Circuit Breakers
Circuit breakers are electrical switches that automatically interrupt the flow of power to prevent damage caused by electrical overloads and short circuits. They are crucial components in electrical systems, providing protection by disconnecting the circuit when excess current flows through it. Circuit breakers come in various types, including thermal, magnetic, and hydraulic, each suited for different applications. These devices play a vital role in ensuring the safety and functionality of electrical systems in homes, buildings, and industrial facilities. Proper installation and maintenance of circuit breakers are essential to avoid equipment damage and fire hazards. Browse our selection of high-quality Circuit Breakers for optimal electrical safety.
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Fuji Electric BW125JAGU 40A 3-Pole Molded Case Circuit Breaker 600VAC 250VDC
Fuji Electric
$130.00Was: $250.00Fuji Electric BW125JAGU 40A 3-Pole Molded Case Circuit Breaker 600VAC 250VDC This is a 3-pole molded case circuit breaker (MCCB) rated for 40 amps at 600VAC or 250VDC. Molded case circuit breakers are designed to provide overcurrent protection,...53357- SKU:
- 53357
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 6.00 LBS
- Brand:
- Fuji Electric
- Model:
- BW125JAGU
- MPN:
- BW125JAGU-3P040
- Secondary Model:
- BW125JAGU-SP040
- SKU:
- 53357
- Condition:
- Open Box – Pulled from Unused Equipment
- Seller Notes:
- Open box unit pulled from solar flash tester that was never used in production.
- Form Factor:
- Molded Case Circuit Breaker
- Country of Manufacture:
- Japan
- Breaker Type:
- Molded Case Circuit Breaker (MCCB)
- Number of Poles:
- 3-Pole (3P)
- Ampere Rating:
- 40A
- Frame Size:
- 125AF
- Voltage Rating AC:
- 600VAC
- Voltage Rating DC:
- 250VDC
- Breaking Capacity:
- 6kV, Category A
- Terminal Type:
- Crimp Terminals
- Phase:
- Three Phase
- Certifications:
- CE, UL
- Compatible With:
- Industrial control panels, machinery, solar test equipment
- Condition Notes:
- This Fuji Electric BW125JAGU 40A 3-Pole Molded Case Circuit Breaker is in open box condition and was pulled from a solar flash tester that was never placed into production use.
- Type:
- Molded Case Circuit Breaker (MCCB)
- Country/Region of Manufacture:
- Japan
$130.00Was: $250.00 -
Moeller FAZ-C6/2 2-Pole DIN Rail Circuit Breaker 6A 10kA 480Y/277VAC C-Curve
Moeller
$40.00Was: $56.00Moeller FAZ-C6/2 2-Pole DIN Rail Circuit Breaker 6A 10kA 480Y/277VAC C-Curve This is a 2-pole DIN rail-mounted circuit breaker rated for 6A at 480Y/277VAC. It provides overcurrent protection with a 10kA breaking capacity and C-curve trip characteristic...53347- SKU:
- 53347
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 3.00 LBS
- Brand:
- Moeller
- Model:
- FAZ-C6/2
- MPN:
- FAZ-C6/2
- SKU:
- 53347
- Condition:
- Used – Inspected
- Seller Notes:
- Unit only; no accessories included.
- Form Factor:
- DIN Rail Mount
- Country of Manufacture:
- Spain
- Number of Poles:
- 2
- Current Rating:
- 6A
- Voltage Rating:
- 480Y/277 VAC
- Rated Breaking Capacity:
- 10kA
- Trip Curve:
- C-Curve
- Mounting Type:
- DIN Rail
- Standards:
- IEC 60898
- Series:
- Xpole
- Compatible With:
- Industrial control panels, distribution boards
- Certifications:
- UL, CE, OVE, IRAM, CCC
- Condition Notes:
- This Moeller FAZ-C6/2 2-pole DIN rail circuit breaker has been visually inspected and shows normal used wear — minor surface marks on the housing consistent with prior panel installation. It has not been bench-tested at our facility.
$40.00Was: $56.00 -
Moeller NZM1 NZMN1-A Molded Case Circuit Breaker 3-Pole 240V 480Y/277V 85KA
Moeller
$35.00Was: $125.00Moeller NZM1 NZMN1-A Molded Case Circuit Breaker 3-Pole 240V 480Y/277V 85KA 3-pole molded case circuit breaker rated for 240V AC and 480Y/277V AC applications. Provides overcurrent protection and load switching in industrial and telecom panel...53345- SKU:
- 53345
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 7.00 LBS
- Brand:
- Moeller
- Model:
- NZM1
- MPN:
- NZMN1-A
- SKU:
- 53345
- Condition:
- Used – Inspected
- Seller Notes:
- Includes rotary operator handle assembly (XDV). No accessories.
