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. 854-481
Mfr. Part No.1170-21-25A
BrandETA
$28.21
Each
units
25A 22mm 28V dc - - - - 1170 1
RS Stock No. 652-3420
Mfr. Part No.0700030
$16.614
Each (In a Pack of 5)
units
30A 6mm 32V dc 150 A 24mm 24 x 6 x 20.3mm 20.3mm TCP 30/DC32V 1
RS Stock No. 729-2748
Mfr. Part No.1616-21-30A
BrandETA
$25.13
Each
units
30A 6mm 32V dc - - - - - 1
RS Stock No. 723-4821
Mfr. Part No.1626-3H-10A
BrandETA
$19.05
Each
units
10A 7mm 29V dc - - - - - 1
RS Stock No. 729-2726
Mfr. Part No.1616-21-5A
BrandETA
$35.70
Each
units
5A 6mm 32V dc - - - - - 1
RS Stock No. 854-453
Mfr. Part No.1170-21-10A
BrandETA
$28.32
Each
units
10A 22mm 28V dc - - - - 1170 1
RS Stock No. 728-8698
Mfr. Part No.129-L11-H-KF-15A
BrandETA
$32.71
Each
units
15A 11.5mm - - - - - - 1
RS Stock No. 854-469
Mfr. Part No.1170-21-15A
BrandETA
$26.91
Each
units
15A 22mm 28V dc - - - - 1170 1
RS Stock No. 652-3385
Mfr. Part No.0700005
$20.58
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. 652-3408
Mfr. Part No.0700007
$14.798
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. 723-4825
Mfr. Part No.1626-3H-15A
BrandETA
$15.57
Each
units
15A 7mm 29V dc - - - - - 1
RS Stock No. 723-4819
Mfr. Part No.1626-3H-5A
BrandETA
$20.02
Each
units
5A 7mm 29V dc - - - - - 1
RS Stock No. 729-2745
Mfr. Part No.1616-21-25A
BrandETA
$21.60
Each
units
25A 6mm 32V dc - - - - - 1
RS Stock No. 723-4834
Mfr. Part No.1626-3H-20A
BrandETA
$18.66
Each
units
20A 7mm 29V dc - - - - - 1
RS Stock No. 729-2701
Mfr. Part No.129-L11-H-KF-25A
BrandETA
$32.71
Each
units
25A 11.5mm - - - - - - 1
RS Stock No. 854-475
Mfr. Part No.1170-21-20A
BrandETA
$29.20
Each
units
20A 22mm 28V dc - - - - 1170 1
RS Stock No. 652-3458
Mfr. Part No.0700015
$18.85
Each (In a Pack of 5)
units
15A 6mm 32V dc 150 A - - - TCP 15/DC32V 1
RS Stock No. 729-2736
Mfr. Part No.1616-21-20A
BrandETA
$22.55
Each
units
20A 6mm 32V dc - - - - - 1
RS Stock No. 854-431
Mfr. Part No.1170-21-6A
BrandETA
$31.54
Each
units
6A 22mm 28V dc - - - - 1170 1
RS Stock No. 652-3436
Mfr. Part No.0700010
$20.58
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
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