Part# 11-03923
MFR Model# W23-X1A1G-1
P & B Part No.AMP
BeechCessnaPiperPart No.


These bi-metallic single pole breakers weigh less than 2 oz. and are especially suitable for homebuilt aircraft. Used as original equipment in Beech, Cessna and Piper aircraft. Maximum operating voltages: 32 VDC and 250 VAC (to 400 Hz).

Push/Pull Actuator Thermal Circuit Breaker
    0.5 amp to 50 amp ratings may be used as on/off switch
    Cannot be reset against overload
    W23 has visible trip indicator
    Screw termination
    Trip-free operation
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -


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These are excellent breakers and pricing is good here as well. I use quite a few of these for electric air conditioners (50A steady load) and they do the job well.

Plane C
April 27, 2021

This was a replacement for a defective breaker. Easy to connect and install. Works exactly as advertised. Now getting full voltage across both terminals - the reason for my voltage drop. Also arrived very promptly after order (within 3 days).

Geoff G
September 4, 2020

These breakers are exceptional, and received order quickly. I have gotten over 50 Breakers from Aircraft spruce and havent had any problems.

Tyler F
August 13, 2020

Best breakers in the market. Simple to use and pretty reasonable price

Marcos S
April 10, 2020

Timely delivery

March 7, 2020

Looks good.

February 13, 2020

Works great for me.

Oren R
October 28, 2019

These are great breakers and affordable pricing.

September 16, 2019

Exactly what I ordered

Steve R
August 19, 2018

Service was fantastic, ordered it Tuesday from Australia and it arrived Friday from you. Many thanks!!

Brendan B
April 29, 2018


Please note, Aircraft Spruce'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 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: What size are the screws on the rear connectors of the Tyco circuit breakers W23?

W23 series circuit breakers have 8-32 threaded screws on the terminals.

Q: Are the Tyco WS23 circuit breakers FAA PMA?

These breakers do not have FAA PMA approval on their own. Many certified aircraft have these breakers as OEM and thus are approved under the airframe approval as replacement parts. Please discuss with your A&P to see if these can be installed legally in your aircraft.

Q: Is there a minimum distance between breakers for panel mounting?

Typically the distance on premade Busbars is the best to follow. You can view 11-04676 as an example.

Q: Do these CBs have a warranty?

12 months from purchase date.

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