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Home / Electrical / Circuit Breakers / Push-Pull / MS3320 / MS25244 /7274-2-3 Circuit Breakers
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7274-2-3 Circuit Breakers

11 Reviews 2 Answered Questions
$42.50/Each
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Part# 11-08356
MFR Model# 7274-2-3

Overview

7274 series are small, lightweight, low amperage devices that are specifically designed to protect aircraft/aerospace cable and components in airborne vehicles and equipment.

Trip–Free
The 7274 features a trip–free, indicating reset button and is available in standard ratings from ˝ to 20 amps.

Wiping Action
A "wiping action" contact design assures low voltage drop, faster trip time and high reliability in low voltage applications. They are available in standard ratings from ˝ to 20 amps.

Water Resistant Panel
A water resistant panel seal designed to fit over the push button actuator is available for applications that require this type of protection.

Features

  • Uses minimum space
  • Light weight
  • Trip–free
  • MIL-C-5809 qualified
  • Current rating: 3 amp
  • Low amp
  • High vibration resistance
  • Typical use: Military airborne vehicle and equipment protection

Specifications

  • Amp: 3
  • MS#: MS26574-3
  • Vibration: 10G minimum, 50–500 Hz (other vibration levels available)
  • Mechanical Shock: 35G
  • Acceleration: 10G
  • Weight: 7274-2 (MS 26574): 28 grams maximum; 7274-4 (MS 26574 A): 28 grams maximum; 7274-11 (MS 22073): 33 grams maximum; 7274-69 (MS 22073V): 33 grams; 7274-70 (MS 26474L): 33 grams
  • Interrupt Current: 0.50–5 amps: unlimited at 28 VDC; 7.50–15 amps: 2,000 amps at 28 VDC; 0.50–1.50 amps: unlimited at 120 VAC, 400 Hz; 2–5 amps: 800 amps at 120 VAC, 400 Hz; 7.50–20 amps: 500 amps at 120 VAC, 400 Hz
  • Endurance: 2,500 cycles: 120 VAC, 400 Hz inductive; 5,000 cycles: 120 VAC, 400 Hz resistive; 2,500 cycles: 30 VDC inductive; 5,000 cycles: 30 VDC resistive; 10,000 cycles: Mechanical, no load
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Reviews

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experience is good

M S Verified Purchase

Circuit Breaker 7274-2-3
May 12, 2024

Direct F Verified Purchase

Circuit Breaker 7274-2-3
March 21, 2023

Thiebaud M Verified Purchase

Circuit Breaker 7274-2-3
March 19, 2023

Nice and reliable item !

Bjorn T Verified Purchase

Circuit Breaker 7274-2-3
January 25, 2023

Works great for the price

William E Verified Purchase

Circuit Breaker 7274-2-3
June 20, 2022

Magaero L Verified Purchase

Circuit Breaker 7274-2-3
May 24, 2022

Joseph H Verified Purchase

Circuit Breaker 7274-2-3
May 5, 2022

These are great. Only downside is the slightly inefficient angle of the line and load BUT you can tweak them if needed, and I needed to. They are very small and take up minimal real estate, however, if you are looking for the ultimate in maximizing battery life: consider others. Klixon breakers are great - dont get me wrong - but you will see a slightly voltage dip using these breakers, as they have a slightly high resistance. If I recall, about 0.3v is expected.

Jason L Verified Purchase

Circuit Breaker 7274-2-3
February 1, 2022

Thierry H Verified Purchase

Circuit Breaker 7274-2-3
September 12, 2021

Good quality breaker with a small footprint, solid connection. Have bought a number of these in various amperages. Been flying on my plane for about a year. No problems.

Tom D
April 26, 2021

Q&A

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Please note, Aircraft Spruce Canada's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce Canada assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Which contact is the line side, and which is the load side?

The line side is on the keyway washer side.

Q: Do the 7274 series have a white color on the button shaft that shows when it is tripped?

Yes when tripped the button shaft is white.

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