Circuit Breakers – Mouser United Kingdom

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5SY4 Miniature Circuit Breakers

Siemens 5SY4 Miniature Circuit Breakers provide safe short-circuit and overload protection for industrial applications. Siemens 5SY Miniature Circuit Breakers are available in 1-, 2-, 3-, 4-, 1+N, and 3+N-pole versions and are designed for rated currents from 0.3A to 80A at rated switching capacities of 6kA, 10kA, and 15kA. 5SY4 protects circuits of air-conditioning and ventilation systems, control cabinets, and controllers from the consequences of short-circuit and overload events.

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Part #

Circuit Breakers SUP PTOR 5SY4 3P 480V 25A 5K D-TRIP

5SY43258
Siemens
1: £148.24
5In Stock

Mfr. Part No.
5SY43258

Mouser Part No
982-5SY43258

Siemens

Circuit Breakers SUP PTOR 5SY4 3P 480V 25A 5K D-TRIP

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Datasheet

5In Stock

£148.24

£129.83

£113.11

£96.27

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

25 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 3P 480V 30A 5K C-TRIP

5SY43307
Siemens
1: £148.24
5In Stock

Mfr. Part No.
5SY43307

Mouser Part No
982-5SY43307

Siemens

Circuit Breakers SUP PTOR 5SY4 3P 480V 30A 5K C-TRIP

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Datasheet

5In Stock

£148.24

£129.83

£113.11

£96.27

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

30 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 3P 480V 32A 5K C-TRIP

5SY43327
Siemens
1: £138.06
10In Stock

Mfr. Part No.
5SY43327

Mouser Part No
982-5SY43327

Siemens

Circuit Breakers SUP PTOR 5SY4 3P 480V 32A 5K C-TRIP

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Datasheet

10In Stock

£138.06

£129.64

£124.17

£115.04

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

32 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 3P 480V 35A 5K C-TRIP

5SY43357
Siemens
1: £121.86
1In Stock
2Expected 21/08/2026

Mfr. Part No.
5SY43357

Mouser Part No
982-5SY43357

Siemens

Circuit Breakers SUP PTOR 5SY4 3P 480V 35A 5K C-TRIP

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Datasheet

1In Stock

2Expected 21/08/2026

£121.86

£119.29

£110.64

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

35 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 3P 480V 40A 5K C-TRIP

5SY43407
Siemens
1: £149.89
3In Stock
2Expected 10/08/2026

Mfr. Part No.
5SY43407

Mouser Part No
982-5SY43407

Siemens

Circuit Breakers SUP PTOR 5SY4 3P 480V 40A 5K C-TRIP

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Datasheet

3In Stock

2Expected 10/08/2026

£149.89

£126.35

£116.48

£96.26

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

40 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 3P 480V 40A 5K D-TRIP

5SY43408
Siemens
1: £149.89
4In Stock

Mfr. Part No.
5SY43408

Mouser Part No
982-5SY43408

Siemens

Circuit Breakers SUP PTOR 5SY4 3P 480V 40A 5K D-TRIP

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Datasheet

4In Stock

£149.89

£126.33

£116.47

£95.77

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

40 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 3P 480V 50A 5K D-TRIP

5SY43508
Siemens
1: £172.83
5In Stock

Mfr. Part No.
5SY43508

Mouser Part No
982-5SY43508

Siemens

Circuit Breakers SUP PTOR 5SY4 3P 480V 50A 5K D-TRIP

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Datasheet

