reed switches catalog - hte · the hold value is the lower limit of the applied magnetic field at...

Ryazan Metal Ceramics Instrumentation Plant Joint Stock Company (RMCIP JSC)

REED SWITCHES CATALOG

RYAZAN 2003

Contents

Reed Switches

Ultra Miniature

MKA-07101

MKA-10109

Miniature

MKA-14103

MKA-16101

General Application

KAM-2

MKA-20101

High Power

MKA-50201

MKA-50202

Form C

KAM-3

MKC-27103

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Ryazan Metal Ceramics Instrumentation Plant Joint Stock Company (RMCIP JSC)

has been specialized in producing reed switches from 1967. RMCIP JSC manufactures over

15 different types of dry reed switches designed for switching AC and DC signals at a

frequency of 10 kHz.

The manufacture at the factory is technically advanced with a high level of automated

control and specific requirements for cleanliness of the production area and quality of power

supply systems.

The factory is equipped with unique automated stamping machines, automated

equipment for cutting and fire-polishing glass, automated sealing equipment, plating station

for fine contact plating, automated measuring and test equipment.

A dry reed switch is an assembly containing ferromagnetic contact blades,

hermetically sealed in a glass tube that is filled with inert gas. The switch is operated by

an externally generated magnetic field, either from a coil or permanent magnet.

FEATURES

- Hermetically sealed glass tube ensures high performance in severe ambient

conditions (dust, gases, liquids);

- Long life (life expectancy to 15 years, life time to 108);

- Low contact resistance;

- Ambient operating temperature (-60°C to +155°С);

- Immunity to mechanical effects;

- Immunity to chemical attack;

- Low operating power, maintenance-free operation: by permanent magnet or

electromagnetic coil;

- High-response operation;

- Compact and light in weight;

- Low cost.

SCOPE OF APPLICATION

• Reed relays, for use in:

- Audio and video equipment

- Broadcast equipment

- Transport

- Domestic appliances

- Measuring and test equipment

- Military applications

- Aircraft

- Security systems

- Telephony

• Keyboards, for use in:

- Computers

- Military equipment

- Telephones

• Key switches, for use in:

- Audio and video equipment

- Domestic appliances

• Proximity switches, for use in:

- Conveyors

- Elevators

- Robotics

- Aircraft

• Security system applications, used in:

- Door sensors

- Window sensors

- Position sensors

• Miscellaneous applications, including:

- Flow sensors

- Level detectors

- Thermostats

- Domestic machines

- Toys

REED SWITCH CHARACTERISTICS PULL-IN AND DROP-OUT VALUES

The PULL-IN VALUE is the ampere-turn value at which normally-open contacts

close.

The DROP-OUT VALUE is the ampere-turn value at which normally-open contacts,

held closed by a magnetic field, will reopen as field strength is reduced.

The NON PULL-IN VALUE is the upper limit of the applied magnetic field at which

the dry reed switch shall not operate.

The HOLD VALUE is the lower limit of the applied magnetic field at which the closed

reed switch shall remain physically closed.

The SATURATE VALUE is the arbitrary defined value of the applied magnetic field

at which the dry reed switch is unaffected by further increase of the applied magnetic field

(see Fig.1).

Pull-In and Drop-Out values are measured in the measuring coils and are calculated as

the product of the current passing through the coils and the number of turns when the reeds

operate (release).

BOUNCE, RELEASE, OPERATE TIME

The OPERATE TIME is the time between the instant of application of a magnetic field

to a dry reed switch and the instant of the last physical closing of this switch. The operate time

includes the bounce time.

The RELEASE TIME is the time between the instant of removal of an applied

magnetic field to a dry reed switch and the instant of the last physical opening of this switch.

The release time includes the bounce time.

The BOUNCE TIME is the interval of time between the instant of the initial closing (or

opening) and the instant of final closing of the dry reed switch.

Time parameters are determined by measuring time intervals in accordance with

diagrams in Fig.2.

SATURATE VALUE

DROP-OUT VALUE

PULL-IN VALUE

Fig.1 Graphical representation of parameters

t(ms)

NON PULL-IN VALUE

HOLD VALUE

At

The time parameters are determined when the rectangular pulse is applied to the coil

energized at 1.5 times the operate value.

