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AIRPAX / SENSATA M3901901250 Magnetic Circuit Breaker

The AIRPAX / SENSATA M39019/01-250 is a low-power, magnetic, trip-free, one-pole circuit breaker conforming to MIL-PRF-39019. It is designed to provide overcurrent protection in a variety of electronic systems and equipment. The circuit breaker features a sealed construction to ensure reliable operation in harsh environments. It is commonly used in military and aerospace applications where compact size and robust performance are critical. The device incorporates a trip-free mechanism, ensuring rapid interruption of the circuit in the event of an overload or short circuit. Dimensions vary based on dash number, with metric equivalents provided for general information. Mounting hardware includes a hex nut and lockwasher.

Authorized Distributors
Source:Newark
Part No:M39019/01-250
Stock:2
Inv Date:06-09-2026
Price: Unit price: $876.14
Buy/RFQ:
Source:DigiKey
Part No:M39019/01-250
Stock:0
Inv Date:06-09-2026
Price: Unit price: $850.623
Buy/RFQ:
Part No:M39019/01-250
Stock:0
Inv Date:06-10-2026
Price: Unit price: $850.62
Buy/RFQ:
Part No:M39019/01-250
Stock:0
Inv Date:06-09-2026
Price: Unit price: $876.14
Buy/RFQ:
Part No:M39019/01-250
Stock:14
Inv Date:06-09-2026
Price: Unit price: $475.82
Buy/RFQ:
Part No:M39019/01-250
Stock:14
Inv Date:06-09-2026
Price: Unit price: $475.82
Buy/RFQ:

AIRPAX / SENSATA M3901901250 Magnetic Circuit Breaker Specifications:

  • voltage_and_frequency_rating: 50 V dc, maximum and 240 V ac, maximum at 60 Hz and 400 Hz
  • high_inrush: 800 percent at 60 Hz and dc, 1,400 percent at 400 Hz
  • current_rating: See table I
  • time_delay: See table I
  • resistance_or_impedance: See table I
  • weight: Approximately 50 grams
  • mounting_hardware: See figure 1
  • terminals: See figure 1
  • pin: The PIN shall be M39019/01-(dash number taken from table I)
  • tolerance: ±.031 (0.79 mm)
  • effective_bushing_thread_length: 0.280 (7.11 mm) minimum

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Frequently Asked Questions

Where can I buy AIRPAX / SENSATA M3901901250?

You can click on the BUY or RFQ button to purchase M3901901250 from an authorized AIRPAX / SENSATA distributor.

How do I troubleshoot issues or seek technical support for part M3901901250?

You can download the M3901901250 datasheet or visit the AIRPAX / SENSATA website for support.

Who is the manufacturer of M3901901250?

AIRPAX / SENSATA

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