Circuit Breakers – Mouser United Kingdom

.hide-partial { max-height: none; } .show-more { display: none; }

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.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 358

Applied Filters:

Series

Current Rating

Voltage Rating AC

Voltage Rating DC

Number of Poles

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

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

5SY43408
Siemens
1: £135.10
5In Stock

Mfr. Part No.
5SY43408

Mouser Part No
982-5SY43408

Siemens

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

Learn More

Datasheet

5In Stock

£135.10

£121.21

£99.21

£86.70

Min.: 1
Mult.: 1

Circuit Breaker

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: £192.85
5In Stock

Mfr. Part No.
5SY43508

Mouser Part No
982-5SY43508

Siemens

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

Learn More

Datasheet

5In Stock

£192.85

£138.87

£133.53

£119.85

View

Min.: 1
Mult.: 1

Circuit Breaker

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: £160.16
3In Stock

Mfr. Part No.
5SY43638

Mouser Part No
982-5SY43638

Siemens

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

Learn More

Datasheet

3In Stock

£160.16

£136.29

£116.16

£106.10

View

Min.: 1
Mult.: 1

Circuit Breaker

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: £177.73
1In Stock

Mfr. Part No.
5SY44107

Mouser Part No
982-5SY44107

Siemens

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

Learn More

Datasheet

1In Stock

£177.73

£158.04

£154.71

£152.75

View

Min.: 1
Mult.: 1

Circuit Breaker

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: £182.97
2In Stock

Mfr. Part No.
5SY44167

Mouser Part No
982-5SY44167

Siemens

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

Learn More

Datasheet

2In Stock

£182.97

£151.15

£146.27

£142.24

View

Min.: 1
Mult.: 1

Circuit Breaker

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: £84.32
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

Learn More

Datasheet

4In Stock

£84.32

£65.74

£60.82

£53.33

£51.25

Min.: 1
Mult.: 1

Circuit Breaker

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: £86.03
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

Learn More

Datasheet

5In Stock

£86.03

£74.69

£71.87

£70.44

View

Min.: 1
Mult.: 1

Circuit Breaker

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: £84.37
5In 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

5In Stock

£84.37

£79.54

£72.34

£70.74

View

Min.: 1
Mult.: 1

Circuit Breaker

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: £90.55
5In 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

5In Stock

£90.55

£69.10

£67.25

£66.64

View

Min.: 1
Mult.: 1

Circuit Breaker

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: £84.33
3In 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

3In Stock

£84.33

£73.28

£69.46

£66.97

View

Min.: 1
Mult.: 1

Circuit Breaker

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: £190.35
3In 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

3In Stock

£190.35

£153.67

£151.14

£149.54

View

Min.: 1
Mult.: 1

Circuit Breaker

Miniature

16 A

400 VAC

60 VDC

4 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY4 1P 240V 1.6A 7.5K C-TRIP

5SY41157
Siemens
1: £53.06
1Expected 04/03/2026

Mfr. Part No.
5SY41157

Mouser Part No
982-5SY41157

Siemens

Circuit Breakers SUP PTOR 5SY4 1P 240V 1.6A 7.5K C-TRIP

Learn More

Datasheet

1Expected 04/03/2026

£53.06

Min.: 1
Mult.: 1

Circuit Breaker

Miniature

1.6 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: £50.41
20On Order

Mfr. Part No.
5SY41167

Mouser Part No
982-5SY41167

Siemens

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

Learn More

Datasheet

20On Order

£50.41

£41.81

£38.56

£31.92

View

Min.: 1
Mult.: 1

Circuit Breaker

Miniature

16 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

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

5SY42105
Siemens
1: £89.35
6Expected 06/03/2026

Mfr. Part No.
5SY42105

Mouser Part No
982-5SY42105

Siemens

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

Learn More

Datasheet

6Expected 06/03/2026

£89.35

£83.66

£80.67

£79.45

View

Min.: 1
Mult.: 1

Circuit Breaker

Miniature

10 A

400 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

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

5SY43257
Siemens
1: £136.69
5Expected 10/04/2026

Mfr. Part No.
5SY43257

Mouser Part No
982-5SY43257

Siemens

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

Learn More

Datasheet

5Expected 10/04/2026

£136.69

£121.37

£116.48

£114.70

View

Min.: 1
Mult.: 1

Circuit Breaker

Miniature

25 A

400 VAC

60 VDC

3 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

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

5SY41015
Siemens
1: £48.61
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

£48.61

£47.33

£46.71

£46.16

View

Min.: 1
Mult.: 1

Circuit Breaker

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: £53.06
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

£53.06

Min.: 1
Mult.: 1

Circuit Breaker

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: £58.45
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

£58.45

£48.98

£45.17

£37.40

Min.: 1
Mult.: 1

Circuit Breaker

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: £53.06
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

£53.06

Min.: 1
Mult.: 1

Circuit Breaker

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: £48.21
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

£48.21

£44.28

£42.97

£42.07

View

Min.: 1
Mult.: 1

Circuit Breaker

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 C-TRIP

5SY41057
Siemens
1: £53.06
Non-Stocked Lead-Time 5 Weeks

Mfr. Part No.
5SY41057

Mouser Part No
982-5SY41057

Siemens

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

Learn More

Datasheet

Non-Stocked Lead-Time 5 Weeks

£53.06

Min.: 1
Mult.: 1

Circuit Breaker

Miniature

500 mA

400 VAC

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: £62.18
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

£62.18

Min.: 1
Mult.: 1

Circuit Breaker

Miniature

500 mA

400 VAC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

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

5SY41065
Siemens
1: £46.23
Non-Stocked Lead-Time 3 Weeks

Mfr. Part No.
5SY41065

Mouser Part No
982-5SY41065

Siemens

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

Learn More

Datasheet

Non-Stocked Lead-Time 3 Weeks

£46.23

£44.10

£42.85

£41.83

View

Min.: 1
Mult.: 1

Circuit Breaker

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 A-TRIP

5SY41085
Siemens
1: £53.06
Non-Stocked Lead-Time 5 Weeks

Mfr. Part No.
5SY41085

Mouser Part No
982-5SY41085

Siemens

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

Learn More

Datasheet

Non-Stocked Lead-Time 5 Weeks

£53.06

Min.: 1
Mult.: 1

Circuit Breaker

Miniature

8 A

400 VAC

60 VDC

1 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

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

5SY41088
Siemens
1: £62.18
Non-Stocked Lead-Time 7 Weeks

Mfr. Part No.
5SY41088

Mouser Part No
982-5SY41088

Siemens

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

Learn More

Datasheet

Non-Stocked Lead-Time 7 Weeks

£62.18

Min.: 1
Mult.: 1

Circuit Breaker

Miniature

8 A

400 VAC

60 VDC

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