16 #14 #12 #10 #8 #6

8501 CO11 A 1

6122448

120208240

****

355115

85

***

2000320105

80

***

1600265

8565

***

1300210

7050

***

1500240

7560

***

1500250

8060




#16 #14 #12 #10 #8 #6

8501 CO11 A 1

6122448

120208240

25115465

1800117003510046800

45180730

2900182005490073100

70280

11004500

2830085100

113300

105430

17006900

43400130500173700

160655

26001050065600

197200262500

240970

38001550097400

292600389600




Class 8501, Type C




#16 #14 #12 #10 #8 #6

8501CO15

CO16A S DT

6122448

120208240

****

730240180

****

660215165

***

3440550180135

***

2730435145105

***

3070490160120

***

3230515170125




#16 #14 #12 #10 #8 #6

8501CO15

CO16A S DT

6122448

120208240

****

1465485365

****

1320435330

****

1100365275

***

5465870290215

***

6140980325245

***

64651030

340255




#16 #14 #12 #10 #8 #6

8501CO15

CO16A S DT

6122448

120208240

25105425

1715107403227542970

40165670

2680167605036067045

60255

10354145

2592577890

103700

95395

15856340

39625119055158505

145595

23859545

59655179230238625

220880

35201409088080

264640352335




Class 8501, Type H


Table 14:



#16 #14 #12 #10 #8 #6

8501 H A,B,C 2-8

6122448

120208240

*****

780585

*****

700525

****

1700585435

****

1300460345

****

1500520390

****

1600545410


Maximum control distance in feet due to Shunt Capacitance (2-wire control in water filled conduit)


#16 #14 #12 #10 #8 #6

8501 H A,B,C 2-8

6122448

120208240

*****

15001100

*****

14001000

*****

1100875

****

2700925695

****

31001000

780

****

33001000

825




#16 #14 #12 #10 #8 #6

8501 H A,B,C 2-8

6122448

120208240

17

30125790

23003100

31045

195124037004900

41575

305193558007700

725

115475

29008900

11900

1045

180725

45001360018200

1565

27010006900

2050027300




Class 8501, Type HX




#16 #14 #12 #10 #8 #6

8501 HX C 8-12

6122448

120208240

*****

13651025

*****

1225920

*****

1025770

*****

810610

****

2745910685

****

2890960720




#16 #14 #12 #10 #8 #6

8501 HX C 8-12

6122448

120208240

******

2050

*****

24551845

*****

20501540

*****

16251220

*****

18251370

*****

19251445




#16 #14 #12 #10 #8 #6

8501 HX C 8-12

6122448

120208240

16

2095

62018752495

29

35155975

29353910

31560

240152045656080

52090

370234070309360

835

140565

35551068014220

1050

210850

53101596021250




Class 8501, Type KF




#16 #14 #12 #10 #8 #6

8501 KF C All

6122448

120208240

***

1725275

9065

***

1550245

8060

***

1295205

6550

***

1025160

5040

**

46201155

1806045

**

48651215

1906045




#16 #14 #12 #10 #8 #6

8501 KF C All

6122448

120208240

***

3450550180135

***

3105495165120

***

2590410135100

***

2055325105

80

***

2310365120

90

***

2430385125

95




#16 #14 #12 #10 #8 #6

8501 KF C All

6122448

120208240

60245985

3950247157426098870

95385

15456195

38725116355154910

150600

24109640

60255181030241020

230925

37101485592860

279005371455

35014105655

22620141375424760565506

52521158470

33885211805636370847235




Class 8501, Type KP, KU




#16 #14 #12 #10 #8 #6

8501 KP, KU C All

6122448

120208240

***

1485235

7555

***

1335210

7050

***

1115175

5540

**

3540885140

4536

**

3980995155

5035

**

41901045

1655540




#16 #14 #12 #10 #8 #6

8501 KP, KU C All

6122448

120208240

***

2970475155115

***

2675425140105

***

2230355115

85

***

1770280

9070

***

1990315105

75

**

83802095

335110

80




#16 #14 #12 #10 #8 #6

8501 KP, KU C All

6122448

120208240

75300

12054835

3023090825

120920

115470

18907575

47365142315189475

180735

29451179073705

221450294835

28011354540

18175113615341355454470

43017306920

27680173010519800692045

6452590

1037041480

259275778990

—




NOTE: Distances shown below apply only to those Type L relays utilizing the31111-400 series coils.

