miniature circuit breakers for railway applications - siemens · miniature circuit breakers for...

Miniature Circuit Breakersfor Railway Applications

BETA Low-Voltage Circuit Protection

The miniature circuit breakers are used in fixed railway systems and rolling stock for protecting system components against overcurrent and short circuits. The devices can be used as main control switches for disconnecting or isolating plants.

Ideal for railway applicationsThe devices have an operating tempera-ture range from -40 °C to +70 °C and have been certified for power supplies up to 250/440 V AC or 220/440 V DC. In addition, the devices meet the require-ments for fire behavior according to prCEN/TS 45545-2 as well as the more stringent requirements governing vibration and shock behavior for railway operation according to EN 61373 and EN 50155 "1B".

Complies with fire protection require-ments according to prCEN/TS 45545-2

Vibration and shock-resistant according to EN 61373 and EN 50155 "1B"

Can be used in temperatures ranging from -40 °C to +70 °C

Highlights

Answers for infrastructure.

© Siemens AG 2010

Miniature Circuit Breakers2

Benefits

• Optional top or bottom infeed as the terminals are identical• Clear and visible conductor connection in front of the busbar

facilitates controls• Large and easily accessible wiring space enables easy

insertion of conductor in the terminal.

• Integrated movable terminal covers located at the cable entries ensure the terminals are fully insulated when the screws are tightened

• The effective touch protection when grasping the device considerably exceeds the requirements of VBG 4/BGV A3.

• Manual snap-on fixing and release systems that require no tools enable fast assembly and disassembly of MCBs

• Marked labeling field on all modular installation devices for uniform, quick and easy identification.

• Quick and easy manual removal of MCBs from the busbar assembly if e. g. connections need to be changed

• Time-saving replacement of parts as busbars no longer need to be freed from adjacent devices.

Miniature Circuit Breakers5SY4 and 5SY5 miniature circuit breakers

© Siemens AG 2010

Miniature Circuit Breakers 3

Technical specifications

1) The operational voltage 60 V DC/pole takes into account a battery charging voltage with a peak value of 72 V.

2) Ensure compliance with the specified polarity when connecting DC.3) Taking into consideration the correction factors according to the table on

page 7. No condensation is permitted when using in ambient temperatures below 0°C.

5SY4 5SY5

Standards EN 60898-1; EN 60947-2 EN 60898-2prCEN/TS 45545-2; EN 61373

Operational voltage V AC 230/400 230/400V DC -- 220/440/880

Min. V AC/DC 24 24

Acc. to EN 60898-1/-2 and EN 60947-2 Max. V DC/pole 601) 250Max. V AC 250/440 250/440

Acc. to UL 1077 and CSA C22.2 No.235 Max. V AC 480Y/277 --V DC/pole 60 --

Rated switching capacity

• Icn acc. to IEC/EN 60898-1 kA AC 10 10

• Icn acc. to IEC/EN 60898-2 kA DC -- 10

• Icu acc. to IEC/EN 60947-2 kA AC -- --kA DC -- 15

• Acc. to UL 1077 and CSA C22.2 No.235 kA AC 5 --

Insulation coordination

• Rated insulation voltage V AC 250/440V DC/pole -- 250

Degree of pollution for overvoltage category 3/III

Touch protection acc. to EN 50274 Yes

Main switch characteristics acc. to EN 60204 Yes

Handle end position, sealable Yes

Degree of protection acc. to EN 60529 IP20, with connected conductors

CFC and silicone-free Yes

Mounting

• Snap-on fixing system Yes

Terminals

• Combined terminals at both ends Yes

• Terminal tightening torque Nm 2.5 ... 3Ib.in 22 ... 26

Conductor cross-sections

• Solid and stranded mm2 0.75 ... 35

• Finely stranded, with end sleeve mm2 0.75 ... 25

• AWG cables AWG 14 ... 4

Mains connection

• AC Any

• DC Any 2)

Mounting position Any

Service life Actuations 20 000On average, with rated load Actuations -- 10 000 at 40 A, 50 A and 63 A

Ambient temperature °C -40 ... +70, max. 95 % humidity3)