5In Stock

£172.83

£145.97

£131.92

£112.76

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

50 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 3P 480V 63A 5K D-TRIP

5SY43638
Siemens
1: £177.21
3In Stock

Mfr. Part No.
5SY43638

Mouser Part No
982-5SY43638

Siemens

Circuit Breakers SUP PTOR 5SY4 3P 480V 63A 5K D-TRIP

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Datasheet

3In Stock

£177.21

£147.41

£135.32

£110.94

Quote

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

63 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 4P 480V 10A 5K C-TRIP

5SY44107
Siemens
1: £188.31
1In Stock

Mfr. Part No.
5SY44107

Mouser Part No
982-5SY44107

Siemens

Circuit Breakers SUP PTOR 5SY4 4P 480V 10A 5K C-TRIP

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Datasheet

1In Stock

£188.31

£164.50

£155.48

£147.42

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

10 A

400 VAC

60 VDC

4 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 4P 480V 16A 5K C-TRIP

5SY44167
Siemens
1: £201.99
2In Stock

Mfr. Part No.
5SY44167

Mouser Part No
982-5SY44167

Siemens

Circuit Breakers SUP PTOR 5SY4 4P 480V 16A 5K C-TRIP

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Datasheet

2In Stock

£201.99

£164.50

£155.48

£147.42

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

16 A

400 VAC

60 VDC

4 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P+N 240V 6A 7.5K C-TRIP

5SY45067
Siemens
1: £92.49
4In Stock

Mfr. Part No.
5SY45067

Mouser Part No
982-5SY45067

Siemens

Circuit Breakers SUP PTOR 5SY4 1P+N 240V 6A 7.5K C-TRIP

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Datasheet

4In Stock

£92.49

£77.61

£72.30

£58.45

£55.04

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

6 A

230 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P+N 240V 6A 7.5K D-TRIP

5SY45068
Siemens
1: £90.42
5In Stock

Mfr. Part No.
5SY45068

Mouser Part No
982-5SY45068

Siemens

Circuit Breakers SUP PTOR 5SY4 1P+N 240V 6A 7.5K D-TRIP

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Datasheet

5In Stock

£90.42

£76.81

£74.28

£69.67

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

6 A

230 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P+N 240V 10A 7.5K C-TRI

5SY45107
Siemens
1: £90.42
4In Stock

Mfr. Part No.
5SY45107

Mouser Part No
982-5SY45107

Siemens

Circuit Breakers SUP PTOR 5SY4 1P+N 240V 10A 7.5K C-TRI

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Datasheet

4In Stock

£90.42

£76.81

£74.80

£69.26

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

10 A

230 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers MSP 1P+N 240V 16A 7.5K C-TRIP

5SY45167
Siemens
1: £96.45
4In Stock

Mfr. Part No.
5SY45167

Mouser Part No
982-5SY45167

Siemens

Circuit Breakers MSP 1P+N 240V 16A 7.5K C-TRIP

Learn More

Datasheet

4In Stock

£96.45

£76.81

£74.80

£69.26

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

16 A

230 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P+N 240V 20A 7.5K C-TRIP

5SY45207
Siemens
1: £90.42
2In Stock

Mfr. Part No.
5SY45207

Mouser Part No
982-5SY45207

Siemens

Circuit Breakers SUP PTOR 5SY4 1P+N 240V 20A 7.5K C-TRIP

Learn More

Datasheet

2In Stock

£90.42

£78.04

£74.80

£69.26

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

20 A

230 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 3P+N 480V 16A 5K C-TRIP