Class 8501, Type LO




#16 #14 #12 #10 #8 #6

8501 LO A 2–8

6122448

120208240

*****

670500

*****

600450

****

1510500375

****

1200400300

****

1350445335

****

1420470355




#16 #14 #12 #10 #8 #6

8501 LO A 2–8

6122448

120208240

*****

13401005

*****

1250905

*****

1005755

****

2400800600

****

2700895675

****

2840945710

* Distance for series impedance is shorter and is the limiting value..



#16 #14 #12 #10 #8 #6

8501 LO A 2–8

6122448

120208240

21040

170106532054265

41565

265167050256695

625

100415

26057835

10430

1040

160640

40251210016110

1560

245980

61451847024595

2090

36514759240

2777036975




Class 8501, Type R




#16 #14 #12 #10

8501 R A 4 DT

6122448

120240

***

835130

30

***

750120

30

**

2515625100

25

**

1995495

7515




#16 #14 #12 #10

8501 R A 4 DT

6122448

120240

***

1675265

65

***

1505240

60

***

1255200

50

**

3995995155

35




#16 #14 #12 #10

8501 R A 4 DT

6122448

120240

80330

13355340

33390133560

130520

20958395

52485209940

205820

32801312582035

328145

31512705090

20360127250509015




Class 8501, Type XO




#16 #14 #12 #10 #8 #6

8501 XO A All

6122448

120208240

*****

430325

****

1170390290

****

975325240

****

775255190

****

870290215

****

915305225




#16 #14 #12 #10 #8 #6

8501 XO A All

6122448

120208240

*****

865650

*****

780585

****

1950650485

****

1550515385

****

1740580435

****

1835610455




#16 #14 #12 #10 #8 #6

8501 XO A All

6122448

120208240

31045

195124537454990

41575

310193558257755

725

115475

29808960

11925

1045

180720

45201358518085

1565

26510756730

2023026935

2095

39015659805

2945539220




Class 8501, Type XL




#16 #14 #12 #10 #8 #6

8501XL

(UnlatchCoil� �� )

A All

6122448

120208240

****

925305230

****

830275205

****

695230170

****

550180135

***

3875620205155

***

4080650215160

* Distance for series impedance is shorter and is the limiting value.�� For information on pick-up coil, see “Class 8501, Type XO” on page 15.



#16 #14 #12 #10 #8 #6

8501

XL(Unlatch

Coil� �� )A All

6122448

120208240

****

1850615460

****

1665555415

****

1390460345

****

1100365275

****

1240410310

****

1305430325




#16 #14 #12 #10 #8 #6

8501

XL(Unlatch

Coil� �� )A All

6122448

120208240

1045

195790

49501487519805

1575

31012407780

2337031120

30120485

1940121503650548605

45185750

3010188255657075315

70285

11554620

2887586765

115515

105435

17456990

43690131275174760





Class 8502/ 8536, Type SA




#16 #14 #12 #10 #8 #6

85028536

SA B 2-3

6122448

120208240277480600

*****

800600450150

95

*****

715540405135

85

****

1800600450335110

70

****

1430475355265

8555

****

1605535400300100

60

****

1690560420315105

65




#16 #14 #12 #10 #8 #6

85028536

SA B 2-3

6122448

120208240277480600

*****

16001200

900300190

*****

14351080

810270170

*****

1200900675225140

****

2860950715535175110

****

32151070

800600200125

****

33851125

845635210135




#16 #14 #12 #10 #8 #6

85028536

SA B 2-3

6122448

120208240277480600

28

30135850

256534154550

1367521365

31050

2101335401553457120

2139033420

52080

330207062308295

110553319551870

730

125505

31859570

12745169755098079660

1045

190770

482514505193102572577250

120705

1570

28611507185

215952875538305

115020179720




Class 8502/8536, Type SB and SC

Class 8903, Type SM (Electrically Held)




