Circuit Breakers – Mouser Taiwan

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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: NT$7,078.22
5In Stock

Mfr. Part #
5SY43258

Mouser Part #
982-5SY43258

Siemens

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

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Datasheet

5In Stock

NT$7,078.22

NT$6,199.54

NT$5,400.80

NT$4,596.69

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

25 A

400 VAC

60 VDC

3 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY43307
Siemens
1: NT$7,078.22
5In Stock

Mfr. Part #
5SY43307

Mouser Part #
982-5SY43307

Siemens

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

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Datasheet

5In Stock

NT$7,078.22

NT$6,199.54

NT$5,400.80

NT$4,596.69

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

30 A

400 VAC

60 VDC

3 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY43327
Siemens
1: NT$6,592.82
10In Stock

Mfr. Part #
5SY43327

Mouser Part #
982-5SY43327

Siemens

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

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Datasheet

10In Stock

NT$6,592.82

NT$6,190.22

NT$5,928.87

NT$5,492.94

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

32 A

400 VAC

60 VDC

3 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY43357
Siemens
1: NT$5,818.81
3In Stock

Mfr. Part #
5SY43357

Mouser Part #
982-5SY43357

Siemens

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

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Datasheet

3In Stock

NT$5,818.81

NT$5,695.85

NT$5,283.21

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

35 A

400 VAC

60 VDC

3 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY43407
Siemens
1: NT$7,078.22
5In Stock

Mfr. Part #
5SY43407

Mouser Part #
982-5SY43407

Siemens

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

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Datasheet

5In Stock

NT$7,078.22

NT$6,033.56

NT$5,562.49

NT$4,596.69

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

40 A

400 VAC

60 VDC

3 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY43408
Siemens
1: NT$7,078.22
4In Stock

Mfr. Part #
5SY43408

Mouser Part #
982-5SY43408

Siemens

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

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Datasheet

4In Stock

NT$7,078.22

NT$5,806.98

NT$5,400.80

NT$4,596.69

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

40 A

400 VAC

60 VDC

3 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY43508
Siemens
1: NT$8,252.67
5In Stock

Mfr. Part #
5SY43508

Mouser Part #
982-5SY43508

Siemens

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

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Datasheet

5In Stock

NT$8,252.67

NT$6,969.96

NT$6,299.20

NT$5,384.31

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

50 A

400 VAC

60 VDC

3 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY43638
Siemens
1: NT$8,461.68
3In Stock

Mfr. Part #
5SY43638

Mouser Part #
982-5SY43638

Siemens

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

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Datasheet

3In Stock

NT$8,461.68

NT$7,038.79

NT$6,461.60

NT$5,297.55

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

63 A

400 VAC

60 VDC

3 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY44107
Siemens
1: NT$8,991.90
1In Stock

Mfr. Part #
5SY44107

Mouser Part #
982-5SY44107

Siemens

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

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Datasheet

1In Stock

NT$8,991.90

NT$7,855.09

NT$7,424.18

NT$7,039.51

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

10 A

400 VAC

60 VDC

4 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY44167
Siemens
1: NT$9,645.08
2In Stock

Mfr. Part #
5SY44167

Mouser Part #
982-5SY44167

Siemens

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

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Datasheet

2In Stock

NT$9,645.08

NT$7,855.09

NT$7,424.18

NT$7,039.51

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

16 A

400 VAC

60 VDC

4 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY45067
Siemens
1: NT$4,416.36
4In Stock

Mfr. Part #
5SY45067

Mouser Part #
982-5SY45067

Siemens

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

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Datasheet

4In Stock

NT$4,416.36

NT$3,705.81

NT$3,452.36

NT$2,790.92

NT$2,628.16

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

6 A

230 VAC

60 VDC

2 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY45068
Siemens
1: NT$4,317.42
5In Stock

Mfr. Part #
5SY45068

Mouser Part #
982-5SY45068

Siemens

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

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Datasheet

5In Stock

NT$4,317.42

NT$3,667.46

NT$3,547.00

NT$3,326.52

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

6 A

230 VAC

60 VDC

2 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY45107
Siemens
1: NT$4,403.81
4In Stock

Mfr. Part #
5SY45107

Mouser Part #
982-5SY45107

Siemens

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

Learn More

Datasheet

4In Stock

NT$4,403.81

NT$3,726.25

NT$3,571.74

NT$3,307.16

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

10 A

230 VAC

60 VDC

2 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY45167
Siemens
1: NT$4,605.65
4In Stock

Mfr. Part #
5SY45167

Mouser Part #
982-5SY45167

Siemens

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

Learn More

Datasheet

4In Stock

NT$4,605.65

NT$3,667.46

NT$3,571.74

NT$3,307.16

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

16 A

230 VAC

60 VDC

2 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY45207
Siemens
1: NT$4,317.42
2In Stock

