Circuit Breakers – Mouser Singapore

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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 1P 240V 2.5A 7.5K C-TRIP

5SY41007
Siemens
1: $104.31
3In Stock

Mfr. Part No.
5SY41007

Mouser Part No
982-5SY41007

Siemens

Circuit Breakers SUP PTOR 5SY4 1P 240V 2.5A 7.5K C-TRIP

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Datasheet

3In Stock

$104.31

$84.05

$80.89

$75.04

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

2.5 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

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

5SY42406
Siemens
1: $166.98
1In Stock

Mfr. Part No.
5SY42406

Mouser Part No
982-5SY42406

Siemens

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

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Datasheet

1In Stock

$166.98

$158.88

$153.14

$147.94

View

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 2P 480V 4A 5K A-TRIP

5SY42045
Siemens
1: $182.63
5In Stock

Mfr. Part No.
5SY42045

Mouser Part No
982-5SY42045

Siemens

Circuit Breakers SUP PTOR 5SY4 2P 480V 4A 5K A-TRIP

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Datasheet

5In Stock

$182.63

$157.30

$152.54

$141.22

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

4 A

400 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 3P 480V 0.5A 5K D-TRIP

5SY43058
Siemens
1: $262.43
1In Stock

Mfr. Part No.
5SY43058

Mouser Part No
982-5SY43058

Siemens

Circuit Breakers SUP PTOR 5SY4 3P 480V 0.5A 5K D-TRIP

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Datasheet

1In Stock

$262.43

$234.16

$221.68

$208.05

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Min.: 1
Mult.: 1

Circuit Breakers

Miniature

500 mA

400 VAC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

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

5SY41066
Siemens
1: $98.27
44In Stock

Mfr. Part No.
5SY41066

Mouser Part No
982-5SY41066

Siemens

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

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Datasheet

44In Stock

$98.27

$89.50

$82.99

$75.96

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

6 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P 240V 16A 7.5K C-TRIP

5SY41167
Siemens
1: $86.24
32In Stock

Mfr. Part No.
5SY41167

Mouser Part No
982-5SY41167

Siemens

Circuit Breakers SUP PTOR 5SY4 1P 240V 16A 7.5K C-TRIP

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Datasheet

32In Stock

$86.24

$79.79

$60.49

$57.88

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

16 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P 240V 15A 7.5K C-TRIP

5SY41187
Siemens
1: $79.89
33In Stock

Mfr. Part No.
5SY41187

Mouser Part No
982-5SY41187

Siemens

Circuit Breakers SUP PTOR 5SY4 1P 240V 15A 7.5K C-TRIP

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Datasheet

33In Stock

$79.89

$73.54

$71.17

$64.74

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

15 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

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

5SY42107
Siemens
1: $191.53
19In Stock

Mfr. Part No.
5SY42107

Mouser Part No
982-5SY42107

Siemens

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

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Datasheet

19In Stock

$191.53

$175.29

$161.27

$121.07

$111.44

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 4P 480V 40A 5K C-TRIP

5SY44407
Siemens
1: $365.89
8In Stock

Mfr. Part No.
5SY44407

Mouser Part No
982-5SY44407

Siemens

Circuit Breakers SUP PTOR 5SY4 4P 480V 40A 5K C-TRIP

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Datasheet

8In Stock

$365.89

$287.44

$285.67

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

40 A

400 VAC

60 VDC

4 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

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

5SY41018
Siemens
1: $116.76
5In Stock

Mfr. Part No.
5SY41018

Mouser Part No
982-5SY41018

Siemens

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

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Datasheet

5In Stock

$116.76

$99.14

$87.04

$75.22

$69.82

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 2A 7.5K A-TRIP

5SY41025
Siemens
1: $97.53
3In Stock

Mfr. Part No.
5SY41025

Mouser Part No
982-5SY41025

Siemens

Circuit Breakers SUP PTOR 5SY4 1P 240V 2A 7.5K A-TRIP

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Datasheet

3In Stock

$97.53

$84.05

$80.89

$75.04

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

2 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P 240V 2A 7.5K B-TRIP

5SY41026
Siemens
1: $97.53
1In Stock
4Expected 3/8/2026

Mfr. Part No.
5SY41026

Mouser Part No
982-5SY41026

Siemens

Circuit Breakers SUP PTOR 5SY4 1P 240V 2A 7.5K B-TRIP

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Datasheet

1In Stock

4Expected 3/8/2026

$97.53

$85.15

$80.91

$75.68

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

2 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P 240V 2A 7.5K C-TRIP

5SY41027
Siemens
1: $99.50
21In Stock

Mfr. Part No.
5SY41027

Mouser Part No
982-5SY41027

Siemens

Circuit Breakers SUP PTOR 5SY4 1P 240V 2A 7.5K C-TRIP

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Datasheet

21In Stock

$99.50

$89.94

$86.97

$64.74

View

Min.: 1
Mult.: 1

5SY4

Circuit Breakers

Miniature

2 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P 240V 2A 7.5K D-TRIP

5SY41028
Siemens
1: $117.74
8In Stock

Mfr. Part No.
5SY41028

Mouser Part No
982-5SY41028

Siemens

Circuit Breakers SUP PTOR 5SY4 1P 240V 2A 7.5K D-TRIP

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Datasheet

8In Stock

$117.74

$101.37

$83.82

$73.48

View

Min.: 1
Mult.: 1

5SY4

Circuit Breakers

Miniature

2 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers circuit breaker 10ka 1pole b3

