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AIRPAX / SENSATA AP120 Magnetic Circuit Protector

The Airpax AP series magnetic circuit protectors combine power switching and accurate, reliable circuit protection with inverse time delays and trip-free features. Unlike thermal protectors, the AP maintains a consistent trip current regardless of temperature. Available in DC, 50/60Hz, or 400Hz versions, these protectors are suitable for communication, navigation, aircraft instrumentation, radar, and power supplies. The 'trip-free' action ensures the circuit won't remain closed during an overload. The AP12, a two-pole unit, provides protection for dual circuits with a single toggle handle, offering various combinations of ratings and delays. Multi-pole units feature a rugged three-point panel mount for enhanced shock and vibration resistance.

Authorized Distributors
Source:DigiKey
Part No:AP12-0
Stock:0
Inv Date:06-09-2026
Price: Unit price: $949.743
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Part No:AP12-0
Stock:0
Inv Date:06-10-2026
Price: Unit price: $949.74
Buy/RFQ:
Part No:AP12-0
Stock:0
Inv Date:06-09-2026
Price: Unit price: $1072.34
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Part No:AP12-0
Stock:40
Inv Date:06-09-2026
Price: Unit price: $1139.14
Buy/RFQ:
Part No:AP12-0
Stock:40
Inv Date:06-09-2026
Price: Unit price: $1139.14
Buy/RFQ:

AIRPAX / SENSATA AP120 Magnetic Circuit Protector Specifications:

  • Poles: 72
  • Configurations: 75
  • Operating Characteristics: 76
  • Delay Curves: 77
  • Specifications: 78
  • Decision Tables: 79
  • Waterproof Panel Integrity: O ring bushing seal and silicon rubber gland
  • Salt Spray Testing: MIL-STD-202, Method 101, Test Condition B
  • Typical Applications: Communication, navigation, aircraft instrumentation, radar, power supplies
  • UL Recognition: UP series
  • CSA Certification: UP series
  • FM Approval: UP series (petrochemical applications)
  • MIL-PRF: MIL-PRF-39019
  • Qualified Products Listing (QPL): MIL-PRF-39019/1 through 6
  • Cage Code: 81541
  • Panel Mounting Detail Hole Depth: .075 [1.91] min.
  • Maximum Panel Thickness: .156 [3.96]
  • Mounting Detail Threaded Inserts: 6-32 panel seal screws
  • Tolerance for Mtg: ±.005 [.13] Maximum
  • Dimensions in brackets: Millimeters
  • Angles: ±5° unless noted

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Frequently Asked Questions

Where can I buy AIRPAX / SENSATA AP120?

You can click on the BUY or RFQ button to purchase AP120 from an authorized AIRPAX / SENSATA distributor.

How do I troubleshoot issues or seek technical support for part AP120?

You can download the AP120 datasheet or visit the AIRPAX / SENSATA website for support.

Who is the manufacturer of AP120?

AIRPAX / SENSATA

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