Circuit Breakers – Mouser South Africa

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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 prot

3120-N321-P7T1-W01D-2.5A
E-T-A
1: $38.45
9Expected 2026/04/07

Mfr. Part No.
3120-N321-P7T1-W01D-2.5A

Mouser Part No
457-321P7T1W01D2.5A

E-T-A

Learn More

Datasheet

9Expected 2026/04/07

$38.45

$33.34

$31.58

$29.48

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

2.5 A

240 VAC

50 VDC

2 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N321-P7T1-W02F-2A
E-T-A
1: $44.50
10Expected 2026/02/27

Mfr. Part No.
3120-N321-P7T1-W02F-2A

Mouser Part No
457-321P7T1W02F2A

E-T-A

Learn More

Datasheet

10Expected 2026/02/27

$44.50

$33.34

$31.58

$29.48

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

2 A

240 VAC

50 VDC

2 Pole

Rocker

- 30 C

+ 60 C

Non-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-N324-P7T1-W19FG4-1A
E-T-A
1: $55.48
9Expected 2026/03/31

Mfr. Part No.
3120-N324-P7T1-W19FG4-1A

Mouser Part No
457-324P7T1W19FG41A

E-T-A

Learn More

Datasheet

9Expected 2026/03/31

$55.48

$48.43

$38.09

$36.66

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

1 A

230 VAC

50 VDC

2 Pole

Rocker

- 30 C

+ 60 C

Illuminated

3120-N521-P7T1-W19DG3-10A
E-T-A
1: $51.01
10Expected 2026/04/17

Mfr. Part No.
3120-N521-P7T1-W19DG3-10A

Mouser Part No
457-521P7T1W19DG310

E-T-A

Learn More

Datasheet

10Expected 2026/04/17

$51.01

$42.32

$36.29

$34.18

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

10 A

240 VAC

50 VDC

2 Pole

Rocker

- 30 C

+ 60 C

Illuminated

3120-N523-P7T1-W19DG3-10A
E-T-A
1: $51.01
9Expected 2026/04/10

Mfr. Part No.
3120-N523-P7T1-W19DG3-10A

Mouser Part No
457-523P7T1W19DG310A

E-T-A

Datasheet

9Expected 2026/04/10

$51.01

$42.32

$35.08

$32.04

$27.02

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

10 A

240 VAC

50 VDC

2 Pole

Rocker

- 30 C

+ 60 C

Illuminated

3120-N321-P7T1-W19DG4-10A
E-T-A
1: $46.49
40Expected 2026/04/07

Mfr. Part No.
3120-N321-P7T1-W19DG4-10A

Mouser Part No
457-N321P7T1W19DG410

E-T-A

Learn More

Datasheet

40Expected 2026/04/07

$46.49

$41.95

$36.60

$32.24

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

10 A

240 VAC

50 VDC

2 Pole

Rocker

- 30 C

+ 60 C

Illuminated

3120-N321-P7T1-W19DG4-15A
E-T-A
1: $39.36
10Expected 2026/03/17

Mfr. Part No.
3120-N321-P7T1-W19DG4-15A

Mouser Part No
457-N321P7T1W19DG415

E-T-A

Learn More

Datasheet

10Expected 2026/03/17

$39.36

$34.53

$28.09

$27.02

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-N324-P7T1-W19FG4-X3120-S01BM-2.5A
E-T-A
1: $90.10
13Expected 2026/04/17

Mfr. Part No.
3120-N324-P7T1-W19FG4-X3120-S01BM-2.5A

Mouser Part No
457-FG4X3120S01BM2.5

E-T-A

Learn More

Datasheet

13Expected 2026/04/17

$90.10

$76.85

$67.77

$58.56

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

2.5 A

240 VAC

50 VDC

2 Pole

Rocker

- 30 C

+ 60 C

Illuminated

Circuit Breakers Min Ord Qty 10. 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 prot

