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AIRPAX / SENSATA M3901901243 Magnetic Circuit Breaker

The AIRPAX / SENSATA M39019/01-243 is a low-power, sealed, trip-free, one-pole magnetic 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's sealed construction ensures 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 magnetic mechanism for quick and reliable tripping, preventing damage to connected circuits. Dimensions vary based on dash number, with metric equivalents provided for general information. Mounting hardware includes a hex nut and lockwasher.

Authorized Distributors
Source:DigiKey
Part No:M39019/01-243
Stock:2
Inv Date:06-09-2026
Price: Unit price: $1035.49
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Part No:M39019/01-243
Stock:0
Inv Date:06-10-2026
Price: Unit price: $850.62
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Part No:M39019/01-243
Stock:0
Inv Date:06-09-2026
Price: Unit price: $1067.26
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Part No:M39019/01-243
Stock:2
Inv Date:06-09-2026
Price: Unit price: $803.44
Buy/RFQ:
Part No:M39019/01-243
Stock:2
Inv Date:06-09-2026
Price: Unit price: $803.44
Buy/RFQ:

AIRPAX / SENSATA M3901901243 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 M3901901243?

You can click on the BUY or RFQ button to purchase M3901901243 from an authorized AIRPAX / SENSATA distributor.

How do I troubleshoot issues or seek technical support for part M3901901243?

You can download the M3901901243 datasheet or visit the AIRPAX / SENSATA website for support.

Who is the manufacturer of M3901901243?

AIRPAX / SENSATA

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