Advanced Circuit Breakers

You need it ? We have it !

Crouzet proudly holds the World’s Widest Offer of Circuit Breakers
in compliance with the top Aerospace market standards

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All Crouzet circuit breakers families and boxes

Electromechanical

Circuit breakers

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Smart

Circuit breakers

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Remote control

Circuit breakers

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Power Distribution

Boxes

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The world's widest offer of
circuit breakers in compliance
with top standards.

Specialist in Electrical Protection Devices,
our products are involved in advanced
electrical equipment onboard aircrafts and
helicopters.
Our expertise in innovative technologies and our
compliance with industry standards
have given us the reputation of top
player in the aerospace industry.

Standards :

Aerospace industry leaders choose CROUZET electrical protection components :

60 millions parts delivered worldwide every year

The world's widest circuit breakers offer

80+ programs as a trusted partner

60+ years of experience

A Global Presence

Get to know the full offer

Electromechanical

Electromechanical Circuit Breakers (CB) with several different terminals (FASTON, EN, MIL...) and accessories.

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60+ years of aerospace qualification expertise.
Design and adaptation agility at your service : we can answer your specific needs by offering you the best customised solution, a long term partnership commitment and a multidisciplinary team dedicated to your program

		Regular Single pole	Regular Three pole	High-power Single pole	High-power Three pole
Standard	Mil Spec	MS3320 \| MS5692 \| MS26574 (AS33O1) (AS5692) (AS26574)	MS5692 \| MS14154 (AS5692) (AS14154)
	Asd-Stan	EN2495 \| EN2995 \| EN3773	EN2592 \| EN2996 \| EN3774	EN2794 \| EN3661	EN2665 \| EN3662
	din-bundeswehr	VG95345-TEIL6 VG95345-TEIL11
	BACC alternate	BACC18AD	BACC18AC	BACC18X \| BACC18R	BACC18AE \| 10-60806-10

Expand table

Configurations	Rating	0.5A - 30A	0.5A - 30A	15A - 60A	15A - 60A
	Auxiliary contact With polarized AC With non polarized AC Without AC
	Power terminal Standard 45° or 65° (Bus bar application) Push-Fit (0.25inch TAB) Flying leads
	Button length Normal length Extra length
	Actuation type Push pull Push push
	Threaded Barrel M12-0.75 M12-100 7/16 Canonical Barrel
	Terminal Screw 8-32 UNC 6-32 UNC M4 No Terminal Screws
	Vibration level Commercial Aircraft Fighter - Artillery Gun
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Smart

Arc Fault and Ground Fault Protection
Avoid drilling into the fuel tank by drastically reducing the amount of energy released by a fault as requested by AC25981

60+ years of aerospace qualification expertise
e.g. We have qualified these products by the Federal Aviation Administration with a Design Assurance Level B (DAL B)

	Arc fault Single pole	Arc fault Three pole	Arc fault + Groud fault Three pole
Standard	AS5692	AS5692	AS5692
Rating	3A - 5A - 7.5A - 10A 15A - 20A - 25A	3A - 5A - 7.5A - 10A 15A - 20A - 25A	3A - 5A - 7.5A - 10A 15A - 20A - 25A
threaded barrel	M12-100	M12-100	M12-100
Terminal screw	8-32 UNC	8-32 UNC	8-32 UNC
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Discover our Smart Circuit Breakers

Remote control

Discover our Remote Control Circuit Breakers
The RCCB merges a circuit breaker and a contactor function in one single case. Allowing you to open and close the contactor at a distance just by applying a 28 V command input.

Built to last
Our RCCBs can commute at least 100,000 times! i.e 50,000 flying cycles on a cargo doors application considering take-off and landing.

	Without Current Transformer	With current Transformer
Rating
35 A	84 354 335	84 354 435
50 A	84 354 350	84 354 450
60 A	84 354 360	84 354 450
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2 products in 1 case

Less wiring. Avoid the 10 to 20 cm of high-powering three-phase cables usually needed to connect these 2 products
Reduction of voltage drop to only 0,5 by reducing the number of contacts
Smaller size for a more efficient solution
Improved reliability
Strong internal protection against arcing thanks to it’s tungstane contacts
Power factor 0,7

Power distribution boxes

20+ Years Designing, Developing and Manufacturing
Certified Power Distribution Boxes
Same quality and reliability level of all our Electrical Protection families.

Built to last
Our RCCBs can commute at least 100,000 times!
i.e 50,000 flying cycles on a cargo doors application considering take-off and landing.

We offer :

Illuminated and non-illuminated Power Distribution Boxes
Push/Pull and Push/Push Versions
Wired and PCB-Faston
Versions

+ Standard Pre-qualified Equipement

Tested to harsh environment (temperature and vibrations)

Transfer to avionics of the CB status via RS422

Can be populated with most of the CB ratings you need

Taylor Made Solutions is on our DNA

Designed and tested according to :
Safety is always first :
We work accordingly to the best safety practices
- Failure mode effects analysis (FMEA)
- Mean Time Between Failures (MTBF)
- D.R.E.A.D. event calculation
Smaller size for a more efficient solution
Direct Maintenance Cost (DMC) accurately calculated

Why to use Crouzet Power Distribution Boxes ?

Light, Simple, Safe
Designed to be reused several times
Our intrinsic safety and trip free conception enable
a high level of safety
Temperature compensated
From -55°C to 121°C

What's new ?

MS 26574 With 45° bus bar terminals

Presenting A New Family Of
Circuit Breakers

Easy to install, Easy to replace!

The new MS 26574 stands out among the MS family
thanks to the shape of its terminals at 45°
allowing it to be installed on a bus bar.

> Check the Qualified Products Database

Technical information Product presentation (PDF)

60+ years of aerospace qualification expertise

"Design and adaptation agility at your service : we can answer your specific needs by offering you the best customised solution, a long term partnership commitment and a multidisciplinary team dedicated to your program"