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AIRPAX / SENSATA M3901904321S Low-Power Sealed Circuit Breaker

The AIRPAX / SENSATA M39019/04-321S circuit breaker is a critical component in military and aerospace applications, providing reliable overcurrent protection. This low-power, sealed, trip-free two-pole circuit breaker is designed to meet stringent performance requirements. It incorporates auxiliary contacts for enhanced functionality and is available with various current ratings and time delay settings to suit diverse circuit protection needs. The device's robust construction and sealed design ensure operation in harsh environments, while the trip-free mechanism enhances safety and reliability.

Authorized Distributors
Source:DigiKey
Part No:M39019/04-321S
Stock:0
Inv Date:06-09-2026
Price: Unit price: $1947.51
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Part No:M39019/04-321S
Stock:0
Inv Date:06-10-2026
Price: Unit price: $1947.5
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Part No:M39019/04-321S
Stock:0
Inv Date:06-09-2026
Price: Unit price: $1986.45
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Part No:M39019/04-321S
Stock:2
Inv Date:06-09-2026
Price: Unit price: $1479.8
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Part No:M39019/04-321S
Stock:18
Inv Date:06-09-2026
Price: Unit price: $596.871
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Part No:M39019/04-321S
Stock:57
Inv Date:06-09-2026
Price: Unit price: $596.871
Buy/RFQ:
Part No:M39019/04-321S
Stock:2
Inv Date:06-09-2026
Price: Unit price: $1479.8
Buy/RFQ:

AIRPAX / SENSATA M3901904321S Low-Power Sealed Circuit Breaker Specifications:

  • Dimensions: 0.005-1.950 inches
  • Weight: Approximately 100 grams
  • Voltage Rating: 50 V dc, 240 V ac
  • Frequency Rating: 60 Hz, 400 Hz
  • High Inrush: 800 percent at 60 Hz and dc, 1,400 percent at 400 Hz
  • Current Rating: 0.05 - 12.5 amps
  • Time Delay: A, B, C options
  • Resistance: Varies based on dash number, see Table I
  • Mounting Hardware: Hex mounting nut .375-32 UNEF-2B thread
  • Terminals: Accommodates two number 20 AWG wires

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Frequently Asked Questions

Where can I buy AIRPAX / SENSATA M3901904321S?

You can click on the BUY or RFQ button to purchase M3901904321S from an authorized AIRPAX / SENSATA distributor.

How do I troubleshoot issues or seek technical support for part M3901904321S?

You can download the M3901904321S datasheet or visit the AIRPAX / SENSATA website for support.

Who is the manufacturer of M3901904321S?

AIRPAX / SENSATA

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