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

501 Circuit Breakers

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

Results: 1,203

Applied Filters:

Manufacturer

Series

Product

Type

Current Rating

Voltage Rating AC

Voltage Rating DC

Number of Poles

Actuator Type

Minimum Operating Temperature

Maximum Operating Temperature

Illuminated

Packaging

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 QZ-1-13-D-2-01

7940102590
Weidmuller
1: ¥6,864.9
5In Stock

Mfr. Part #
7940102590

Mouser Part #
470-7940102590

Weidmuller

Circuit Breakers QZ-1-13-D-2-01

Datasheet

5In Stock

¥6,864.9

¥5,884.9

¥5,193.9

¥4,840.2

View

Min.: 1
Mult.: 1

Hydraulic Magnetic Circuit Breakers

1 A

277 VAC

1 Pole

Lever

- 40 C

+ 85 C

Non-Illuminated

Circuit Breakers MD1B344501A35BC

MD1-B-34-450-1-A35-B-C
Carling Technologies
1: ¥7,251.9
9Expected 10/7/2026

Mfr. Part #
MD1-B-34-450-1-A35-B-C

Mouser Part #
691-MD1B34451A35BC

Carling Technologies

Circuit Breakers MD1B344501A35BC

Learn More

Datasheet

9Expected 10/7/2026

¥7,251.9

¥6,016.1

¥5,097.6

¥4,802

View

Min.: 1
Mult.: 1

Circuit Breakers

Hydraulic Magnetic

5 A

125 VAC, 250 VAC

80 VDC

1 Pole

Rocker

- 40 C

+ 85 C

Non-Illuminated

Circuit Breakers CA1B212450121MG

CA1-B2-12-450-121-MG
Carling Technologies
1: ¥11,014.1
8Expected 9/21/2026

Mfr. Part #
CA1-B2-12-450-121-MG

Mouser Part #
691-CA1B212450121MG

Carling Technologies

Circuit Breakers CA1B212450121MG

Learn More

Datasheet

8Expected 9/21/2026

¥11,014.1

¥9,138.8

¥8,383.1

¥7,555.9

View

Min.: 1
Mult.: 1

Circuit Breakers

Supplementary Protector

5 A

240 VAC

80 VDC

1 Pole

Handle

- 40 C

+ 85 C

Non-Illuminated

Circuit Breakers Mag Circuit Breaker

MB2-B-34-450-1-A27-B-E
Carling Technologies
1: ¥12,693.4
10On Order

Mfr. Part #
MB2-B-34-450-1-A27-B-E

Mouser Part #
691-MB2B344501A27BE

Carling Technologies

Circuit Breakers Mag Circuit Breaker

Learn More

Datasheet

10On Order

¥12,693.4

¥10,145.4

¥9,009.3

¥8,813.3

View

Min.: 1
Mult.: 1

Circuit Breakers

Hydraulic Magnetic

5 A

125 VAC, 250 VAC

80 VDC

2 Pole

Rocker

- 40 C

+ 85 C

Non-Illuminated

Circuit Breakers Mag Circuit Breaker

MA2-B-24-450-1-A24-B-D
Carling Technologies
1: ¥12,429.3
7On Order

Mfr. Part #
MA2-B-24-450-1-A24-B-D

Mouser Part #
691-MA2B244501A24BD

Carling Technologies

Circuit Breakers Mag Circuit Breaker

Learn More

Datasheet

7On Order

¥12,429.3

¥10,311.5

¥9,509.2

¥9,471

View

Min.: 1
Mult.: 1

Circuit Breakers

Supplementary Protector

5 A

125 VAC, 250 VAC

80 VDC

2 Pole

Rocker

- 40 C

+ 85 C

Non-Illuminated

Circuit Breakers Mag Circuit Breaker

MA2-B-34-450-1-A26-B-E
Carling Technologies
1: ¥12,429.3
8Expected 9/2/2026

Mfr. Part #
MA2-B-34-450-1-A26-B-E

Mouser Part #
691-MA2B344501A26BE

Carling Technologies

Circuit Breakers Mag Circuit Breaker

Learn More

Datasheet

8Expected 9/2/2026

¥12,429.3

¥10,311.5

¥9,509.2

¥8,977.7

View

Min.: 1
Mult.: 1

Circuit Breakers

Hydraulic Magnetic

5 A

125 VAC, 250 VAC

80 VDC

2 Pole

Rocker

- 40 C

+ 85 C

Non-Illuminated

Tube

Circuit Breakers 1-pole, Handle, 5 amp circuit breaker, Stud 10-32 terminals, UL 1077 Recognized CSA Accepted