#16 #14 #12 #10 #8 #6

85028536

SBSC

A All

6122448

120208240277480600

*****

880660495165105

*****

795595445145

95

*****

660495370120

75

****

1500525395295

9560

****

1700590440330110

70

****

1800620485350115

70

8903 SM




#16 #14 #12 #10 #8 #6

85028536

SBSC

A All

6122448

120208240277480600

******

1300995330210

*****

15001100

895295190

*****

1300995745245155

*****

1000790590195125

*****

1100885665220140

****

37001200

935700230145

8903 SM




#16 #14 #12 #10 #8 #6

85028536

SBSC

A All

6122448

120208240277480600

15

2085

5351600210028008600

13400

28

30135845

250033004500

1350021100

31050

2101300390052007000

2100032900

52080

325200061008100

108003250050900

730

120495

31009300

12400165004970077700

1045

185745

460014000186002490074700

116800

8903 SM




Class 8502/8536, Type SD

Class 8903, Type SP (Electrically Held)




#16 #14 #12 #10 #8 #6

85028536

SD

A 2 & 3

6122448

120208240277480600

*****

1300980735245155

*****

1100885665220140

*****

980735550180115

*****

780585440145

90

****

2600875655490160105

****

2700920690520170110

8903 SP




#16 #14 #12 #10 #8 #6

85028536

SD

A 2 & 3

6122448

120208240277480600

******

19001400

490315

*****

230017001300

440280

*****

190014001100

365235

*****

15001100

880290185

*****

17001300

985325210

*****

180013001000

345220

8903 SP




#16 #14 #12 #10 #8 #6

85028536

SD

A 2 & 3

6122448

120208240277480600

15

2080

5151500200027008300

12900

28

30125810

240032004300

1290020200

31050

2001200370050006600

2000031200

41575

305190057007600

101003050047600

725

110455

28008500

11400152004570071500

1040

165670

420012600168002240067200

105100

8903 SP




Class 8502/8536, Type SD

Class 8903, Type SP (Electrically Held)




#16 #14 #12 #10 #8 #6

85028536

SD

A 4 & 5

6122448

120208240277480600

*****

975730550180115

*****

875660495165105

*****

730550410135

85

*****

580435325105

65

****

1960650490365120

75

****

2065685515385125

80

8903 SP




#16 #14 #12 #10 #8 #6

85028536

SD

A 4 & 5

6122448

120208240277480600

******

14651100

365230

*****

17551320

990330210

*****

14651100

825275175

*****

1160870655215135

*****

1305890735245155

*****

13751030

775255165

8903 SP




#16 #14 #12 #10 #8 #6

85028536

SD

A 4 & 5

6122448

120208240277480600

03

1560

38011501530204061259575

15

2095

5951790238531759540

14905

29

35145915

276036754895

1470022975

31055

2201395420055907445

2236534945

52080

330209062808360

111403345052270

730

120485

30609195

12245163104898076530

8903 SP




Class 8502/8536, Type SE

Class 8903, Type SQ (Electrically Held)




#16 #14 #12 #10 #8 #6

85028536

SE

A 2 & 3

2448

120208240277480600

*****

825275175

****

990740245155

***

1000825620205130

***

870655490160100

***

980735550180115

***

1000775580190120

8903 SQ




#16 #14 #12 #10 #8 #6

85028536

SE

A 2 & 3

2448

120208240277480600

******

550350

*****

1400495315

****

16001200

410260

***

17001300

980325205

***

190014001100

365235

***

200015001100

385245

8903 SQ




#16 #14 #12 #10 #8 #6

85028536

SE

A 2 & 3

2448

120208240277480600

935

230695925

120037005700

1455

36010001400190057009000

2085

5551600220029008900

13900

30135845

250033004500

1350021200

50200

1200380050003700

2030031800

70295

1800560074009900

2990046700

8903 SQ




Class 8502/8536, Type SE

Class 8903, Type SQ (Electrically Held)

Class 8502/8536, Type SF

Class 8903, Type SV (Electrically Held)




#16 #14 #12 #10 #8 #6

85028536

SEA 4 & 5

2448

120208240277480600

******

495315

******

445285

*****

1100370235

***

15001100

885295185

***

17001300

995330210

***

180013001000

345220

8903 SQ

85028536

SFA All

8903 SV




#16 #14 #12 #10 #8 #6

85028536

SE A 4 & 52448

120208240277480600

******

990630

******

890570

******

740475

*****

1700590375

****

26001900

660420

****

27002000

695445

8903 SQ

85028536

SFA All

8903 SV




#16 #14 #12 #10 #8 #6

85028536

SE A 4 & 52448

120208240277480600

520

145445595795

23003700

935

230695925

120037005700

1055

35510001400190057008900

2085

5401600210028008600

13500

30125805

240032004200

1280020100

45185

1100350046006200

1870029300

8903 SQ

85028536

SFA All

8903 SV




Class 8502/8536, Type SGO

Class 8903, Type SXO (Electrically Held)




