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AIRPAX / SENSATA M3901902257 Low-Power Magnetic Circuit Breaker

The AIRPAX / SENSATA M39019/02-257 is a sealed, trip-free, one-pole magnetic circuit breaker meeting MIL-PRF-39019/2H specifications. It is designed for low-power applications and features auxiliary contacts for added versatility. The circuit breaker offers robust protection against overcurrent conditions and is suitable for use in military, aerospace, and industrial equipment. Its compact size and reliable performance make it an ideal choice for critical circuit protection.

Authorized Distributors
Source:DigiKey
Part No:M39019/02-257
Stock:0
Inv Date:06-09-2026
Price: Unit price: $1001.32
Buy/RFQ:
Part No:M39019/02-257
Stock:0
Inv Date:06-09-2026
Price: Unit price: $1001.32
Buy/RFQ:
Part No:M39019/02-257
Stock:0
Inv Date:06-09-2026
Price: Unit price: $1418.5
Buy/RFQ:
Part No:M39019/02-257
Stock:5
Inv Date:06-09-2026
Price: Unit price: $768.11
Buy/RFQ:
Part No:M39019/02-257
Stock:5
Inv Date:06-09-2026
Price: Unit price: $768.11
Buy/RFQ:

AIRPAX / SENSATA M3901902257 Low-Power 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 MS250820,-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
  • auxiliary_contact_terminals: Accommodate two number 20 AWG wires
  • 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

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Frequently Asked Questions

Where can I buy AIRPAX / SENSATA M3901902257?

You can click on the BUY or RFQ button to purchase M3901902257 from an authorized AIRPAX / SENSATA distributor.

How do I troubleshoot issues or seek technical support for part M3901902257?

You can download the M3901902257 datasheet or visit the AIRPAX / SENSATA website for support.

Who is the manufacturer of M3901902257?

AIRPAX / SENSATA

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