CA1-B0-34-450-121-C
Carling Technologies
1: ¥7,928
30Expected 9/2/2026

Mfr. Part #
CA1-B0-34-450-121-C

Mouser Part #
691-CA1B034450121C

Carling Technologies

Circuit Breakers 1-pole, Handle, 5 amp circuit breaker, Stud 10-32 terminals, UL 1077 Recognized CSA Accepted

Learn More

Datasheet

30Expected 9/2/2026

¥7,928

¥6,577.6

¥5,464.7

¥4,893.3

View

Min.: 1
Mult.: 1

Circuit Breakers

Supplementary Protector

5 A

480 VAC

150 VDC

1 Pole

Handle

- 40 C

+ 85 C

Non-Illuminated

Circuit Breakers 1-pole, Two Color Curved Visi-Rocker, 5 amp circuit breaker, Push-On 0.250 Tab (Q.C.) terminals, UL 1077 Recognized CSA Accepted

AC1-B0-34-450-1G1-C
Carling Technologies
1: ¥7,926.3
30On Order

Mfr. Part #
AC1-B0-34-450-1G1-C

Mouser Part #
691-AC1B0344501G1C

Carling Technologies

Circuit Breakers 1-pole, Two Color Curved Visi-Rocker, 5 amp circuit breaker, Push-On 0.250 Tab (Q.C.) terminals, UL 1077 Recognized CSA Accepted

Learn More

Datasheet

30On Order

¥7,926.3

¥6,575.9

¥5,929.8

¥5,549.4

View

Min.: 1
Mult.: 1

Hydraulic Magnetic Circuit Breakers

5 A

277 VAC

80 VDC

1 Pole

Rocker

- 40 C

+ 85 C

Non-Illuminated

Circuit Breakers CA1B01445012AL

CA1-B0-14-450-12A-L
Carling Technologies
1: ¥9,409.6
6Expected 9/2/2026

Mfr. Part #
CA1-B0-14-450-12A-L

Mouser Part #
691-CA1B01445012AL

Carling Technologies

Circuit Breakers CA1B01445012AL

Learn More

Datasheet

6Expected 9/2/2026

¥9,409.6

¥7,805

¥7,200.4

¥6,193.9

View

Min.: 1
Mult.: 1

Circuit Breakers

Supplementary Protector

5 A

480 VAC

150 VDC

1 Pole

Handle

- 40 C

+ 85 C

Non-Illuminated

Circuit Breakers MU1B224501A21BC

MU1-B-22-450-1-A21-B-C
Carling Technologies
1: ¥6,213.8
8On Order

Mfr. Part #
MU1-B-22-450-1-A21-B-C

Mouser Part #
691-MU1B224501A21BC

Carling Technologies

Circuit Breakers MU1B224501A21BC

Learn More

Datasheet

8On Order

¥6,213.8

¥5,155.7

¥4,541.2

¥4,155.8

View

Min.: 1
Mult.: 1

Hydraulic Magnetic Circuit Breakers

Hydraulic Magnetic

5 A

125 VAC, 250 VAC

80 VDC

1 Pole

Rocker

- 40 C

+ 85 C

Non-Illuminated

Circuit Breakers CA2B024650111C

CA2-B0-24-650-111-C
Carling Technologies
1: ¥19,839
9Expected 9/11/2026

Mfr. Part #
CA2-B0-24-650-111-C

Mouser Part #
691-CA2B024650111C

Carling Technologies

Circuit Breakers CA2B024650111C

Learn More

Datasheet

9Expected 9/11/2026

¥19,839

¥16,450.5

¥15,171.6

¥13,714.9

View

Min.: 1
Mult.: 1

Circuit Breakers

Hydraulic Magnetic

50 A

120 VAC, 240 VAC

2 Pole

Handle

- 40 C

+ 85 C

Non-Illuminated

Circuit Breakers 1-pole, Handle, 5 amp circuit breaker, Push-On 0.250 Tab (Q.C.) terminals, UL 1077 Recognized CSA Accepted VDE Certified to IEC/EN 60934

BA1-B0-34-450-121-D
Carling Technologies
1: ¥6,479.6
30Expected 10/21/2026

Mfr. Part #
BA1-B0-34-450-121-D

Mouser Part #
691-BA1B034450121D

Carling Technologies

Circuit Breakers 1-pole, Handle, 5 amp circuit breaker, Push-On 0.250 Tab (Q.C.) terminals, UL 1077 Recognized CSA Accepted VDE Certified to IEC/EN 60934