Uc

Uг

Figure 2

t

1

t1

2

t4

t

t3 t2 t2

t5

1- coil voltage 2- reed lead voltage t1- closing time t2- bounce time t3-opening time t4-operate time t5- release time

(V)

(ms)

(ms)

(V)

REED SWITCH RESISTANCE

The reed switch resistance includes the reed blade resistance and the contact resistance.

The contact resistance is measured by the four-point method (Kelvin Method) when the

contacts are closed. The measuring instrument should be connected to the reed switch at a

distance not more than 8 mm from the glass tube. Measuring conditions 6V-10mA or 20mV-

10mA. The coil is energized at 1.5 times the operate value.

BREAKDOWN VOLTAGE

The BREAKDOWN VOLTAGE is the maximum voltage (AC, DC) the switch can

withstand without leakage between open contacts.

The test voltage is applied to the open reed switch for not less than 1min. or for not

less than 1 sec. when it is increased at 1.1 times. The breakdown current is 1-20 mA.

INSULATION RESISTANCE

The INSULATION RESISTANCE – is the resistance of the reed switch with open

contacts.

It is measured at 100V for not less than 1 min.

REED SWITCH CAPACITANCE

The CAPACITANCE is the capacitance between overlapping reeds in the contact area

in their open position.

The capacitance is measured at a frequency of 1000 Hz and at a voltage of not more

than 50V.

LIFE EXPECTANCY

The life of a dry reed switch is influenced by:

- The load and the load circuit parameters

- Switching frequency

- Ambient temperature

- The applied magnetic field

METHODS OF OPERATING REED SWITCHES

Operation using a coil

The coil must produce the magneto-motive force required to operate the switch and

hold it closed. The coil is energized at 1.5 times the operate value.

Figures 3-5 illustrate various methods of operating the switch using a coil Figure 3. A dry reed switch mounted within a coil Figure 4. A dry reed switch mounted outside a coil

Operation using permanent magnets

Various combinations of magnet and the switch positions effect operation. The main methods of operating are illustrated in figures 6-12.

Solid lines indicate Pull-In, section lines indicate Drop-Out.

SN

SN

S N

SN

Figure 5. A dry-reed switch biased by a permanent magnet and operated by a coil

Х

S

-Х Х

Y

0

N

Y

0 -Х Х

off 2 on 2

off 1 on 1 off 3 on 3

Figure 6

Х

S

-Х Х

0

N

Y

Z

Z

0 -Х Х

Y

off 2 off 1

on 1

off 3

on 3

-Z -Z -Z

Z Z ZYY

on 2

Figure 7

on

off

S N

Yoff 2

on 2 off 1 on 1

off3 on 3

0

YY

0

-Х Х Figure 8

on

off

S

N

Х

on 2 off 1 on 1

0

-Х Х

Y

Х

Y 0

Y

off 2

Figure 9

Y

S

N

-Х Х

Z

0

Z

Х on 2

off1

on1

0

Yoff 2

Z Z YY

Figure 10 -Z-Z

S

N

Y

off 2 on 2 off1

on 1

-Х Х

0

Figure 11

Х

-Х Х

0

Y

S N

α

-Х

-Х

Х

Х0 0 0

on2

on3

on1

off3

off2

off1

off3

180˚

off2

180˚

off1

180˚

on

1

on2

on3

Figure 12

αα α

OPERATION INSTRUCTIONS

While the reed switch is in use avoid any mechanical stresses with associated hazard of

broken glass and leads.

Care must be taken to prevent from any affect of the external magnetic field.

Reed switches should be operated within characteristics as stated.

The current through contacts must not exceed the maximum switching current, the

supply voltage must not exceed the maximum switching voltage, the load voltage must not

exceed the maximum contact rating.

Stray inductance and capacitance should be taken into account. To reduce their

influence the load should be located within the close proximity of the reed switch.

In case of no load, life time is 108. As the load increases the life time reduces. It is

caused by erosion processes taking place on contact surfaces when reeds close/open. To

enhance reed switch reliability protective circuits are recommended (Figs.13-16).

