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 3P 480V 25A 5K D-TRIP

5SY43258
Siemens
1: $268.52
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

$268.52

$235.18

$204.88

$174.38

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: $268.52
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

$268.52

$235.18

$204.88

$174.38

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: $250.10
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

$250.10

$234.83

$224.92

$208.38

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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: $220.74
1In Stock
2Expected 21/8/2026

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 21/8/2026

$220.74

$216.08

$200.42

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: $271.52
3In Stock
2Expected 10/8/2026

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 10/8/2026

$271.52

$228.87

$210.99

$174.37

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: $271.52
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

$271.52

$228.85

$210.98

$173.48

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: $313.07
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

$313.07

$264.41

$238.97

$204.26

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: $321.00
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

$321.00

$267.02

$245.13

$200.97

View

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: $341.12
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

$341.12

$297.99

$281.64

$267.05

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: $365.89
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

$365.89

$297.99

$281.64

$267.05

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: $167.54
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

$167.54

$140.58

$130.97

$105.88

$99.70

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: $163.78
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

$163.78

$139.13

$134.56

$126.19

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: $163.78
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

Learn More

Datasheet

4In Stock

$163.78

$139.13

$135.50

$125.46

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: $174.72
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

$174.72

$139.13

$135.50

$125.46

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: $163.78
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

$163.78

$141.36

$135.50

$125.46

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: $364.79
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

$364.79

$297.04

$280.74

$266.19

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: $188.40
5Expected 10/8/2026

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 10/8/2026

$188.40

$157.96

$146.40

$117.67

$111.44

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: $187.08
5Expected 24/9/2026

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 24/9/2026

$187.08

$150.77

$141.90

$121.07

$111.44

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: $91.99
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

$91.99

$84.05

$80.89

$75.04

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: $91.99
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

$91.99

$84.05

$80.89

$75.04

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: $118.88
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

$118.88

$99.32

$83.15

$73.37

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: $102.26
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

$102.26

$88.77

$86.10

$81.89

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: $91.99
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

$91.99

$84.05

$80.89

$75.04

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: $116.76
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

$116.76

$99.25

$87.05

$75.22

$69.82

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: $108.96
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

$108.96

$101.96

$96.80

$91.77

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