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Automotive Breakers:
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EXT 500 Type 1
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EXT 300 series
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EXT 200 Type 2
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Maxi Breaker® series
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Site Updated June 13, 2016

* * * Sensata > Products > Circuit Breakers > Automotive >Maxi Breaker®

Automotive Circuit Breakers
Maxi Breaker® Series


Overview Data Sheet (PDF)  

Available in SAE Type 1 (cycling) and SAE Type 2 (non-cycling)
Multiple bimetallic resistivities available
Heater wire wrapped around the bimetal keeps the protector open until power is removed (Type 2 only)


The MAXI BREAKER® series of circuit protectors are rated for use up to 125ºC. This patented device is available both as a cycling (SAE Type 1) and non-cycling (SAE Type 2) device. Typical placement of the MAXI BREAKER® is under the hood fuse blocks or other areas of the vehicle that house a MAXI™ Blade Fuse*. The MAXI BREAKER® protects against momentary overloads and eliminates the need for fuse replacement.



General Envelope Dimensions, mm (inches)
Nominal dimensions provided for reference only.


CA, CM and CDA, CDM

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Thermal Circuit Breakers


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Peerless Electronics Inc.
700 Hicksville Road
Suite 100
Bethpage NY 11714
Phone: 516-594-3500
Phone: 800-285-2121
Fax: 516-593-2179



Trip Curve

Diagram: Approximate effect of ambient temperature on ultimate trip
Diagram: Approximate effect of ambient temperature on ultimate trip
General Specifications
Nominal Operating Voltage
14 Volts DC
Typical voltage drop at operating current
200 mV max
Current Rating
10 to 50 amps @ 25ºC (in 5 amp increments)
Typical ambient temperature range
-40ºC to 125ºC


These curves are to be used only as a guide in selecting a protector for a particular application. Factors such as distance from the heat source and the method of mounting should be considered in selecting a protector. Final trip times are dependent upon terminal configuration and mounting in the application.

All Sensata Circuit Breakers do not contain any hazardous materials and are 100% in compliance with the Substance of Concern (SoC), ELV and RoHS directives.

The World Depends on Sensors and Controls
The World Depends on Sensors and Controls