Learn More

Datasheet

30Expected 10/21/2026

¥6,479.6

¥5,375

¥4,755.4

¥4,405

View

Min.: 1
Mult.: 1

Circuit Breakers

Hydraulic Magnetic

5 A

277 VAC

80 VDC

1 Pole

Handle

- 40 C

+ 85 C

Non-Illuminated

Circuit Breakers 5 A ONE POLE ANGLED

MA1-B-34-450-1-A26-B-C
Carling Technologies
1: ¥6,296.9
30Expected 9/3/2026

Mfr. Part #
MA1-B-34-450-1-A26-B-C

Mouser Part #
691-MA1B344501A26BC

Carling Technologies

Circuit Breakers 5 A ONE POLE ANGLED

Learn More

Datasheet

30Expected 9/3/2026

¥6,296.9

¥5,223.8

¥4,743.8

¥4,383.4

View

Min.: 1
Mult.: 1

Hydraulic Magnetic Circuit Breakers

Rocker

5 A

125 VAC, 250 VAC

80 VDC

1 Pole

Rocker

- 40 C

+ 85 C

Non-Illuminated

Circuit Breakers SPDT 0.110 QC TERM CURRNT RATING 50.000

CA1-B2-14650-121C
Carling Technologies
1: ¥9,637.1
30On Order

Mfr. Part #
CA1-B2-14650-121C

Mouser Part #
691-CA1-B214650121C

Carling Technologies

Circuit Breakers SPDT 0.110 QC TERM CURRNT RATING 50.000

Learn More

Datasheet

30On Order

¥9,637.1

¥7,994.4

¥7,270.2

¥6,343.4

View

Min.: 1
Mult.: 1

Circuit Breakers

Hydraulic Magnetic

50 A

1 Pole

Handle

- 40 C

+ 85 C

Non-Illuminated

Circuit Breakers 8A PUSH TO RESET

W28-XQ1A-8
TE Connectivity / P&B
1: ¥825.5
2,067Expected 2/11/2027

Mfr. Part #
W28-XQ1A-8

Mouser Part #
655-W28-XQ1A-8

TE Connectivity / P&B

Circuit Breakers 8A PUSH TO RESET

Datasheet

2,067Expected 2/11/2027

¥825.5

¥666.1

¥591.3

¥566.4

View

Min.: 1
Mult.: 1

W28

Thermal Circuit Breakers

Thermal Magnetic

8 A

250 VAC

32 VDC

1 Pole

Push to Reset

- 20 C

+ 60 C

Non-Illuminated

Circuit Breakers SUP PTOR 5SY6 1P+N 240V 1A 7.5K C-TRIP

5SY65017
Siemens
1: ¥17,304.3
Non-Stocked Lead-Time 4 Weeks
New At Mouser

Mfr. Part #
5SY65017

Mouser Part #
982-5SY65017

New At Mouser

Siemens

Circuit Breakers SUP PTOR 5SY6 1P+N 240V 1A 7.5K C-TRIP

Datasheet

Non-Stocked Lead-Time 4 Weeks

¥17,304.3

¥14,940.7

¥13,839.5

¥12,407.7

¥11,967.5

Min.: 1
Mult.: 1

Circuit Breakers BREAKER ED 3P 125A 600V 18KA AUX ST

ED63B12501S01
Siemens
1: ¥1,447,347.2
Non-Stocked Lead-Time 1 Week

Mfr. Part #
ED63B12501S01

Mouser Part #
982-ED63B12501S01

Siemens

Circuit Breakers BREAKER ED 3P 125A 600V 18KA AUX ST

Datasheet

Non-Stocked Lead-Time 1 Week

¥1,447,347.2

Min.: 1
Mult.: 1

Circuit Breakers

Magnetic

125 A

600 VAC

500 VDC

3 Pole

Circuit Breakers BRKR 3VA51 3P 50A 65KA MCP HI NUT

3VA51501MH320AA0
Siemens
1: ¥120,432.5
Non-Stocked Lead-Time 5 Weeks

Mfr. Part #
3VA51501MH320AA0

Mouser Part #
982-3VA51501MH320AA0

Siemens

Circuit Breakers BRKR 3VA51 3P 50A 65KA MCP HI NUT

Learn More

Datasheet

Non-Stocked Lead-Time 5 Weeks

¥120,432.5

¥115,554.1

¥112,967.9

View

Min.: 1
Mult.: 1

3VA

Thermal Magnetic Circuit Breakers

System Protection

50 A

690 VAC

3 Pole

Paddle

- 25 C

+ 70 C

Non-Illuminated

Circuit Breakers Cir Brkr Hyd Mag

203-2-1-60-501-4-1-13
AIRPAX
3: ¥48,291.9
Non-Stocked Lead-Time 6 Weeks

Mfr. Part #
203-2-1-60-501-4-1-13