-When using reed switches for resistive loads the contact-protection is carried out with an RC-

network (Figure 13).

To prevent arc striking the following condition must be fulfilled:

Where, Vr – reed blade voltage when the contacts are opened, V;

V – supply voltage, V;

R – resistance value, Ohm;

Rl – load resistance, Ohm;

Load resistance is calculated by:

V+ –

С R Rl

Figure 13

10≤+

=l

r RRRVV

lswitch IIVR

−≥

.max.

Where,

Iswitch.max.– maximum switching current, А;

Il – load current, А;

The capacitance value is expressed by: С=(0,05÷1,0)·Iswitch

Where,

С – capacitance value, µF

Iswitch – switching current, А;

When using reed switches for inductive loads the contact protection is carried out with

a diode (Figure 14).

The rated current of the diode must not exceed the switching current.

The reverse rated voltage must not exceed the supply voltage V.

-When using reed switches for capacitive loads the contact protection is carried out

with a resistor (Figure 15).

+ –

Rl

Figure 14

LlV

lRVI =

Rl

Figure 15

Сl

R

V + –

The resistance value is calculated by:

R≥V/Iswitch.max.

Or

R>V2/Pmax.

Where,

Imax. – maximum switching current

Pmax. – maximum contact rating.

- When using reed switches for lamp loads the contact protection is carried out with a

resistor (Figure 16).

To reduce the high inrush current to Iswitch.max. value the following condition must be

fulfilled:

R+Rcl = V/Iswitch.max.

Where,

Rcl.-the cold lamp resistance that is 8-14 times less than the hot lamp resistance

R – the resistance value

l

Figure 16

R

V + –

MOUNTING INSTRUCTIONS

Reed switches can be used both for plug-in and PCB mounting.

When mounting extreme caution should be exercised not to exert any undue stress that

can result in damage or leakage of the reed switch. It is recommended to provide an adequate

spacing between the reed switches.

When it is necessary to connect more than one wire to the leads the second and all next

wires must be soldered (or welded) to the earlier soldered wire but not to the lead. The wire

section must be equal to the reed lead section.

When welding or soldering reed switches deformation should be minimal. The output

power of the soldering iron must not exceed 100 W. The time of continuous heating of the

leads should not exceed 3 sec.

In case of re-soldering time is needed for the switch to be cooled after the earlier

heating. Soldering is permitted at a temperature of the soldering iron of not more than 2600C.

Recommended distance between the glass end and a bending point should be 3mm

min. When bending a reed switch lead but not glass body should be firmly hold to avoid a

broken glass. Re-bending is not acceptable. Figure 17 shows cutting techniques.

Note: bending and cutting can change pull-in and drop-out characteristics.

Figure 17

QUALITY ASSURANCE AND QUALITY CONTROL AT PRE-SERIES PHASE

(DESIGN AND R&D) AND AT SERIES A TÜV approved quality system of the factory has been developed and is currently operating

to meet ISO9001 quality requirements.

It is the factory managerial consideration that the factory quality system is the basics of

reliable and honest relationship between customers and suppliers. Following is the basis to

achieve a required quality level:

- State-of-art process application;

- Each employee’s interest in improving product quality;

- Continuous quality improvement;

- On-going personnel education.

Reed switches are UL recognized with File # E229065 for NRNT2 Switches, Industrial

Control-Component.

Figure 18 shows quality control and inspection flow chart for reed switch production cycle.

Cleaning

Deburring and Polishing

Glass Tube Cleaning

Plating

Leakage Test

Incoming Inspection

Glass Tube Annealing

- Operator Inspection

- Quality Control

Glass Tube Inspection and Packing

Glass Fire-Polishing

Clean Room

- Materials Supplied

Figure 18. Quality control and inspection flow chart for the production cycle

Visual Inspection

Sorting and Packing

Stamping

Glass Tube

Packing

Glass Cut

Testing for Electrical Parameters

Incoming Inspection

Wire

Sealing

Blade Inspection and Packing

Specifications for MKA-07101

Contact form 1AContact material RuMaximum switching power , W 1Maximum switching voltage , V 24Maximum switching current, A 0,1Pull in , AT 7-35Drop out, AT min. 4Contact resistance, Ohm max. 0,2Breakdown voltage, V dc min. 150Insulation resistance, Ohm min. 1·109