#16 #14 #12 #10 #8 #6

85028536

SGO

B All

120208240277480600

****

480940

****

430845

****

360705

***

850280560

**

1280960320630

*179013401010

340660

8903 SXO




#16 #14 #12 #10 #8 #6

85028536

SGO

B All

120208240277480600

****

9501800

****

8601600

****

7201400

****

5701100

***

1920640

1200

***

2000670

13008903 SXO




#16 #14 #12 #10 #8 #6

85028536

SGO

B All

120208240277480600

65200270355

10702100

105320420565

17003300

165500670890

27005000

260790

1050140042007500

4101240164022006600

11000

640192026003400

1020015600

8903 SXO




Class 8502/8536, Type SH

Class 8903, Types SY, SZ (ElectricallyHeld)




#16 #14 #12 #10 #8 #6

85028536

SH

A All

120208240277480600

****

475305

****

425270

****

355225

***

850280180

**

1200955315200

**

13001000

335215

8903 SY, SZ




#16 #14 #12 #10 #8 #6

85028536

SH

A All

120208240277480600

****

950610

****

855545

****

715455

****

565360

***

1900635405

***

2000670430

8903 SY, SZ




#16 #14 #12 #10 #8 #6

85028536

SH

A All

120208240277480600

65200265355

10001600

105315420560

16002600

165495660880

26004100

255765

1000130040006300

39011001500200062009700

5851700230031009400

147008903 SY, SZ




Class 8502/8536, Type SJ

Class 8903, Types SJ (Electrically Held)




#16 #14 #12 #10 #8 #6

850285368903

SJ A All

120208240277480600

****

255160

****

230145

***

575190120

**

610455150

95

**

685510170105

*960720540180115




#16 #14 #12 #10 #8 #6

850285368903

SJ A All

120208240277480600

****

510325

****

460295

****

380245

***

915305195

***

1025340215

**

14401080

360230




#16 #14 #12 #10 #8 #6

850285368903

SJ A All

120208240277480600

40130175235710

1110

70210280375

11251760

110335445590

17802785

175525700935

28104395

275830

1105147044206910

4301295173023006920

10810




Class 8903, Type L (Electrically Held)




#16 #14 #12 #10 #8 #6

8903 L B 2-6

6122448

120208240

*****

780585

*****

700525

****

1700585435

****

1300460345

****

1500520390

****

1600545410




#16 #14 #12 #10 #8 #6

8903 L B 2-6

6122448

120208240

*****

15001100

*****

14001000

*****

1100875

****

2700925695

****

31001000

780

****

33001000

825




#16 #14 #12 #10 #8 #6

8903 L B 2-6

6122448

120208240

17

30125790

23003100

31045

195124037004900

41575

305193558007700

725

115475

29008900

11900

1045

180725

45001360018200

1565

27010006900

2050027300





Class 8903, Type L (Electrically Held)




#16 #14 #12 #10 #8 #6

8903 L B 8-12

6122448

120208240

*****

13651025

*****

1225920

*****

1025770

*****

810610

****

2745910685

****

2890960720




#16 #14 #12 #10 #8 #6

8903 L B 8-12

6122448

120208240

******

2050

*****

24551845

*****

20501540

*****

16251220

*****

18251370

*****

19251445




#16 #14 #12 #10 #8 #6

8903 L B 8-12

6122448

120208240

16

2095

62018752495

29

35155975

29353910

31560

240152045656080

52090

370234070309360

835

140565

35551068014220

1050

210850

53101596021250

Electrical equipment should be serviced only by qualified electrical maintenance personnel. Noresponsibility is assumed by Schneider Electric for any consequences arising out of the use of thismaterial.


Square D Company8001 Hwy 64 EastKnightdale, NC 27545888-SquareD (778-2733)www.squared.com

© 1984–1999 Schneider Electric All Rights Reserved28

distant control of ac relays, contactors, and starters

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