Circuit Breakers – Mouser South Africa

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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 2P 480V 10A 5K B-TRIP

5SY42106
Siemens
1: $134.31
3In Stock

Mfr. Part No.
5SY42106

Mouser Part No
982-5SY42106

Siemens

Circuit Breakers SUP PTOR 5SY4 2P 480V 10A 5K B-TRIP

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Datasheet

3In Stock

$134.31

$129.40

$126.42

$118.91

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

10 A

400 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 2P 480V 10A 5K D-TRIP

5SY42108
Siemens
1: $134.31
6In Stock

Mfr. Part No.
5SY42108

Mouser Part No
982-5SY42108

Siemens

Circuit Breakers SUP PTOR 5SY4 2P 480V 10A 5K D-TRIP

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Datasheet

6In Stock

$134.31

$115.68

$107.69

$89.04

$82.74

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

10 A

400 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

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

5SY42117
Siemens
1: $119.13
6In Stock

Mfr. Part No.
5SY42117

Mouser Part No
982-5SY42117

Siemens

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

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Datasheet

6In Stock

$119.13

$97.68

$84.85

$82.74

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

5 A

400 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 2P 480V 13A 5K C-TRIP

5SY42137
Siemens
1: $121.13
5In Stock

Mfr. Part No.
5SY42137

Mouser Part No
982-5SY42137

Siemens

Circuit Breakers SUP PTOR 5SY4 2P 480V 13A 5K C-TRIP

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Datasheet

5In Stock

$121.13

$118.94

$112.56

$105.55

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

13 A

400 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 2P 480V 16A 5K B-TRIP

5SY42166
Siemens
1: $134.31
5In Stock

Mfr. Part No.
5SY42166

Mouser Part No
982-5SY42166

Siemens

Circuit Breakers SUP PTOR 5SY4 2P 480V 16A 5K B-TRIP

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Datasheet

5In Stock

$134.31

$115.68

$112.18

$103.86

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

16 A

400 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 2P 480V 16A 5K C-TRIP

5SY42167
Siemens
1: $138.92
4In Stock

Mfr. Part No.
5SY42167

Mouser Part No
982-5SY42167

Siemens

Circuit Breakers SUP PTOR 5SY4 2P 480V 16A 5K C-TRIP

Learn More

Datasheet

4In Stock

$138.92

$116.79

$104.89

$89.04

$82.74

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

16 A

400 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 2P 480V 16A 5K D-TRIP

5SY42168
Siemens
1: $138.40
3In Stock

Mfr. Part No.
5SY42168

Mouser Part No
982-5SY42168

Siemens

Circuit Breakers SUP PTOR 5SY4 2P 480V 16A 5K D-TRIP

Learn More

Datasheet

3In Stock

$138.40

$114.70

$105.74

$87.39

$82.74

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

16 A

400 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 2P 480V 15A 5K C-TRIP

5SY42187
Siemens
1: $137.22
3In Stock
3Expected 2026/09/18

Mfr. Part No.
5SY42187

Mouser Part No
982-5SY42187

Siemens

Circuit Breakers SUP PTOR 5SY4 2P 480V 15A 5K C-TRIP

Learn More

Datasheet

3In Stock

3Expected 2026/09/18

$137.22

$109.66

$101.98

$88.11

$82.74

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

15 A

400 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 2P 480V 20A 5K C-TRIP

5SY42207
Siemens
1: $137.22
14In Stock

Mfr. Part No.
5SY42207

Mouser Part No
982-5SY42207

Siemens

Circuit Breakers SUP PTOR 5SY4 2P 480V 20A 5K C-TRIP

Learn More

Datasheet

14In Stock

$137.22

$115.68

$109.25

$88.11

$82.74

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

20 A

400 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 2P 480V 25A 5K C-TRIP

5SY42257
Siemens
1: $122.80
5In Stock

Mfr. Part No.
5SY42257

Mouser Part No
982-5SY42257

Siemens

Circuit Breakers SUP PTOR 5SY4 2P 480V 25A 5K C-TRIP

Learn More

Datasheet

5In Stock

$122.80

$116.65

$112.43

$108.61

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

25 A

400 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 2P 480V 25A 5K D-TRIP

5SY42258
Siemens
1: $134.31
1In Stock

Mfr. Part No.
5SY42258

Mouser Part No
982-5SY42258

Siemens

Circuit Breakers SUP PTOR 5SY4 2P 480V 25A 5K D-TRIP

Learn More

Datasheet

1In Stock

$134.31

$117.06

$112.18

$103.86

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

25 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: $137.58
4In Stock
1Expected 2026/08/24