- Form Factor:
- Molded Case / Panel Mount
- Country of Manufacture:
- Germany
- Number of Poles:
- 3
- Voltage Rating:
- 240V AC / 480Y/277V AC
- Interrupting Capacity:
- 85KA @ 240V; 35KA @ 480Y/277V
- Max Frame Size Amp Rating:
- 125A
- UL File Number:
- E31593
- Issue No:
- DP-4383
- Standards:
- IEC/EN 60947, DIN VDE 0660, UL Listed
- Ambient Temperature:
- 40°C
- Insulation Voltage:
- 690V
- Impulse Voltage:
- 6000V
- Connector Type:
- NZM1-XKC, NZM1-XKA, NZM1-XKS terminal options
- Wire Range:
- 1x00-12AWG or 1x000-8AWG Cu only
- Type:
- Current Limiting Molded Case Circuit Breaker
- Compatible With:
- Moeller NZM1 series accessories and enclosures
- Condition Notes:
- This Moeller NZM1 NZMN1-A 3-pole molded case circuit breaker has been inspected and shows moderate wear — the rotary handle is noticeably faded and scuffed, and short wire stubs remain in the terminal lugs.
$35.00Was: $125.00 -
Moeller ZM-25-PKZ2 Motor Protection Circuit Breaker 25A 1 & 3 Phase 115-575V
Moeller
$50.00Was: $100.00Moeller ZM-25-PKZ2 Motor Protection Circuit Breaker 25A 1 & 3 Phase 115-575V The Moeller ZM-25-PKZ2 is a motor protection circuit breaker in the PKZ2 series, providing combined thermal overload and magnetic short-circuit protection for motors up to...53210- SKU:
- 53210
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 4.00 LBS
- Brand:
- Moeller
- Model:
- ZM-25-PKZ2
- MPN:
- ZM-25-PKZ2
- Type:
- Motor Protection Circuit Breaker
- SKU:
- 53210
- Series:
- PKZ2
- Current Rating:
- 25A
- Voltage Rating:
- 115-575V AC
- Phase:
- Single Phase or Three Phase
- Trip Type:
- Thermal-Magnetic
- Overload Protection:
- Adjustable Thermal Overload
- Short Circuit Protection:
- Yes — Magnetic Trip
- Form Factor:
- DIN Rail / Panel Mount
- Poles:
- 3
- Certifications:
- CE
- Country/Region of Manufacture:
- Germany
- Compatible With:
- PKZ2 Series Motor Starter Combinations
- Condition:
- Used – Pulled from Working Environment
- Seller Notes:
- Unit only, as shown. Removed from a large controller system.
- Condition Notes:
- This Moeller ZM-25-PKZ2 Motor Protection Circuit Breaker was removed from a large industrial controller system and is in good used condition. The unit shows normal wear consistent with prior service use, including light scuffing and minor surface
$50.00Was: $100.00 -
Mitsubishi NF125-CW No Fuse Circuit Breaker 75A 3-Pole AC220V 30kA 50/60Hz
Mitsubishi
$60.00Was: $125.00Mitsubishi NF125-CW No Fuse Circuit Breaker 75A 3-Pole AC220V 30kA 50/60Hz Molded case circuit breaker (MCCB) rated for 75A at AC 220V three-phase operation. Provides overcurrent and short-circuit protection for industrial control systems and...53206- SKU:
- 53206
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 4.00 LBS
- Brand:
- Mitsubishi Electric
- Model:
- NF125-CW
- MPN:
- NF125-CW
- Type:
- No Fuse Circuit Breaker (MCCB)
- SKU:
- 53206
- Condition:
- Used – Pulled from Working Environment
- Seller Notes:
- Pulled from a large industrial controller system; three color-coded lead wires attached
- Country/Region of Manufacture:
- Japan
- Current Rating:
- 75A
- Voltage Rating:
- AC 220V
- Number of Poles:
- 3-Pole
- Interrupting Capacity:
- 30kA
- Frequency:
- 50/60Hz
- Frame Size:
- NF125
- Phase:
- Three Phase
- Certifications:
- CE
- Form Factor:
- DIN Rail / Panel Mount
- Condition Notes:
- This Mitsubishi NF125-CW No Fuse Circuit Breaker was removed from a large industrial controller system and is in good used condition. The breaker body is clean and intact with only minor surface wear consistent with normal service use.
$60.00Was: $125.00 -
Siemens B230 Type BL 2-Pole 30A 120/240V Miniature Circuit Breaker HACR
Siemens
$22.00Was: $40.00Siemens B230 Type BL 2-Pole 30A 120/240V Miniature Circuit Breaker HACRA 2-pole miniature circuit breaker rated for 30A at 120/240V AC. Provides thermal-magnetic trip protection for branch circuits in residential and commercial electrical panels...53157- SKU:
- 53157
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 2.00 LBS
- Brand:
- Siemens
- Model:
- B230
- MPN:
- B230
- Type:
- Miniature Circuit Breaker
- SKU:
- 53157
- Breaker Type:
- Type BL
- Number of Poles:
- 2
- Amperage Rating:
- 30A
- Voltage Rating:
- 120/240V AC
- Frequency:
- 60Hz
- Interrupting Rating:
- 10,000A (10kA) RMS Sym.