Mouser Part #
874-20321605014113

AIRPAX

Circuit Breakers Cir Brkr Hyd Mag

Non-Stocked Lead-Time 6 Weeks

¥48,291.9

Min.: 3
Mult.: 1

Circuit Breakers

500 mA

1 Pole

Rocker

- 40 C

+ 85 C

Illuminated

Circuit Breakers BRKR 3VA51 3P 50A 65KA MCP HI

3VA51501MH310AA0
Siemens
1: ¥105,724.3
Non-Stocked Lead-Time 5 Weeks

Mfr. Part #
3VA51501MH310AA0

Mouser Part #
982-3VA51501MH310AA0

Siemens

Circuit Breakers BRKR 3VA51 3P 50A 65KA MCP HI

Learn More

Datasheet

Non-Stocked Lead-Time 5 Weeks

¥105,724.3

¥100,515.4

¥98,273.1

View

Min.: 1
Mult.: 1

3VA

Thermal Magnetic Circuit Breakers

System Protection

50 A

690 VAC

3 Pole

Paddle

- 25 C

+ 70 C

Non-Illuminated

Circuit Breakers BRKR 3VA51 3P 50A 65KA MCP HI AL

3VA51501MH360AA0
Siemens
1: ¥119,884.3
Non-Stocked Lead-Time 5 Weeks

Mfr. Part #
3VA51501MH360AA0

Mouser Part #
982-3VA51501MH360AA0

Siemens

Circuit Breakers BRKR 3VA51 3P 50A 65KA MCP HI AL

Learn More

Datasheet

Non-Stocked Lead-Time 5 Weeks

¥119,884.3

¥117,750

¥116,765

View

Min.: 1
Mult.: 1

3VA

Thermal Magnetic Circuit Breakers

System Protection

50 A

690 VAC

3 Pole

Paddle

- 25 C

+ 70 C

Non-Illuminated

Circuit Breakers BRKR ED6 3P 600V 15A ST/AUX

ED63B01501S01
Siemens
1: ¥892,418.8
Non-Stocked Lead-Time 1 Week

Mfr. Part #
ED63B01501S01

Mouser Part #
982-ED63B01501S01

Siemens

Circuit Breakers BRKR ED6 3P 600V 15A ST/AUX

Non-Stocked Lead-Time 1 Week

¥892,418.8

Min.: 1
Mult.: 1

Circuit Breakers

Low Voltage

15 A

600 VAC

3 Pole

Handle

Non-Illuminated

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

5SY45015
Siemens
1: ¥18,769.3
Non-Stocked Lead-Time 6 Weeks

Mfr. Part #
5SY45015

Mouser Part #
982-5SY45015

Siemens

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

Learn More

Datasheet

Non-Stocked Lead-Time 6 Weeks

¥18,769.3

¥17,264.4

¥16,548.5

¥15,354.3

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

1 A

230 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

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

5SY45017
Siemens
1: ¥18,769.3
Non-Stocked Lead-Time 4 Weeks

Mfr. Part #
5SY45017

Mouser Part #
982-5SY45017

Siemens

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

Learn More

Datasheet

Non-Stocked Lead-Time 4 Weeks

¥18,769.3

¥17,264.4

¥16,548.5

¥15,354.3

View

Min.: 1
Mult.: 1

Circuit Breakers

Miniature

1 A

230 VAC

60 VDC

2 Pole

Lever

- 40 C

+ 70 C

Non-Illuminated

Circuit Breakers Cir Brkr Hyd Mag

203-2-1-61-501-4-1-1
AIRPAX
3: ¥41,820.7
Non-Stocked Lead-Time 6 Weeks

Mfr. Part #
203-2-1-61-501-4-1-1

Mouser Part #
874-2032161501411

AIRPAX

Circuit Breakers Cir Brkr Hyd Mag

Non-Stocked Lead-Time 6 Weeks

¥41,820.7

Min.: 3
Mult.: 1

214
8345
3120-N
3VA
A
AM
AP
A-Series Circuit Breaker
B
BDA
BGA
B-Series Circuit Breaker
C
CEL
CEL/CML
C-Series Circuit Breaker
D
D-Series Circuit Breaker
E
F

10 mA
11 mA
50 mA
100 mA
150 mA
200 mA
500 mA
1 A
1.5 A
1.75 A
2 A
2.5 A
3 A
4 A
4.5 A
5 A
6 A
6.25 A
7 A
7.5 A