5SY41036
Siemens
1: $94.04
1In Stock

Mfr. Part No.
5SY41036

Mouser Part No
982-5SY41036

Siemens

Circuit Breakers circuit breaker 10ka 1pole b3

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Datasheet

1In Stock

$94.04

$72.37

$67.84

$58.29

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 MINIATURE CURCIUT BREAKER, 230/400V 10kA

5SY41037
Siemens
1: $83.50
3In Stock
10Expected 20/7/2026

Mfr. Part No.
5SY41037

Mouser Part No
982-5SY41037

Siemens

Circuit Breakers MINIATURE CURCIUT BREAKER, 230/400V 10kA

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Datasheet

3In Stock

10Expected 20/7/2026

$83.50

$70.62

$68.27

$63.63

View

Min.: 1
Mult.: 1

5SY4

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 C-TRIP

5SY41047
Siemens
1: $82.46
13In Stock

Mfr. Part No.
5SY41047

Mouser Part No
982-5SY41047

Siemens

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

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Datasheet

13In Stock

$82.46

$69.22

$65.13

$60.67

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 0.5A 7.5K A-TRIP

5SY41055
Siemens
1: $97.53
1In Stock

Mfr. Part No.
5SY41055

Mouser Part No
982-5SY41055

Siemens

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

Learn More

Datasheet

1In Stock

$97.53

$84.05

$80.89

$75.04

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

500 mA

400 VAC

72 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

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

5SY41067
Siemens
1: $98.26
19In Stock

Mfr. Part No.
5SY41067

Mouser Part No
982-5SY41067

Siemens

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

Learn More

Datasheet

19In Stock

$98.26

$88.10

$85.41

$64.74

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

6 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

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

5SY41068
Siemens
1: $116.76
5In Stock

Mfr. Part No.
5SY41068

Mouser Part No
982-5SY41068

Siemens

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

Learn More

Datasheet

5In Stock

$116.76

$99.14

$87.05

$75.22

$69.82

Min.: 1
Mult.: 1

5SY4

Circuit Breakers

Miniature

6 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P 240V 8A 7.5K C-TRIP

5SY41087
Siemens
1: $100.94
10In Stock

Mfr. Part No.
5SY41087

Mouser Part No
982-5SY41087

Siemens

Circuit Breakers SUP PTOR 5SY4 1P 240V 8A 7.5K C-TRIP

Learn More

Datasheet

10In Stock

$100.94

$81.74

$75.68

$64.74

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

8 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P 240V 10A 7.5K A-TRIP

5SY41105
Siemens
1: $98.27
4In Stock

Mfr. Part No.
5SY41105

Mouser Part No
982-5SY41105

Siemens

Circuit Breakers SUP PTOR 5SY4 1P 240V 10A 7.5K A-TRIP

Learn More

Datasheet

4In Stock

$98.27

$85.46

$81.19

$75.96

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

10 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P 240V 10A 7.5K B-TRIP

5SY41106
Siemens
1: $98.27
5In Stock

Mfr. Part No.
5SY41106

Mouser Part No
982-5SY41106

Siemens

Circuit Breakers SUP PTOR 5SY4 1P 240V 10A 7.5K B-TRIP

Learn More

Datasheet

5In Stock

$98.27

$89.50

$81.19

$75.96

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

10 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

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

5SY41107
Siemens
1: $98.79
29In Stock

Mfr. Part No.
5SY41107

Mouser Part No
982-5SY41107

Siemens

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

Learn More

Datasheet

29In Stock

$98.79

$88.90

$81.75

$64.74

View

Min.: 1
Mult.: 1

5SY4

Circuit Breakers

Miniature

10 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P 240V 10A 7.5K D-TRIP

5SY41108
Siemens
1: $116.95
10In Stock

Mfr. Part No.
5SY41108

Mouser Part No
982-5SY41108

Siemens

Circuit Breakers SUP PTOR 5SY4 1P 240V 10A 7.5K D-TRIP

Learn More

Datasheet

10In Stock

$116.95

$99.25

$93.94

$75.83

$69.82

Min.: 1
Mult.: 1

5SY4

Circuit Breakers

Miniature

10 A

400 VAC

60 VDC

1 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