- Trip Mechanism:
- Thermal-Magnetic
- HACR Rated:
- Yes
- Listed:
- UL Listed, CSA
- Wire Compatibility:
- CU/AL, 60/75°C wire
- Country/Region of Manufacture:
- Mexico
- Assembled By:
- Siemens Energy & Automation, Inc., Alpharetta, GA
- Condition:
- Used – Pulled from Working Environment
- Seller Notes:
- Sold as-is unit; no accessories included.
- Condition Notes:
- Siemens B230 Type BL 30A 2-pole circuit breaker. Inspected, good used condition. Pulled from a working environment where it was in active service. Body intact, terminals clean. No accessories included.
$22.00Was: $40.00 -
Siemens B120 Type BL 1-Pole 20A 120/240V Miniature Circuit Breaker 10kA
Siemens
$12.00Was: $25.00Siemens B120 Type BL 1-Pole 20A 120/240V Miniature Circuit Breaker 10kAMiniature circuit breaker designed for overcurrent protection in single-pole branch circuits. Provides thermal-magnetic trip protection at 20A for 120/240V AC systems.Specifications...53155- SKU:
- 53155
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 1.00 LBS
- Brand:
- Siemens
- Model:
- B120
- MPN:
- B120
- Type:
- Miniature Circuit Breaker
- GTIN:
- 783643263420
- SKU:
- 53155
- Series:
- Type BL
- Number of Poles:
- 1
- Amperage:
- 20A
- Voltage Rating:
- 120/240V AC
- Interrupting Rating:
- 10,000A (10kA) RMS Sym.
- Trip Mechanism:
- Thermal-Magnetic
- HACR Rated:
- Yes
- SWD Rated:
- Yes
- UL Listed:
- Yes — File YF-7195
- Temperature Rating:
- 40°C
- Enclosure Requirement:
- Use only in listed enclosures
- Country/Region of Manufacture:
- Mexico
- Manufacturer:
- Siemens Energy & Automation, Inc.
- Condition:
- Used – Pulled from Working Environment
- Seller Notes:
- Breaker only — no accessories included.
- Condition Notes:
- Siemens B120 Type BL 20A 1-pole circuit breaker. Inspected, pulled from a working environment. Housing intact, toggle and terminals in good shape, normal surface wear. Please view photos and contact us with questions.
$12.00Was: $25.00 -
AutomationDirect F3P 35k Molded Case Circuit Breaker 100A 600V 3-Pole Eaton
Automation Direct
$170.00Was: $350.00AutomationDirect F3P 35k Molded Case Circuit Breaker 100A 600V 3-Pole EatonThe AutomationDirect F3P 35k is a 3-pole molded case circuit breaker (MCCB) rated at 100 amperes and 600V AC, with a 35kA interrupting capacity. It is manufactured by Eaton...53151- SKU:
- 53151
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 7.00 LBS
- Brand:
- AutomationDirect
- Model:
- F3P 35k
- MPN:
- F3P 35k
- Type:
- Molded Case Circuit Breaker (MCCB)
- SKU:
- 53151
- Manufacturer:
- Eaton / Cutler-Hammer (made for AutomationDirect)
- Amperage Rating:
- 100A
- Voltage Rating:
- 600V AC
- Number of Poles:
- 3
- Interrupting Capacity:
- 35kA @ 240V; 18kA @ 600V (RMS Sym. Amps)
- Interrupting Capacity (IEC 157-1):
- 65kA @ 240V; 35kA @ 415V; 10kA @ 250V DC
- Impulse Voltage (Uimp):
- 8 kV
- Frequency:
- 50/60 Hz
- Ambient Temperature Rating:
- 40°C
- Conductor Material:
- CU/AL (Copper or Aluminum)
- Wire Range (AWG):
- 14-10 AWG to 3-4/0 AWG
- DC Use:
- Use 2 poles for DC
- Certifications:
- UL Listed, CSA
- Phase:
- Three Phase
- Form Factor:
- Molded Case / Panel Mount
- Condition:
- Used – Pulled from Working Environment
- Seller Notes:
- Circuit breaker only; no accessories included.
- Country/Region of Manufacture:
- United States
- Condition Notes:
- This AutomationDirect F3P 35k 100A 600V 3-Pole Molded Case Circuit Breaker has been inspected and is in good used condition. Pulled from a working environment. Shows normal surface soiling and minor wear. Please contact us with any questions.
$170.00Was: $350.00