Operate time, ms max. 0,3Release time, ms max. 0,1Capacitance, pF max. 0,4Resonant frequency, Hz min. 12000Operate temperature range, º C -60 +125High humidity at T=35º C, % max. 98Operation frequency, Hz max. 400Test coil:Number of turnsResistance, Ohm

5000580

UL file# E229065

�

Coil energized 1.5 times each stated max. operate value.Customized switches are available upon request:

- with close PI values;- with cut, bent, flat leads;

Life expectancy and reliabilityTest modes:50mV-10mA-5x107 operations min. at operation frequency of 100 Hz with failure rate 6,7x10 –10 oper -1. min., confidence level of 60%.5V-10mA-2x107 operations min. at operation frequency of 100 Hz with failure rate 1,7x10 –9 oper -1. min., confidence level of 60%. ShockReed switches are immune to mechanical shocks with peak shock acceleration of 150 g and impulse duration of 1 ms.VibrationReed switches are immune to sinusoidal vibration at 1-500 Hz and acceleration amplitude of 10 g.

�

0.1

1

510

203040

20 4 6 8

50607080

90

95

99

99.9

(5) Lead tensile strength

0.1

1

510

203040

12020

0

10

20

30

40

50

30 40 50 ÀT

AT

140 160 200

50607080

90

95

99

99.9

0.1

1

510

20304050607080

90

95

99

99.9

(1) Drop-out vs. Pull-in.

(3) Breakdown voltage

(2) Contact resistance

(4) Insulation resistance

0

200

300

400

30 40 50

10 10 10 10 109 10 11 12 13

ELECTRICAL CHARACTERISTICS

10

10

20

180

MKA-07101

100

AT

DC:V

DC100V

Pull-in.

Pull-in.

Contact resistance

Insulation resistance

Kg

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MECHANICAL CHARACTERISTICS

Breaking load



Operate time, ms max. 0,5Release time, ms max. 0,3Capacitance, pF max. 0,5Resonant frequency, Hz min. 5000Operate temperature range, º C -60 +125High humidity at T=35º C, % max. 98Operation frequency, Hz. max. 400Test coil:Number of turnsResistance, Ohm

5000580

UL file# E229065

Customized switches are available upon request:

�


Life expectancy and reliabilityTest modes:24V-250mA-1x105 operations min. at operation frequency of 50 Hz with failure rate 3,3x10 –7 oper -1. min., confidence level of 60%.5V-10mA-5x106 operations min. at operation frequency of 100 Hz with failure rate 6,7x10 –9 oper -1. min., confidence level of 60%.50mV-5•A-5x106 operations min. at of 100 Hz with failure rate 6,7x10 –9 oper -1. min., confidence level of 60%.These data are valid for a coil energized at 1.5 times stated max. operate value.ShockReed switches are immune to mechanical shocks with peak shock acceleration of 150 g and impulse duration of 1 ms.VibrationReed switches are immune to sinusoidal vibration at 1-2000 Hz and acceleration amplitude of 10 g.

0.1

1

510

203040

100

10

20

30

40

50

20 30 40 50 AT

AT

60 80 100 �

50607080

90

95

99

99.9

Contact resistancePull-in

(1) Drop-out vs. Pull-in(2) Contact resistance

Cum

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frequency

perc

ent

Dro

p-o

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120

0.1

1

510

20304050607080

90

95

99

99.9


10 10 10 1010 11 12 13 �

(DC 100V)


Cu

mu

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fre

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109


100

100

200

300

400

500

20 30 40 50 AT

DC : V

Pull-in

Bre

akdow

nvoltage


40

MKA-10109

0.1

1

510

203040

20 4 6 8 kg

50607080

90

95

99

99.9

Breaking load


Cum

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frequency

perc

ent



Contact form 1AContact material RuMaximum switching power , W 10Maximum switching voltage , V 100Maximum switching current, A 0,5Pull in , AT 10-35Drop out, AT min. 5Contact resistance, Ohm max. 0,1Breakdown voltage, V dc min. 220 AT≤25

