Thermal Automotive Circuit Breakers

Thermal automotive circuit breakers are devices used to break the flow of current in automotive circuits, in order to protect them against a fault such as overcurrent or short circuit.

The thermal aspect of this type of circuit breaker allows for smaller overcurrents over a longer period of time, but will quickly trip the circuit for larger overcurrents. This is useful in the case of motors, as there will be a small overcurrent each time the engine is switched on for a short length of time, which should not trip the circuit.

What are thermal automotive circuit breakers used for?

Thermal automotive circuit breakers are used to protect electrical networks in most types of vehicles, including cars, vans, buses, and boats.

Types of thermal automotive circuit breakers

Thermal automotive circuit breakers all function in the same way, but they can differ according to a number of different characteristics. They can have varying current and voltage ratings, width dimensions, and numbers of poles.


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Description Price Current Rating Width Voltage Rating Breaking Capacity at Maximum Voltage Rating Overall Depth Overall Dimensions Overall Length Series Number of Poles
RS Stock No. 723-4821
Mfr. Part No.1626-3H-10A
BrandETA
TWD364.00
Each
units
10A 7mm 29V dc - - - - - 1
RS Stock No. 723-4825
Mfr. Part No.1626-3H-15A
BrandETA
TWD391.00
Each
units
15A 7mm 29V dc - - - - - 1
RS Stock No. 729-2732
Mfr. Part No.1616-21-15A
BrandETA
TWD513.00
Each
units
15A 6mm 32V dc - - - - - 1
RS Stock No. 652-3385
Mfr. Part No.0700005
TWD495.60
Each (In a Pack of 5)
units
5A 6mm 32V dc 150 A 24mm 24 x 6 x 20.3mm 20.3mm TCP5/DC32V 1
RS Stock No. 728-8698
Mfr. Part No.129-L11-H-KF-15A
BrandETA
TWD1,241.00
Each
units
15A 11.5mm - - - - - - 1
RS Stock No. 854-431
Mfr. Part No.1170-21-6A
BrandETA
TWD485.00
Each
units
6A 22mm 28V dc - - - - 1170 1
RS Stock No. 723-4828
Mfr. Part No.1626-3H-7.5A
BrandETA
TWD382.00
Each
units
7.5A 7mm 29V dc - - - - - 1
RS Stock No. 652-3414
Mfr. Part No.0700020
TWD431.80
Each (In a Pack of 5)
units
20A 6mm 32V dc 150 A 24mm 24 x 6 x 20.3mm 20.3mm TCP 20/DC32V 1
RS Stock No. 729-2736
Mfr. Part No.1616-21-20A
BrandETA
TWD513.00
Each
units
20A 6mm 32V dc - - - - - 1
RS Stock No. 728-8695
Mfr. Part No.129-L11-H-KF-8A
BrandETA
TWD754.00
Each
units
8A 11.5mm - - - - - - 1
RS Stock No. 851-1959
Mfr. Part No.CB181P-110
TWD4,327.00
Each
units
110A - 30V - - - - - 1
RS Stock No. 723-4819
Mfr. Part No.1626-3H-5A
BrandETA
TWD364.00
Each
units
5A 7mm 29V dc - - - - - 1
RS Stock No. 723-4831
Mfr. Part No.1626-3H-30A
BrandETA
TWD364.00
Each
units
30A 7mm 29V dc - - - - - 1
RS Stock No. 652-3442
Mfr. Part No.0700025
TWD464.60
Each (In a Pack of 5)
units
25A 6mm 32V dc 150 A 24mm 24 x 6 x 20.3mm 20.3mm TCP 25/DC32V 1
RS Stock No. 729-2739
Mfr. Part No.1616-21-10A
BrandETA
TWD513.00
Each
units
10A 6mm 32V dc - - - - - 1
RS Stock No. 728-8692
Mfr. Part No.129-L11-H-KF-16A
BrandETA
TWD754.00
Each
units
16A 11.5mm - - - - - - 1
RS Stock No. 652-3408
Mfr. Part No.0700007
TWD498.20
Each (In a Pack of 5)
units
7.5A 6mm 32V dc 150 A 24mm 24 x 6 x 20.3mm 20.3mm TCP7.5/DC32V 1
RS Stock No. 729-2748
Mfr. Part No.1616-21-30A
BrandETA
TWD539.00
Each
units
30A 6mm 32V dc - - - - - 1
RS Stock No. 854-481
Mfr. Part No.1170-21-25A
BrandETA
TWD510.00
Each
units
25A 22mm 28V dc - - - - 1170 1
RS Stock No. 652-3436
Mfr. Part No.0700010
TWD431.80
Each (In a Pack of 5)
units
10A 6mm 32V dc 150 A 24mm 24 x 6 x 20.3mm 20.3mm TCP 10/DC32V 1