Mfr. Part #
5SY45207

Mouser Part #
982-5SY45207

Siemens

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

Learn More

Datasheet

2In Stock

NT$4,317.42

NT$3,726.25

NT$3,571.74

NT$3,307.16

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

20 A

230 VAC

60 VDC

2 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY46167
Siemens
1: NT$9,616.05
2In Stock

Mfr. Part #
5SY46167

Mouser Part #
982-5SY46167

Siemens

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

Learn More

Datasheet

2In Stock

NT$9,616.05

NT$7,830.00

NT$7,400.52

NT$7,016.92

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

16 A

400 VAC

60 VDC

4 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY41205
Siemens
1: NT$2,749.70
7Expected 9/14/2026

Mfr. Part #
5SY41205

Mouser Part #
982-5SY41205

Siemens

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

Learn More

Datasheet

7Expected 9/14/2026

NT$2,749.70

NT$2,195.45

NT$2,132.36

NT$1,978.20

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

20 A

400 VAC

60 VDC

1 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY43028
Siemens
1: NT$6,917.62
6Expected 8/31/2026

Mfr. Part #
5SY43028

Mouser Part #
982-5SY43028

Siemens

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

Learn More

Datasheet

6Expected 8/31/2026

NT$6,917.62

NT$6,190.22

NT$5,928.87

NT$5,492.94

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

2 A

400 VAC

60 VDC

3 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY41015
Siemens
1: NT$2,424.89
Non-Stocked Lead-Time 6 Weeks

Mfr. Part #
5SY41015

Mouser Part #
982-5SY41015

Siemens

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

Learn More

Datasheet

Non-Stocked Lead-Time 6 Weeks

NT$2,424.89

NT$2,215.53

NT$2,132.36

NT$1,978.20

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

1 A

400 VAC

60 VDC

1 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY41035
Siemens
1: NT$2,424.89
Non-Stocked Lead-Time 4 Weeks

Mfr. Part #
5SY41035

Mouser Part #
982-5SY41035

Siemens

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

Learn More

Datasheet

Non-Stocked Lead-Time 4 Weeks

NT$2,424.89

NT$2,215.53

NT$2,132.36

NT$1,978.20

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

3 A

400 VAC

60 VDC

1 Pole

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers circuit breaker 10ka 1pole b3

5SY41036
Siemens
1: NT$2,479.03
Non-Stocked Lead-Time 4 Weeks

Mfr. Part #
5SY41036

Mouser Part #
982-5SY41036

Siemens

Circuit Breakers circuit breaker 10ka 1pole b3

Learn More

Datasheet

Non-Stocked Lead-Time 4 Weeks

NT$2,479.03

NT$1,907.58

NT$1,788.20

NT$1,536.53

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

3 A

400 VAC

60 VDC

1 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY41038
Siemens
1: NT$3,077.72
Non-Stocked Lead-Time 4 Weeks

Mfr. Part #
5SY41038

Mouser Part #
982-5SY41038

Siemens

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

Learn More

Datasheet

Non-Stocked Lead-Time 4 Weeks

NT$3,077.72

NT$2,616.33

NT$2,294.76

NT$1,982.86

NT$1,840.54

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

3 A

400 VAC

60 VDC

1 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY41045
Siemens
1: NT$2,425.25
Non-Stocked Lead-Time 4 Weeks

Mfr. Part #
5SY41045

Mouser Part #
982-5SY41045

Siemens

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

Learn More

Datasheet

Non-Stocked Lead-Time 4 Weeks

NT$2,425.25

NT$2,215.53

NT$2,132.36

NT$1,978.20

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

4 A

400 VAC

60 VDC

1 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY41046
Siemens
1: NT$2,424.89
Non-Stocked Lead-Time 6 Weeks

Mfr. Part #
5SY41046

Mouser Part #
982-5SY41046

Siemens

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

Learn More

Datasheet

Non-Stocked Lead-Time 6 Weeks

NT$2,424.89

NT$2,215.53

NT$2,132.36

NT$1,978.20

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

4 A

400 VAC

60 VDC

1 Pole

- 40 C

+ 70 C

Non-Illuminated

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

5SY41048
Siemens
1: NT$2,853.30
Non-Stocked Lead-Time 4 Weeks

Mfr. Part #
5SY41048

Mouser Part #
982-5SY41048

Siemens

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

Learn More

Datasheet

Non-Stocked Lead-Time 4 Weeks

NT$2,853.30

NT$2,456.08

NT$2,294.76

NT$1,982.86

NT$1,840.54

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

4 A

400 VAC

60 VDC

1 Pole

- 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