3120-N303-N7Q1-W01K-16A
E-T-A
1: $32.41
Non-Stocked Lead-Time 9 Weeks
New At Mouser

Mfr. Part No.
3120-N303-N7Q1-W01K-16A

Mouser Part No
457-0N303N7Q1W01K16A

New At Mouser

E-T-A

Datasheet

Non-Stocked Lead-Time 9 Weeks

$32.41

$26.90

$22.02

$19.41

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

Rocker

3120-N311-P7T1-W01H-0.5A
E-T-A
1: $37.90
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N311-P7T1-W01H-0.5A

Mouser Part No
457-0N311P7T1W01H0.5

E-T-A

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

$37.90

$31.45

$25.92

$22.86

$19.21

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

500 mA

240 VAC

50 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N311-P7T1-W01K-12A
E-T-A
1: $30.76
Non-Stocked Lead-Time 9 Weeks
New At Mouser

Mfr. Part No.
3120-N311-P7T1-W01K-12A

Mouser Part No
457-0N311P7T1W01K12A

New At Mouser

E-T-A

Datasheet

Non-Stocked Lead-Time 9 Weeks

$30.76

$25.53

$20.90

$18.43

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

Rocker

3120-N311-P7T1-W02F-2.5A
E-T-A
1: $38.51
Non-Stocked Lead-Time 9 Weeks
New At Mouser

Mfr. Part No.
3120-N311-P7T1-W02F-2.5A

Mouser Part No
457-0N311P7T1W02F25A

New At Mouser

E-T-A

Datasheet

Non-Stocked Lead-Time 9 Weeks

$38.51

$35.49

$30.17

$29.19

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

2.5 A

240 VAC

50 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N311-P7T1-W04K-18A
E-T-A
1: $30.76
Non-Stocked Lead-Time 9 Weeks
New At Mouser

Mfr. Part No.
3120-N311-P7T1-W04K-18A

Mouser Part No
457-0N311P7T1W04K18A

New At Mouser

E-T-A

Datasheet

Non-Stocked Lead-Time 9 Weeks

$30.76

$25.53

$20.90

$18.43

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

Rocker

3120-N311-P7T1-W14DR3-3A
E-T-A
1: $37.59
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N311-P7T1-W14DR3-3A

Mouser Part No
457-0N311P7T1W14DR33

E-T-A

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

$37.59

$31.18

$25.70

$22.68

$19.06

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

3 A

115 VAC

50 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Illuminated

3120-N311-P7T1-W14DR3-5A
E-T-A
1: $37.59
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N311-P7T1-W14DR3-5A

Mouser Part No
457-0N311P7T1W14DR35

E-T-A

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

$37.59

$31.18

$25.70

$22.68

$19.06

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

5 A

115 VAC

50 VDC

1 Pole

Rocker

- 30 C

+ 60 C

Illuminated

3120-N31F-P7T1-SGRD-10A
E-T-A
1: $32.94
Non-Stocked Lead-Time 9 Weeks
New At Mouser

Mfr. Part No.
3120-N31F-P7T1-SGRD-10A

Mouser Part No
457-0N31FP7T1SGRD10A

New At Mouser

E-T-A

Datasheet

Non-Stocked Lead-Time 9 Weeks

$32.94

$27.33

$22.52

$19.86

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

Rocker

3120-N31F-P7T1-SGRD-15A
E-T-A
1: $32.94
Non-Stocked Lead-Time 9 Weeks
New At Mouser

Mfr. Part No.
3120-N31F-P7T1-SGRD-15A

Mouser Part No
457-0N31FP7T1SGRD15A

New At Mouser

E-T-A

Datasheet

Non-Stocked Lead-Time 9 Weeks

$32.94

$27.33

$23.33

$21.50

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

Rocker

3120-N31F-P7T1-SGRD-20A
E-T-A
1: $32.94
Non-Stocked Lead-Time 9 Weeks
New At Mouser

