The World Depends on Sensors and Controls
Commercial Breakers:
    Circuit Breaker
1–35 Amp
2EP Series
    Circuit Breaker
2–40 Amp
C Series
    Circuit Breaker
12.5–60 Amp
7851, 7854
    Circuit Breakers
35–150 Amp
F Series
    Circuit Breakers
35–150 Amp
    Circuit Breaker
35–150 Amp
S Series
    Circuit Breaker
Precision Breakers:
    Circuit Breaker
2–35 Amp
PS series
    Circuit Breaker
2–40 Amp
Small Frame P
    Circuit Breakers
    Circuit Breaker
35–150 Amp
Large Frame P
  Contacts / Distributors

Site Updated February 16, 2018

* * * Sensata > Products > Klixon Brand > Circuit Breakers > Thermal >

Klixon® C Series Thermal Circuit Breakers
2 to 40 Amp, Commercial, Ignition Protected

Overview Data Sheet (PDF) Request Pricing or Info

2 - 40 amps
Commercial thermal circuit breaker
Ignition protected

The C series is available in four configurations:
CA: Open construction, automatic reset
CDA: Sealed construction, automatic reset
CM: Open construction, manual reset
CDM: Sealed construction, manual reset

Using a bimetal, snap–acting disc as the sensing and actuating element, the Klixon C Series thermal circuit breaker provides trouble free over–current protection for harsh environments.


Accessory and equipment protection for heavy trucks, buses, construction equipment, off–road vehicles, RV’s
Battery protection in electric vehicles

General Envelope Dimensions
Nominal dimensions provided for reference only.

Side View of CA, CM and CDA, CDM (pushbutton omitted on CA and CDA automatic reset versions):


Bottom View of CA, CM, CDA, CDM (2–10 Amp configuration):

C series breaker
* * *
Thermal Circuit Breakers

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Trip Curve
Approximate Time — Current Characteristics at 77°F (25°C)

Trip Curve Diagram

Dotted Lines: CA, CM, CDA, CDM series (10 Amps and below)
Solid Lines: CA, CM, CDA, CDM series

Derating Curve
Approximate Effect of Ambient Temperature on Ultimate Trip

Diagram: Approximate effect of ambient temperature on ultimate trip
Performance characteristics are based on room temperature (77°F). Consult derating curve at left for ambient temperatures significantly higher or lower than standard room temperature.

Example: At 77°F the device is calibrated to hold at 100% of rated current (1) and trip at 135% of rated current (2). At 140°F, the same device will hold at approximately 78% of rated current (3), and trip at approximately 115% of rated current (4).
The World Depends on Sensors and Controls
The World Depends on Sensors and Controls