5SY46167
Siemens
1: £201.38
2In Stock

Mfr. Part No.
5SY46167

Mouser Part No
982-5SY46167

Siemens

Circuit Breakers SUP PTOR 5SY4 3P+N 480V 16A 5K C-TRIP

Learn More

Datasheet

2In Stock

£201.38

£163.98

£154.98

£146.95

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

16 A

400 VAC

60 VDC

4 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 2P 480V 3A 5K D-TRIP

5SY42038
Siemens
1: £104.01
5Expected 10/08/2026

Mfr. Part No.
5SY42038

Mouser Part No
982-5SY42038

Siemens

Circuit Breakers SUP PTOR 5SY4 2P 480V 3A 5K D-TRIP

Learn More

Datasheet

5Expected 10/08/2026

£104.01

£87.20

£80.82

£64.96

£62.11

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

3 A

400 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 2P 480V 40A 5K C-TRIP

5SY42407
Siemens
1: £103.28
5Expected 24/09/2026

Mfr. Part No.
5SY42407

Mouser Part No
982-5SY42407

Siemens

Circuit Breakers SUP PTOR 5SY4 2P 480V 40A 5K C-TRIP

Learn More

Datasheet

5Expected 24/09/2026

£103.28

£83.23

£78.33

£66.84

£62.11

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

40 A

400 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P 240V 1A 7.5K A-TRIP

5SY41015
Siemens
1: £50.78
Non-Stocked Lead-Time 6 Weeks

Mfr. Part No.
5SY41015

Mouser Part No
982-5SY41015

Siemens

Circuit Breakers SUP PTOR 5SY4 1P 240V 1A 7.5K A-TRIP

Learn More

Datasheet

Non-Stocked Lead-Time 6 Weeks

£50.78

£46.40

£44.65

£41.42

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

1 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P 240V 3A 7.5K A-TRIP

5SY41035
Siemens
1: £50.78
Non-Stocked Lead-Time 4 Weeks

Mfr. Part No.
5SY41035

Mouser Part No
982-5SY41035

Siemens

Circuit Breakers SUP PTOR 5SY4 1P 240V 3A 7.5K A-TRIP

Learn More

Datasheet

Non-Stocked Lead-Time 4 Weeks

£50.78

£46.40

£44.65

£41.42

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

3 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P 240V 3A 7.5K D-TRIP

5SY41038
Siemens
1: £65.62
Non-Stocked Lead-Time 4 Weeks

Mfr. Part No.
5SY41038

Mouser Part No
982-5SY41038

Siemens

Circuit Breakers SUP PTOR 5SY4 1P 240V 3A 7.5K D-TRIP

Learn More

Datasheet

Non-Stocked Lead-Time 4 Weeks

£65.62

£54.83

£45.90

£40.51

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

3 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P 240V 4A 7.5K A-TRIP

5SY41045
Siemens
1: £56.45
Non-Stocked Lead-Time 4 Weeks

Mfr. Part No.
5SY41045

Mouser Part No
982-5SY41045

Siemens

Circuit Breakers SUP PTOR 5SY4 1P 240V 4A 7.5K A-TRIP

Learn More

Datasheet

Non-Stocked Lead-Time 4 Weeks

£56.45

£49.00

£47.53

£45.20

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

4 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P 240V 4A 7.5K B-TRIP

5SY41046
Siemens
1: £50.78
Non-Stocked Lead-Time 6 Weeks

Mfr. Part No.
5SY41046

Mouser Part No
982-5SY41046

Siemens

Circuit Breakers SUP PTOR 5SY4 1P 240V 4A 7.5K B-TRIP

Learn More

Datasheet

Non-Stocked Lead-Time 6 Weeks

£50.78

£46.40

£44.65

£41.42

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

4 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P 240V 4A 7.5K D-TRIP

5SY41048
Siemens
1: £64.45
Non-Stocked Lead-Time 4 Weeks

Mfr. Part No.
5SY41048

Mouser Part No
982-5SY41048

Siemens

Circuit Breakers SUP PTOR 5SY4 1P 240V 4A 7.5K D-TRIP

Learn More

Datasheet

Non-Stocked Lead-Time 4 Weeks

£64.45

£54.79

£48.06

£41.53

£38.54

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

4 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P 240V 0.5A 7.5K D-TRIP

5SY41058
Siemens
1: £60.15
Non-Stocked Lead-Time 6 Weeks

Mfr. Part No.
5SY41058

Mouser Part No
982-5SY41058

Siemens

Circuit Breakers SUP PTOR 5SY4 1P 240V 0.5A 7.5K D-TRIP

Learn More

Datasheet

Non-Stocked Lead-Time 6 Weeks

£60.15

£56.28

£53.44

£50.66

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

500 mA

400 VAC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

5SY4 Miniature Circuit Breakers

Customer Service Office

Company

Resources

Support

300 mA
500 mA
1 A
1.6 A
2 A
2.5 A
3 A
4 A
5 A
6 A
8 A
10 A
13 A
15 A
16 A
20 A
25 A
30 A
32 A
35 A