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AIRPAX / SENSATA M3901901257 Magnetic Circuit Breaker

The AIRPAX / SENSATA M39019/01-257 is a low-power, sealed, trip-free, one-pole magnetic circuit breaker conforming to MIL-PRF-39019/1H. Designed for use in military and industrial applications, this circuit breaker provides reliable overcurrent protection. It features a compact design and robust construction, ensuring consistent performance in demanding environments. The device is characterized by its ability to interrupt circuits quickly and safely, preventing damage to connected equipment. It is suitable for applications requiring a small, reliable circuit protection solution.

Authorized Distributors
Source:DigiKey
Part No:M39019/01-257
Stock:0
Inv Date:06-09-2026
Price: Unit price: $850.623
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Part No:M39019/01-257
Stock:0
Inv Date:06-09-2026
Price: Unit price: $850.62
Buy/RFQ:
Part No:M39019/01-257
Stock:0
Inv Date:06-09-2026
Price: Unit price: $1205.17
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Part No:M39019/01-257
Stock:17
Inv Date:06-09-2026
Price: Unit price: $563.87
Buy/RFQ:
Part No:M39019/01-257
Stock:17
Inv Date:06-09-2026
Price: Unit price: $563.87
Buy/RFQ:

AIRPAX / SENSATA M3901901257 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
  • hex_mounting_nut_thread: .375-32 UNEF-2B thread, .093 ±.005 (2.36 mm ±0.13 mm) thick or equivalent MS25082-20, -B20
  • internal_tooth_lockwasher: .507/.493 O.D., .392/.382 I.D., .025 ±.005 (0.64 mm ±0.13mm) thick, stainless steel or equivalent MS35333-134
  • effective_bushing_thread_length: .280 (7.11 mm) minimum
  • marking_location: Any surface except the mounting surface
  • lock_ring_requirement: Not required if on-off plate has locking tab
  • numerical_marking: Optional on circuit diagram
  • terminal_screw: MS35265-26 or equivalent

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Frequently Asked Questions

Where can I buy AIRPAX / SENSATA M3901901257?

You can click on the BUY or RFQ button to purchase M3901901257 from an authorized AIRPAX / SENSATA distributor.

How do I troubleshoot issues or seek technical support for part M3901901257?

You can download the M3901901257 datasheet or visit the AIRPAX / SENSATA website for support.

Who is the manufacturer of M3901901257?

AIRPAX / SENSATA

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