250 AT>25Insulation resistance, Ohm min. 1·1010


5000870

UL file# E229065



Life expectancy and reliabilityTest modes:5V-10mA-1x108 operations min. at operation frequency of 100 Hz with failure rate 3,3x10 –10 oper -1. min., confidence level of 60%.24V-400mA-1x105 operations min. at operation frequency of 50 Hz with failure rate 3,3x10 –7 oper -1. min., confidence level of 60%.These data are valid for a coil energized at 1.5 times stated max. operate value.ShockReed switches are immune to mechanical shocks with peak shock acceleration of 150 g and impulse duration of 1 ms.VibrationReed switches are immune to sinusoidal vibration at 1-2000 Hz and acceleration amplitude of 20 g.

0.1

1

510

203040

20 4 6 8 kg

50607080

90

95

99

99.9

Breaking load


Cum

ula

tive

frequency

perc

ent


0.1

1

510

203040

4020

0

10

20

30

40

50

30 40 50 AT

AT

60 80 100 m �

50607080

90

95

99

99.9

0.1

1

510

20304050607080

90

95

99

99.9


(1) Drop-out vs. Pull-in




Cum

ula

tive

frequency

perc

ent

Dro

p-o

ut

0

200

300

400

100

30 40 50 AT

DC : V

Pull-in

Bre

akdow

nvoltage

10 10 10 10 109 10 11 12 13 �

(DC 100V)


Cum

ula

tive

frequency

perc

ent


10

10

20

MKA-14103


Contact form 1AContact material RuMaximum switching power , W 5 (lamp load)

10 (resistive load)Maximum switching voltage , V 100Maximum switching current, A 0,5Pull in , AT 10-35Drop out, AT min. 5Contact resistance, Ohm max. 0,1Breakdown voltage, V dc min. 220Insulation resistance, Ohm min. 1·109


5000620

UL file# E229065

sva

Customized switches are available upon request:- with close PI values;- with cut, bent, flat leads;

Life expectancy and reliabilityTest modes:24V-250mA-1x106 operations min. at operation frequency of 100 Hz with failure rate 3,3x10 –8 oper -1. min., confidence level of 60%.5V-10mA-2x106 operations min. at operation frequency of 100 Hz with failure rate 1,7x10 –8 oper -1. min., confidence level of 60%.50mV-5•A-1x108 operations min. at operation frequency of 100 Hz with failure rate 3,3x10 –10 oper -1. min., confidence level of 60%.14,5V-270 mA (lamp load) -1x105 operations min. at operation frequency of 1 Hz with failure rate 3,3x10 –7 oper -1. min., confidence level of 60%.These data are valid for a coil energized at 1.5 times stated max. operate value.ShockReed switches are immune to mechanical shocks with peak shock acceleration of 150 g and impulse duration of 1 ms.VibrationReed switches are immune to sinusoidal vibration at 1-2000 Hz and acceleration amplitude of 10 g.

�

0.1

1

510

203040

4020

0

10

20

30

40

50

30 40 50 AT

AT

60 80 100 m �

50607080

90

95

99

99.9

0.1

1

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20304050607080

90

95

99

99.9






Cum

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Dro

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0

200

300

400

100

30 40 50 AT

DC : V

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10 10 10 10 109 10 11 12 13

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(DC 100V)


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0.1

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20 4 6 8 kg

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99

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10

10

20

MKA-16101

Specifications for KAM-2



5000550

UL file# E229065


Life expectancy and reliabilityTest modes:24V-250mA-1x106 operations min. at operation frequency of 100 Hz with failure rate 3,3x10 –8oper -1. min., confidence level of 60%.5V-10mA-3x106 operations min. at operation frequency of 100 Hz with failure rate 1,1x10 –8 oper -1. min., confidence level of 60%.These data are valid for a coil energized at 1.5 times stated max. operate value.ShockReed switches are immune to mechanical shocks with peak shock acceleration of 150 g and impulse duration of 1 ms.VibrationReed switches are immune to sinusoidal vibration at 1-600 Hz and acceleration amplitude of 10 g.

