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Carling Technologies MU1B724501C21BC Hydraulic-Magnetic Circuit Breaker

CARLING TECHNOLOGIES' M-Series hydraulic-magnetic circuit breakers are designed for high-performance applications requiring a compact, front panel mount design. These breakers offer extensive design flexibility with multiple agency approvals and options for terminals, panel hardware, and actuator styles. The wiping contacts ensure longevity, and they are available in one to two pole configurations, rated from 0.02 to 50 amps, up to 250VAC/80VDC. Typical applications include telecom, transportation, marine, generators, power supplies, medical equipment, and commercial food equipment.

Authorized Distributors
Source:DigiKey
Part No:MU1-B-72-450-1-C21-B-C
Stock:0
Inv Date:06-06-2026
Price: Unit price: $28.704
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Source:DigiKey
Part No:MU1B724501C21BC
Stock:0
Inv Date:06-06-2026
Price: Unit price: $28.704
Buy/RFQ:
Part No:MU1-B-72-450-1-C21-B-C
Stock:0
Inv Date:06-07-2026
Price: Unit price: $30.55
Buy/RFQ:
Part No:MU1-B-72-450-1-C21-B-C
Stock:0
Inv Date:06-06-2026
Price: Unit price: $23.5
Buy/RFQ:
Part No:MU1-B-72-450-1-C21-B-C
Stock:1
Inv Date:06-06-2026
Price: Unit price: $19.866
Buy/RFQ:
Part No:MU1-B-72-450-1-C21-B-C
Stock:1
Inv Date:06-06-2026
Price: Unit price: $19.866
Buy/RFQ:

Carling Technologies MU1B724501C21BC Hydraulic-Magnetic Circuit Breaker Specifications:

  • Maximum Voltage: 125/250 VAC, 50/60 Hz, 80 VDC
  • Current Ratings: 0.100, 0.250, 0.500, 0.750, 1.00 thru 15.0 amps in 1 amp increments, 18.0, 20.0, 25.0, 30.0
  • Voltage Coils: DC - 6V, 12V; AC - 120V
  • Auxiliary Switch Rating: SPDT; 7A 250VAC, 7A (Res) 28VDC, 4A (Ind.) 28VDC, 0.25A 80VDC (Res) (silver contacts), 0.1A 125VAC (gold contacts)
  • Insulation Resistance: Minimum of 100 Megohms at 500 VDC
  • Dielectric Strength: UL, CSA 1500V, 50/60 Hz for one minute
  • Resistance per Pole: 0.10-20.0 amps: ±25%, 20.1 - 50.0 amps: ±35%
  • Number of Poles: 1 or 2
  • Weight: Approximately 30 grams/pole
  • Operating Temperature: -40° C to +85° C
  • Chemical Resistance: Clean with detergents or alcohol; avoid hydrocarbon solvents

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Frequently Asked Questions

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You can click on the BUY or RFQ button to purchase MU1B724501C21BC from an authorized Carling Technologies distributor.

How do I troubleshoot issues or seek technical support for part MU1B724501C21BC?

You can download the MU1B724501C21BC datasheet or visit the Carling Technologies website for support.

Who is the manufacturer of MU1B724501C21BC?

Carling Technologies

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