Mfr. Part No.
5SY42407

Mouser Part No
982-5SY42407

Siemens

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

Learn More

Datasheet

4In Stock

1Expected 2026/08/24

$137.58

$110.88

$104.36

$89.04

$82.74

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 3P 480V 2A 5K C-TRIP

5SY43027
Siemens
1: $193.00
5In Stock

Mfr. Part No.
5SY43027

Mouser Part No
982-5SY43027

Siemens

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

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Datasheet

5In Stock

$193.00

$172.96

$165.41

$153.26

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

2 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 3P 480V 4A 5K C-TRIP

5SY43047
Siemens
1: $199.68
3In Stock
2Expected 2026/08/25

Mfr. Part No.
5SY43047

Mouser Part No
982-5SY43047

Siemens

Circuit Breakers SUP PTOR 5SY4 3P 480V 4A 5K C-TRIP

Learn More

Datasheet

3In Stock

2Expected 2026/08/25

$199.68

$176.78

$167.13

$158.42

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

4 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers MINIATURE CIRCUIT BREAKER 400V

5SY43055
Siemens
1: $199.95
6In Stock

Mfr. Part No.
5SY43055

Mouser Part No
982-5SY43055

Siemens

Circuit Breakers MINIATURE CIRCUIT BREAKER 400V

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Datasheet

6In Stock

$199.95

$168.34

$151.20

$127.58

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

500 mA

400 VAC

72 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 3P 480V 6A C-TRIP

5SY43067
Siemens
1: $179.24
5In Stock

Mfr. Part No.
5SY43067

Mouser Part No
982-5SY43067

Siemens

Circuit Breakers SUP PTOR 5SY4 3P 480V 6A C-TRIP

Learn More

Datasheet

5In Stock

$179.24

$168.30

$155.16

$127.58

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

6 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 3P 480V 6A 5K D-TRIP

5SY43068
Siemens
1: $199.23
5In Stock

Mfr. Part No.
5SY43068

Mouser Part No
982-5SY43068

Siemens

Circuit Breakers SUP PTOR 5SY4 3P 480V 6A 5K D-TRIP

Learn More

Datasheet

5In Stock

$199.23

$168.34

$155.19

$128.24

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

6 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 3P 480V 10A 5K C-TRIP

5SY43107
Siemens
1: $172.89
4In Stock

Mfr. Part No.
5SY43107

Mouser Part No
982-5SY43107

Siemens

Circuit Breakers SUP PTOR 5SY4 3P 480V 10A 5K C-TRIP

Learn More

Datasheet

4In Stock

$172.89

$155.19

$128.24

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

10 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 3P 480V 10A 5K D-TRIP

5SY43108
Siemens
1: $197.74
1In Stock

Mfr. Part No.
5SY43108

Mouser Part No
982-5SY43108

Siemens

Circuit Breakers SUP PTOR 5SY4 3P 480V 10A 5K D-TRIP

Learn More

Datasheet

1In Stock

$197.74

$165.63

$152.82

$128.24

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

10 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

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

5SY43167
Siemens
1: $197.74
5In Stock

Mfr. Part No.
5SY43167

Mouser Part No
982-5SY43167

Siemens

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

Learn More

Datasheet

5In Stock

$197.74

$172.96

$152.82

$128.24

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

16 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 3P 480V 16A 5K D-TRIP

5SY43168
Siemens
1: $168.79
3In Stock

Mfr. Part No.
5SY43168

Mouser Part No
982-5SY43168

Siemens

Circuit Breakers SUP PTOR 5SY4 3P 480V 16A 5K D-TRIP

Learn More

Datasheet

3In Stock

$168.79

$153.17

$142.94

$128.12

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

16 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 3P 480V 15A 5K C-TRIP

5SY43187
Siemens
1: $193.00
5In Stock

Mfr. Part No.
5SY43187

Mouser Part No
982-5SY43187

Siemens

Circuit Breakers SUP PTOR 5SY4 3P 480V 15A 5K C-TRIP

Learn More

Datasheet

5In Stock

$193.00

$172.96

$165.41

$153.25

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

15 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 3P 480V 20A 5K B-TRIP

5SY43206
Siemens
1: $193.00
5In Stock

Mfr. Part No.
5SY43206

Mouser Part No
982-5SY43206

Siemens

Circuit Breakers SUP PTOR 5SY4 3P 480V 20A 5K B-TRIP

Learn More

Datasheet

5In Stock

$193.00

$172.71

$165.41

$153.25

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

20 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers MINI CIRCUIT BREAKER_20A_400V

5SY43207
Siemens
1: $197.48
5In Stock

Mfr. Part No.
5SY43207

Mouser Part No
982-5SY43207

Siemens

Circuit Breakers MINI CIRCUIT BREAKER_20A_400V

Learn More

Datasheet

5In Stock

$197.48

$162.01

$150.68

$128.24

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

20 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

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

5SY43257
Siemens
1: $192.98
4In Stock

Mfr. Part No.
5SY43257

Mouser Part No
982-5SY43257

Siemens

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

Learn More

Datasheet

4In Stock

$192.98

$172.94

$164.99

$159.27

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

25 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

5SY4 Miniature Circuit Breakers

Customer Service Office

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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