0.1

1

510

203040

5040

0

10

20

30

40

50

60 80 100 AT

AT

100 150 200 m �

50607080

90

95

99

99.9

0.1

1

510

20304050607080

90

95

99

99.9






Cum

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frequency

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ent

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0

200

300

400

100

AT

DC : V

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Bre

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10 10 10 1010 11 12 13 �

(DC 100V)


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ula

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frequency

perc

ent

0.1

1

510

203040

20 4 6 8 kg

50607080

90

95

99

99.9

Breaking load


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frequency

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ent



20

20

KAM-2

40 60 80 100

109


Contact form 1AContact material RuMaximum switching power , W 10Maximum switching voltage , V 180Maximum switching current, A 0,5Pull in , AT 10-40Drop out, AT min. 4Contact resistance, Ohm max. 0,15Breakdown voltage, V dc min. 220 (AT≤20)

280 (AT>20)Insulation resistance, Ohm min. 1·109

Operate time ,ms max. 1,0Release time, ms max. 0,3Capacitance, pF max. 0,4Resonant frequency, Hz min. 2600Operate temperature range, º C -60 +125High humidity at T=35º C, % max. 98Operation frequency, Hz max. 100Test coil:Number of turnsResistance, Ohm

5000550

UL file # E229065

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0.1

1

510

203040

5010

0

5

10

15

20

25

20 30 40 50 AT

AT

100 150 200 m �

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90

95

99

99.9

0.1

1

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20304050607080

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95

99

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100

100

200

300

400

20 30 40 50 AT

DC : V

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(DC 100V)C

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frequency

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0.1

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99

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500

MKA-20101

10 10 10 1010 11 12 13


109


Contact form 1AContact material MoMaximum switching power , W 120Maximum switching voltage , V 250Maximum switching current, A 3,0Pull in , AT 50-90Drop out, AT min. 20Contact resistance, Ohm max. 0,15Breakdown voltage, V dc min. 700Insulation resistance, Ohm min. 1·109

Operate time, ms max. 2,0Release time, ms max. 1Capacitance, pF max. 1Resonant frequency, Hz min. 700Operate temperature range, º C -60 +100High humidity at T=35º C, % max. 98Operation frequency, Hz max. 25Test coil:Number of turnsResistance, Ohm

5000335

UL file# E229065



Life expectancy and reliabilityTest modes:24V-0,25A-1x106 operations min. at operation frequency of 25 Hz with failure rate 3,3x10 –8 oper -1. min., confidence level of 60%.220V-0,55A-1x104 operations min. at operation frequency of 10 Hz with failure rate 3,3x10 –6 oper -1. min., confidence level of 60%.These data are valid for a coil energized at 1.5 times stated max. operate value.ShockReed switches are immune to mechanical shocks with peak shock acceleration of 150 g and impulse duration of 2 ms.VibrationReed switches are immune to sinusoidal vibration at 1-500 Hz and acceleration amplitude of 10 g.

0.1

1

510

203040

4040

0

60

20

30

40

50

60 80 100 ,

AT

80 120 160

50607080

90

95

99

99.9

0.1

1

510

20304050607080

90

95

99

99.9





0

600

800

1000

400

60 80 100AT

DC:V

10 10 10 10 1010 11 12 14 15

0.1

1

510

203040

100 20 30 40 Êg

50607080

90

95

99

99.9




20

20

40

MKA-50201

200

(DC100V)

ATPull-in

Breaking load

Pull-in


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Contact resistance�m

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Contact form 1AContact material MoMaximum switching power , W 250Maximum switching voltage , V 250Maximum switching current, A 5Pull in , AT 50-100Drop out, AT min. 20Contact resistance, Ohm max. 0,15Breakdown voltage, V dc min. 700Insulation resistance, Ohm min. 1·109

Operate time, ms max. 2,0Release time, ms max. 1Capacitance, pF max. 1Resonant frequency, Hz min. 700Operate temperature range, º C -60 +100High humidity at T=35º C, % max. 98Operation frequency, Hz max. 5Test coil:Number of turnsResistance, Ohm

5000335

UL file# E229065


Life expectancy and reliabilityTest modes:250V-1A-1x105 operations min. at operation frequency of 5 Hz with failure rate 3,3x10 –7 oper -1. min., confidence level of 60%.These data are valid for a coil energized at 1.5 times stated max. operate value.ShockReed switches are immune to mechanical shocks with peak shock acceleration of 150 g and impulse duration of 2 ms.VibrationReed switches are immune to sinusoidal vibration at 1-500 Hz and acceleration amplitude of 10 g.

