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Carling Technologies MU1B646251A21BC Miniature Hydraulic Circuit Breaker

The M-Series circuit breaker from CARLING TECHNOLOGIES is a versatile and cost-effective solution for demanding applications requiring space-saving features and design flexibility. Its compact, vertically mounted parallel pole configuration is UL489A listed up to 50 amps, making it suitable for telecommunication equipment and other applications. Available in various configurations with rocker actuator styles, colors, and imprinting options, the M-Series offers a wide range of customization possibilities. It also features a Rockerguard bezel to prevent inadvertent actuation and a wiping contact design for long-term reliability.

Authorized Distributors
Source:DigiKey
Part No:MU1-B-64-625-1-A21-B-C
Stock:0
Inv Date:06-06-2026
Price: Unit price: $28.704
Buy/RFQ:
Source:DigiKey
Part No:MU1B646251A21BC
Stock:0
Inv Date:06-06-2026
Price: Unit price: $28.704
Buy/RFQ:
Part No:MU1-B-64-625-1-A21-B-C
Stock:0
Inv Date:06-07-2026
Price: Unit price: $36.75
Buy/RFQ:
Part No:MU1-B-64-625-1-A21-B-C
Stock:0
Inv Date:06-06-2026
Price: Unit price: $23.5
Buy/RFQ:
Part No:MU1-B-64-625-1-A21-B-C
Stock:1
Inv Date:06-06-2026
Price: Unit price: $25.146
Buy/RFQ:
Part No:MU1-B-64-625-1-A21-B-C
Stock:1
Inv Date:06-06-2026
Price: Unit price: $25.146
Buy/RFQ:

Carling Technologies MU1B646251A21BC Miniature Hydraulic 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
  • Auxiliary Switch Rating: SPDT; 7A 250VAC, 7A (Res) 28VDC, 4A (Ind.) 28VDC, 0.25A 80VDC (Res), 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
  • Endurance: 10,000 ON-OFF operations @ 6 per minute
  • Trip Free: All M-Series Circuit Breakers will trip on overload
  • Number of Poles: 1 or 2
  • Weight: Approximately 30 grams/pole
  • Operating Temperature: -40° C to +85° C
  • Tolerance: ±25% (0.10 - 20.0 amps), ±35% (20.1 - 50.0 amps)

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Frequently Asked Questions

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You can download the MU1B646251A21BC datasheet or visit the Carling Technologies website for support.

Who is the manufacturer of MU1B646251A21BC?

Carling Technologies

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