Storage temperature °C -40 ... +75

Resistance to climate acc. to IEC 60068-2-30 6 cycles

Shock acc. to IEC 60068-2-27 m/s2 150 at 11 ms half-sine

Resistance to vibrations

• Acc. to IEC 60068-2-6 m/s2 50 at 25 Hz ... 150 Hz and 60 at 35 Hz (4 sec)

• Acc. to EN 61373 Category 1, Class B

© Siemens AG 2010


Selection and ordering data (Dated 10/2010)

Characteristic B Characteristic C

In Moun-ting width

DT Order No. PG DT Order No. PU(UNIT,

SET, M)

PS*/P. unit

PG Weightper PU

approx.

A MW1) kg

MCBs 10 000 A

1P, 230/400 V AC

0.3 1 -- C 5SY4 114-7KK11 1 1 unit 005 0.1650.5 -- C 5SY4 105-7KK11 1 1 unit 005 0.1651 -- C 5SY4 101-7KK11 1 1 unit 005 0.165

1.6 -- C 5SY4 115-7KK11 1 1 unit 005 0.1652 -- C 5SY4 102-7KK11 1 1 unit 005 0.1653 -- C 5SY4 103-7KK11 1 1 unit 005 0.165

4 -- C 5SY4 104-7KK11 1 1 unit 005 0.1656 C 5SY4 106-6KK11 005 C 5SY4 106-7KK11 1 1 unit 005 0.1658 -- C 5SY4 108-7KK11 1 1 unit 005 0.165

10 C 5SY4 110-6KK11 005 C 5SY4 110-7KK11 1 1 unit 005 0.16513 C 5SY4 113-6KK11 005 C 5SY4 113-7KK11 1 1 unit 005 0.16516 C 5SY4 116-6KK11 005 C 5SY4 116-7KK11 1 1 unit 005 0.165



2P, 400 V AC







3P, 400 V AC







10 0003

© Siemens AG 2010


1) 1 MW (modular width) = 18 mm.

* You can order this quantity or a multiple thereof.

Characteristic B Characteristic C

In Moun-ting width

DT Order No. PG DT Order No. PU(UNIT,

SET, M)

PS*/P. unit

PG Weightper PU

approx.

A MW1) kg

4P, 400 V AC







MCBs 10 000 A, universal current

1P, 230/400 V AC,220 V DC







2P, 400 V AC,440 V DC







10 0003

© Siemens AG 2010


Characteristic curves

Tripping characteristics acc. to IEC/EN 60898-1, DIN VDE 0641-11 (AC)

Tripping characteristic B

MCBs with this tripping characteristic are designed for universal use in socket outlet and lighting circuits. Proof of personal safety acc. to DIN VDE 0100-410 is not required.

Tripping characteristic C

In lamp and motor circuits with higher starting currents, MCBs with tripping characteristic C are generally used.

Dimensional drawings

Schematics

Symbols

30

I2_13653

201510865432

124

10

2040

21

4

102040

6

60

120

1

6

Multiple of rated current

Trip

ping

tim

eM

inut

esS

econ

ds

1.5

1.451.13

0.01

0.020.04

0.10.2

0.4

0.06

0.6

30

I2_13652

201510865432

124

10

2040

21

4

102040

6

60

120

1

6

Multiple of rated current

Trip

ping

tim

eM

inut

esS

econ

ds1.5

1.451.13

0.01

0.020.04

0.10.2

0.4

0.06

0.6

5SY

1P 2P 3P 4P

I202

_014

23

45 90

4470

672

7

8

5

6

3

4

1

2

54

5

6

3

4

1

2

36

3

4

1

2

18

1

2

5SY4

1P 2P 3P 4P

5SY5

1P 2P

�

�

�

�

�

� �

�

�

�

�

� �

�

�

�

�

�

�

�

�

�

�

�

�

�

�

�

�

© Siemens AG 2010


Configuration

Correction factors for rated current at different ambient temperatures

Dependence of permissible continuous load current on ambient temperature.

For the curve of the respective correction factor, please refer to the following table.

