Circuit Breakers – Mouser Singapore

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3120-N Next-Generation Circuit Breaker/Switch

E-T-A Circuit Breakers 3120-N Next-Generation Circuit Breaker/Switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. 3120-N Next-Generation Circuit Breaker/Switch, which replaces the 3120-F series, is ideally suited for overload protection of motors, pumps, transformers, and cables. After tripping, the device can reliably, easily, and quickly be reset. The positively trip-free mechanism ensures reliable circuit disconnection even with the actuator blocked.

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Part #

Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload protection of motors

3120-N511-P7T1-W19DG2-10A
E-T-A
1: $52.24
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N511-P7T1-W19DG2-10A

Mouser Part No
457-3120N51119DG210A

E-T-A

Datasheet

Non-Stocked Lead-Time 9 Weeks

$52.24

$43.34

$36.88

$33.97

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

10 A

240 VAC

24 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Illuminated

3120-N521-P7T1-W14KR4-20A
E-T-A
1: $61.52
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N521-P7T1-W14KR4-20A

Mouser Part No
457-3120N52114KR420A

E-T-A

Datasheet

Non-Stocked Lead-Time 9 Weeks

$61.52

$52.42

$48.75

$44.52

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

20 A

230 VAC

50 VDC

2 Pole

Rocker

- 30 C

+ 60 C

Illuminated

3120-N521-P7T1-W19DG3-15A
E-T-A
1: $56.32
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N521-P7T1-W19DG3-15A

Mouser Part No
457-3120N52119DG315A

E-T-A

Datasheet

Non-Stocked Lead-Time 9 Weeks

$56.32

$49.57

$49.55

$49.21

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

15 A

240 VAC

50 VDC

2 Pole

Rocker

- 30 C

+ 60 C

Illuminated

3120-N521-P7T1-W01D-5A
E-T-A
1: $57.09
30Expected 15/4/2026

Mfr. Part No.
3120-N521-P7T1-W01D-5A

Mouser Part No
457-3120N521T1W01D5A

E-T-A

Datasheet

30Expected 15/4/2026

$57.09

$48.33

$39.10

$38.13

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

5 A

240 VAC

50 VDC

2 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N521-P7T1-W01D-6A
E-T-A
1: $53.43
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N521-P7T1-W01D-6A

Mouser Part No
457-3120N521T1W01D6A

E-T-A

Datasheet

Non-Stocked Lead-Time 9 Weeks

$53.43

$46.34

$43.88

$40.98

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

6 A

240 VAC

50 VDC

2 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N523-P7T1-W19XG4-20A
E-T-A
1: $73.61
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N523-P7T1-W19XG4-20A

Mouser Part No
457-3120N52319XG420A

E-T-A

Datasheet

Non-Stocked Lead-Time 9 Weeks

$73.61

$55.54

$46.82

$46.79

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

20 A

230 VAC

50 VDC

2 Pole

Rocker

- 30 C

+ 60 C

Illuminated

Circuit Breakers The 3120-N...4 IP65 rated thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N...4 is ideally suite

3120-N554-P7T1-W14DR3-16A
E-T-A
1: $42.66
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N554-P7T1-W14DR3-16A

Mouser Part No
457-3120N55414DR316A

E-T-A

Datasheet

Non-Stocked Lead-Time 9 Weeks

$42.66

$38.96

$38.95

$37.13

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

16 A

115 VAC

50 VDC

2 Pole

Rocker

- 30 C

+ 60 C

Illuminated

Circuit Breakers N...4 IP65 rated thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N...4 is ideally suited for overload protection

3120-N524-P7T1-W02D-7A
E-T-A
1: $59.74
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N524-P7T1-W02D-7A

Mouser Part No
457-312N524P7T1W2D7A

E-T-A

Datasheet

Non-Stocked Lead-Time 9 Weeks

$59.74

$50.90

$47.33

$43.24

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

Rocker

3120-N32G-P7T1-D01X-20A
E-T-A
1: $54.60
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N32G-P7T1-D01X-20A

Mouser Part No
457-3132GP7T1D01X20A

E-T-A

Datasheet

Non-Stocked Lead-Time 9 Weeks

$54.60

$47.36

$44.80

$41.84

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

20 A

240 VAC

50 VDC

2 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N313-P7T1-W01D-12A
E-T-A
1: $42.74
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N313-P7T1-W01D-12A

