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AIRPAX / SENSATA M3901901338 Magnetic Circuit Breaker

The AIRPAX / SENSATA M39019/01-338 is a low-power, magnetic, trip-free, sealed, one-pole circuit breaker conforming to MIL-PRF-39019/1H. Designed for critical applications requiring reliable overcurrent protection, this circuit breaker offers a compact and robust solution. It is commonly used in military, aerospace, and industrial equipment where space and weight are limited. The device incorporates a magnetic operating principle for fast response and a sealed construction to prevent contamination. Its trip-free design ensures that the circuit is quickly interrupted in the event of an overload or short circuit, protecting connected components and preventing damage. The circuit breaker's specifications, including current rating, time delay, and resistance/impedance, are detailed in Table I of MIL-PRF-39019/1H, allowing for precise selection based on application requirements.

Authorized Distributors
Source:DigiKey
Part No:M39019/01-338
Stock:0
Inv Date:06-09-2026
Price: Unit price: $896.1
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Part No:M39019/01-338
Stock:0
Inv Date:06-10-2026
Price: Unit price: $896.1
Buy/RFQ:
Part No:M39019/01-338
Stock:0
Inv Date:06-09-2026
Price: Unit price: $914.02
Buy/RFQ:
Part No:M39019/01-338
Stock:20
Inv Date:06-09-2026
Price: Unit price: $560.38
Buy/RFQ:
Part No:M39019/01-338
Stock:20
Inv Date:06-09-2026
Price: Unit price: $560.38
Buy/RFQ:

AIRPAX / SENSATA M3901901338 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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You can download the M3901901338 datasheet or visit the AIRPAX / SENSATA website for support.

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AIRPAX / SENSATA

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