Curve for correction factor (for curves, please refer to the top diagram)

Correction factors for rated current if bundling

If more than one electrical circuit is loaded in a series of minia-ture circuit breakers, the resulting increase in ambient tempera-ture affects the characteristic curve. In this case, you need to in-clude an additional correction factor, which is specific to the rated current of the MCB(s).

Correction factors for rated current at different frequencies

The tripping characteristic applies to a frequency of 50 to 60 Hz. In the case of other frequencies, the following correction factors must be taken into account. In the overrange, the limits of the characteristic curves corre-spond to the correction factors of the thermal tripping operation. In the case of a short circuit, the limits of the characteristic curves correspond to the correction factors of the magnetic trip-ping operation. In case of direct voltage, the maximum current values correspond to the frequency of 0 Hz.

Thermal tripping operation

Magnetic tripping operation

Ambient Temperature/ °C

Red

uctio

n Fa

ctor

Curve 3

Curve 2

Curve 1

706050403020100-10-20-30-40

1,4

1,3

1,2

1,1

1

0,9

0,8

0,7

I202

_ 14

43

Rated current (A) 0,3 0,5 1 1,6 2 3 4 6 8 10 13 16 20 25 32 40 50 63

Characteristic Poletype

Applicable curve for correction factor

B 1P/2P -- -- -- -- -- -- -- 3 -- 3 2 2 3 3 2 3 2 3

3P/4P -- -- -- -- -- -- -- 2 -- 2 1 2 2 1 1 1 1 1

C 1P/2P 3 3 2 2 2 3 3 3 3 3 2 3 3 2 2 3 2 3

3P/4P 2 2 2 1 2 2 2 2 3 3 2 2 2 2 1 1 1 2

Number of MCBs 1 2 ... 3 4 ... 6 > 7

Correction factor K 1.00 0.90 0.88 0.85

Rated current In (A) Correction factor for

0 Hz 16 2/3 Hz 50 Hz 125 Hz 400 Hz 1000 Hz

0,3 ... 10 1 1 1 1 0.99 0.97

1 ... 40 1 1 1 0.98 0.97 0.93

50 ... 63 1 1 1 0.98 0.94 0.86

Rated current In (A) Correction factor for

0 Hz 16 2/3 Hz 50 Hz 125 Hz 400 Hz 1000 Hz

0,3 ... 63 1.4 1 1 1.2 1.4 1.7

© Siemens AG 2010


Let-through I2t values 5SY4 (AC)Characteristic B Characteristic C

Let-through I2t values 5SY5 (DC)Characteristic B Characteristic C

2

2

46

1

010

-1286421808642-1

I2_1

0765

a

10

22

10

[kA

s]

[kA]

10

10

2

46

10

2

46

p1064210

80 A

10 A13/16/20 A25/32/40 A

6 A

50/63 A

-2 286428 10108642-110864210 1010642

64

2

64

2

64

2

210

110

010

-110

-210

64

2

I2_1

0766

a

[kA]p2

2[k

A s

]

0,3 A

0,5 A

1,6 A2 A3/4 A6 A8/10 A13/16 A

1 A

50/63 A80 A 20/25/32/40 A

20/

A

[kA]

[k

� � �

��

�

��

� � �

� � � � �

� � �

� � �

� � � �

� � � �

� � � � ��

� � � �

�

�

�

� � � �

�

�

�

� � �

�

�

�

� � �

�

�

�

� � �

� � � � � � � �

� � ��

© Siemens AG 2010

Siemens AGIndustry SectorBuilding Technologies DivisionPostfach 10 09 5393009 REGENSBURGGERMANY

www.siemens.com/beta

The information provided in this brochure contains descriptions or characteristics of perfor-mance which in case of actual use do not always apply as described or which may change asa result of further development of the products. An obligation to provide the respective char-acteristics shall only exist if expressly agreed in the terms of contract. Availability and techni-cal specifications are subject to change without notice.All product designations may be registered trademarks or product names of Siemens AG orsupplier companies whose use by third parties for their own purposes may violate the rightsof the owner.

© Siemens AG 2010 • PDF only: (E10003-E38-10T-G2163-7600) • PI 1010 En

© Siemens AG 2010

miniature circuit breakers for railway applications - siemens · miniature circuit breakers for...

Documents