0.1

1

510

203040

4040

0

60

20

30

40

50

60 80 100 AT

AT

80 120 160 m �

50607080

90

95

99

99.9

0.1

1

510

20304050607080

90

95

99

99.9






Cum

ula

tive

frequency

perc

ent

Dro

p-o

ut

0

600

800

1000

400

60 80 100 AT

DC : V

Pull-in

Bre

akdow

nvoltage

10 10 10 10 1010 11 12 14 15 �

(DC 100V)


Cum

ula

tive

frequency

perc

ent

0.1

1

510

203040

100 20 30 40 kg

50607080

90

95

99

99.9

Breaking load


Cum

ula

tive

frequency

perc

ent



20

20

40

MKA-50202

200

Specifications for KAM-3

Contact form 1CContact position, mm 11,0Contact material RuMaximum switching power , W 30Maximum switching voltage , V 125Maximum switching current, A 1,0Pull in , AT 30-80Drop out, AT min. 10Contact resistance, Ohm max. 0,15Breakdown voltage, V dc min. 180 AT≤55

280 AT>55Insulation resistance NC/NO, Ohm min. 2·108/1•109

Operate time, ms max. 1,5Release time, ms max. 2,0Capacitance NC/NO, pF max. 2,5/0,5Resonant frequency, Hz min. 3000Operate temperature range, º C -60 +100High humidity at T=35º C, % max. 98Operation frequency, Hz max. 50Test coil:Number of turnsResistance, Ohm

5000455

UL file# E229065

0.1

1

510

203040

4040

0

10

20

30

40

50

50 60 70 AT

AT

60 80 100 m �

50607080

90

95

99

99.9

0.1

1

510

20304050607080

90

95

99

99.9






Cum

ula

tive

frequency

perc

ent

Dro

p-o

ut

0

200

300

400

500

30 40 50 AT

DC : V

Pull-in

Bre

akdow

nvoltage

10 10 10 10 1010 11 12 14 15 �

(DC 100V)


Cum

ula

tive

frequency

perc

ent

0.1

1

510

203040

105 15 20 25 kg

50607080

90

95

99

99.9

Breaking load


Cum

ula

tive

frequency

perc

ent



7060

30

20

ÊAÌ 3-

NC NO

Specifications for MKC-27103

Contact form 1CContact position, mm 17,0Contact material RuMaximum switching power , W 30Maximum switching voltage , V 200Maximum switching current, A 1,0Pull in , AT 45-90Drop out, AT min. 16Contact resistance, Ohm max. 0,15Breakdown voltage, V dc min. 350Insulation resistance NC/NO, Ohm min. 5·108/1•109

Operate time, ms max. 1,5Release time, ms max. 2,5Capacitance NC/NO, pF max. 2,0/1,0Resonant frequency, Hz min. 2200Operate temperature range, º C -60 +100High humidity at T=35º C, % max. 98Operation frequency, Hz max. 50Test coil:Number of turnsResistance, Ohm

5000450

UL file# E229065

�

0.1

1

510

203040

4040

0

10

20

30

40

50

50 60 70 AT

AT

60 80 100 m �

50607080

90

95

99

99.9

0.1

1

510

20304050607080

90

95

99

99.9






Cum

ula

tive

frequency

perc

ent

Dro

p-o

ut

0

200

300

400

500

30 40 50 AT

DC : V

Pull-in

Bre

akdow

nvoltage

10 10 10 10 109 10 11 12 13 �

(DC 100V)


Cum

ula

tive

frequency

perc

ent

0.1

1

510

203040

2015 25 30 35 kg

50607080

90

95

99

99.9

Breaking load


Cum

ula

tive

frequency

perc

ent



7060

80

80

MKC-27103

NO NC

reed switches catalog - hte · the hold value is the lower limit of the applied magnetic field at...

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