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AIRPAX / SENSATA M3901901252S Magnetic Circuit Breaker

The AIRPAX / SENSATA M39019/01-252S 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 military and industrial applications. The circuit breaker features a sealed construction to prevent contamination and ensure reliable operation. It is characterized by its compact size, low power consumption, and quick-acting trip mechanism. The device is suitable for use in electronic equipment, control panels, and other applications where overcurrent protection is required. Dimensions are specified in inches, with metric equivalents provided for general information. The part number includes a dash number that corresponds to specific electrical characteristics as detailed in Table I.

Authorized Distributors
Source:DigiKey
Part No:M39019/01-252S
Stock:0
Inv Date:06-08-2026
Price: Unit price: $961.06
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Part No:M39019/01-252S
Stock:0
Inv Date:06-09-2026
Price: Unit price: $961.06
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Part No:M39019/01-252S
Stock:0
Inv Date:06-08-2026
Price: Unit price: $1205.68
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Part No:M39019/01-252S
Stock:4
Inv Date:06-08-2026
Price: Unit price: $740.39
Buy/RFQ:
Part No:M39019/01-252S
Stock:4
Inv Date:06-08-2026
Price: Unit price: $740.39
Buy/RFQ:

AIRPAX / SENSATA M3901901252S 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 M3901901252S?

You can click on the BUY or RFQ button to purchase M3901901252S from an authorized AIRPAX / SENSATA distributor.

How do I troubleshoot issues or seek technical support for part M3901901252S?

You can download the M3901901252S datasheet or visit the AIRPAX / SENSATA website for support.

Who is the manufacturer of M3901901252S?

AIRPAX / SENSATA

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