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AIRPAX / SENSATA M3901903221 Magnetic Circuit Breaker

The AIRPAX / SENSATA M39019/03-221 is a robust magnetic circuit breaker designed for critical applications requiring reliable circuit protection. This low-power, sealed, trip-free two-pole breaker features a compact design and is suitable for use in military and industrial equipment. It offers a maximum voltage rating of 50V DC and 240V AC at frequencies of 60 Hz and 400 Hz, ensuring versatility across different power systems. The breaker's trip-free mechanism enhances safety by preventing sustained overcurrent conditions. Its construction meets stringent MIL-PRF-39019 standards, guaranteeing consistent performance and durability.

Authorized Distributors
Source:DigiKey
Part No:M39019/03-221
Stock:0
Inv Date:06-09-2026
Price: Unit price: $1530.24
Buy/RFQ:
Part No:M39019/03-221
Stock:0
Inv Date:06-10-2026
Price: Unit price: $1530.23
Buy/RFQ:
Part No:M39019/03-221
Stock:0
Inv Date:06-09-2026
Price: Unit price: $1560.83
Buy/RFQ:
Part No:M39019/03-221
Stock:5
Inv Date:06-09-2026
Price: Unit price: $1171.05
Buy/RFQ:
Part No:M39019/03-221
Stock:5
Inv Date:06-09-2026
Price: Unit price: $1171.05
Buy/RFQ:

AIRPAX / SENSATA M3901903221 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 100 grams
  • pin: M39019/03-(dash number taken from table I)
  • tolerance: ±.031 (0.79 mm)
  • hex_mounting_nut_thread: .375-32 UNEF-2B
  • internal_tooth_lockwasher_od: .507/.493
  • internal_tooth_lockwasher_id: .392/.382
  • effective_bushing_thread_length: .280 (7.11 mm) minimum

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Frequently Asked Questions

Where can I buy AIRPAX / SENSATA M3901903221?

You can click on the BUY or RFQ button to purchase M3901903221 from an authorized AIRPAX / SENSATA distributor.

How do I troubleshoot issues or seek technical support for part M3901903221?

You can download the M3901903221 datasheet or visit the AIRPAX / SENSATA website for support.

Who is the manufacturer of M3901903221?

AIRPAX / SENSATA

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