Mfr. Part No.
3120-N31F-P7T1-SGRD-20A

Mouser Part No
457-0N31FP7T1SGRD20A

New At Mouser

E-T-A

Datasheet

Non-Stocked Lead-Time 9 Weeks

$32.94

$27.33

$22.52

$19.86

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

Rocker

3120-N323-P7T1-W02L-15A
E-T-A
1: $33.61
Non-Stocked Lead-Time 9 Weeks
New At Mouser

Mfr. Part No.
3120-N323-P7T1-W02L-15A

Mouser Part No
457-0N323P7T1W02L15A

New At Mouser

E-T-A

Datasheet

Non-Stocked Lead-Time 9 Weeks

$33.61

$30.98

$26.33

$25.34

$22.18

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

15 A

240 VAC

50 VDC

2 Pole

Rocker

- 30 C

+ 60 C

Non-Illuminated

3120-N35F-H7T1-SGRD-16A
E-T-A
1: $39.50
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
3120-N35F-H7T1-SGRD-16A

Mouser Part No
457-0N35FH7T1SGRD16A

E-T-A

Datasheet

Non-Stocked Lead-Time 10 Weeks

$39.50

$35.19

$25.90

$23.66

$20.70

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

Rocker

Circuit Breakers Min Ord Qty 10. 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-N514-P7T1-W01D-10A
E-T-A
1: $36.06
Non-Stocked Lead-Time 9 Weeks
New At Mouser

Mfr. Part No.
3120-N514-P7T1-W01D-10A

Mouser Part No
457-0N514P7T1W01D10A

New At Mouser

E-T-A

Datasheet

Non-Stocked Lead-Time 9 Weeks

$36.06

$29.91

$24.66

$21.76

$18.28

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

Rocker

3120-N521-P7T1-W01L-16A
E-T-A
1: $38.46
Non-Stocked Lead-Time 9 Weeks
New At Mouser

Mfr. Part No.
3120-N521-P7T1-W01L-16A

Mouser Part No
457-0N521P7T1W01L16A

New At Mouser

E-T-A

Datasheet

Non-Stocked Lead-Time 9 Weeks

$38.46

$33.35

$31.58

$29.48

View

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

Rocker

3120-N521-P7T1-W02D-16A
E-T-A
1: $38.46
Non-Stocked Lead-Time 9 Weeks
New At Mouser

Mfr. Part No.
3120-N521-P7T1-W02D-16A

Mouser Part No
457-0N521P7T1W02D16A

New At Mouser

E-T-A

Datasheet

Non-Stocked Lead-Time 9 Weeks

$38.46

$34.40

$29.24

$27.45

$23.28

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

Rocker

3120-N521-P7T1-W15DY3-2A
E-T-A
1: $72.41
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
3120-N521-P7T1-W15DY3-2A

Mouser Part No
457-0N521P7T1W15DY32

E-T-A

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

$72.41

$61.76

$56.48

$50.29

$45.37

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

2 A

115 VAC

50 VDC

2 Pole

Rocker

- 30 C

+ 60 C

Illuminated

3120-N521-P7T1-W16D-3.5A
E-T-A
1: $34.52
Non-Stocked Lead-Time 9 Weeks
New At Mouser

Mfr. Part No.
3120-N521-P7T1-W16D-3.5A

Mouser Part No
457-0N521P7T1W16D35A

New At Mouser

E-T-A

Datasheet

Non-Stocked Lead-Time 9 Weeks

$34.52

$33.60

$28.54

$27.53

$27.02

Min.: 1
Mult.: 1

3120-N

Thermal Circuit Breaker

Overcurrent Protection

3.5 A

240 VAC

50 VDC

2 Pole

Rocker

- 30 C

+ 60 C

Illuminated

3120-N Next-Generation Circuit Breaker/Switch

Customer Service Office

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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