Mouser Part No
457-313P7T1W01D12A

E-T-A

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

$42.74

$35.46

$30.07

$27.69

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

12 A

240 VAC

50 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N313-P7T1-W01F-10A
E-T-A
1: $42.74
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N313-P7T1-W01F-10A

Mouser Part No
457-313P7T1W01F10A

E-T-A

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

$42.74

$35.46

$30.07

$27.69

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

10 A

240 VAC

50 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N313-P7T1-W01L-10A
E-T-A
1: $42.74
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N313-P7T1-W01L-10A

Mouser Part No
457-313P7T1W01L10A

E-T-A

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

$42.74

$35.46

$30.07

$27.69

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

10 A

240 VAC

50 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N313-P7T1-W01L-2A
E-T-A
1: $52.67
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N313-P7T1-W01L-2A

Mouser Part No
457-313P7T1W01L2

E-T-A

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

$52.67

$43.70

$37.17

$34.24

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

2 A

240 VAC

50 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N313-P7T1-W01L-4A
E-T-A
1: $42.74
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N313-P7T1-W01L-4A

Mouser Part No
457-313P7T1W01L4

E-T-A

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

$42.74

$35.46

$30.07

$27.69

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

4 A

240 VAC

50 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N313-P7T1-W01X-20A
E-T-A
1: $42.74
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N313-P7T1-W01X-20A

Mouser Part No
457-313P7T1W01X20A

E-T-A

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

$42.74

$35.46

$30.07

$27.69

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

20 A

240 VAC

50 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N313-P7T1-W02F-20A
E-T-A
1: $42.23
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N313-P7T1-W02F-20A

Mouser Part No
457-313P7T1W02F20A

E-T-A

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

$42.23

$35.03

$32.32

$27.67

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

20 A

240 VAC

50 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N313-P7T1-W02F-2A
E-T-A
1: $52.67
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N313-P7T1-W02F-2A

Mouser Part No
457-313P7T1W02F2A

E-T-A

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

$52.67

$43.70

$37.17

$34.24

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

2 A

240 VAC

50 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N313-P7T1-W02F-3.5A
E-T-A
1: $42.74
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N313-P7T1-W02F-3.5A

Mouser Part No
457-313P7T1W02F3.5A

E-T-A

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

$42.74

$35.46

$30.07

$27.69

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

3.5 A

240 VAC

50 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N313-P7T1-W02F-3A
E-T-A
1: $42.74
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N313-P7T1-W02F-3A

Mouser Part No
457-313P7T1W02F3A

E-T-A

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

$42.74

$35.46

$30.07

$27.69

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

3 A

240 VAC

50 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N313-P7T1-W02F-4A
E-T-A
1: $42.74
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N313-P7T1-W02F-4A

Mouser Part No
457-313P7T1W02F4A

E-T-A

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

$42.74

$35.46

$30.07

$27.69

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

4 A

240 VAC

50 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N313-P7T1-W02F-5A
E-T-A
1: $42.74
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N313-P7T1-W02F-5A

Mouser Part No
457-313P7T1W02F5A

E-T-A

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

$42.74

$35.46

$30.07

$27.69

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

5 A

240 VAC

50 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N313-P7T1-W02F-8A
E-T-A
1: $42.74
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N313-P7T1-W02F-8A

Mouser Part No
457-313P7T1W02F8A

E-T-A

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

$42.74

$35.46

$30.07

$27.69

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

8 A

240 VAC

50 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N313-P7T1-W02L-15A
E-T-A
1: $36.07
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N313-P7T1-W02L-15A

Mouser Part No
457-313P7T1W02L15A

E-T-A

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

$36.07

$32.03

$30.07

$27.69

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

15 A

240 VAC

50 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N313-P7T1-W02L-5A
E-T-A
1: $42.74
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N313-P7T1-W02L-5A

Mouser Part No
457-313P7T1W02L5A

E-T-A

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

$42.74

$35.46

$30.07

$27.69

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

5 A

240 VAC

50 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N313-P7T1-W02L-6A
E-T-A
1: $42.74
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N313-P7T1-W02L-6A

Mouser Part No
457-313P7T1W02L6A

E-T-A

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

$42.74

$35.46

$30.07

$27.69

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

6 A

240 VAC

50 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N Next-Generation Circuit Breaker/Switch

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100 mA
200 mA
300 mA
500 mA
600 mA
700 mA
800 mA
1 A
1.2 A
1.5 A
1.8 A
2 A
2.5 A
3 A
3.5 A
4 A
4.5 A
5 A
6 A
7 A