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Carling Technologies MD1B346203A37BE Miniature Hydraulic Circuit Breaker

The CARLING TECHNOLOGIES M-Series circuit breaker offers a cost-effective solution for demanding applications requiring space-saving features and aesthetics. Its vertically mounted parallel pole configuration is UL489A listed up to 50 amps, making it suitable for telecommunication equipment. The breaker provides design flexibility with choices of rocker actuator styles, colors, and imprinting, and features a Rockerguard bezel to prevent inadvertent actuation. It's ideal for communication equipment, vehicles, marine applications, generators, power supplies, and medical equipment.

Authorized Distributors
Source:DigiKey
Part No:MD1-B-34-620-3-A37-B-E
Stock:0
Inv Date:06-06-2026
Price: Unit price: $32.819
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Source:DigiKey
Part No:MD1B346203A37BE
Stock:0
Inv Date:06-06-2026
Price: Unit price: $32.819
Buy/RFQ:
Part No:MD1-B-34-620-3-A37-B-E
Stock:0
Inv Date:06-07-2026
Price: Unit price: $28.82
Buy/RFQ:
Part No:MD1-B-34-620-3-A37-B-E
Stock:0
Inv Date:06-06-2026
Price: Unit price: $29.4
Buy/RFQ:
Part No:MD1-B-34-620-3-A37-B-E
Stock:5
Inv Date:06-06-2026
Price: Unit price: $23.023
Buy/RFQ:
Part No:MD1-B-34-620-3-A37-B-E
Stock:5
Inv Date:06-06-2026
Price: Unit price: $23.023
Buy/RFQ:

Carling Technologies MD1B346203A37BE 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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You can download the MD1B346203A37BE datasheet or visit the Carling Technologies website for support.

Who is the manufacturer of MD1B346203A37BE?

Carling Technologies

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