Box Style Circuit Breakers Series - Type I & III Automotive Circuit Breakers

Series: Box Style Circuit Breakers
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5.1.2
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Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

  • Steel or plastic housing.
  • Steel box type is approximately 1 ¼" x ¾" x 2/3"
  • Comes with integral brackets (to be directly affixed with screws or bolts) or without (needs a mounting bracket)
  • Breakers have 10-32 studs, blades or wire leads
  • Wire lead type has a 10" wire loop connected to studs and PVC-coated. Loop is intended to be cut, stripped and spliced into a circuit.

Product Literature

Access specifications, certifications, check availability and order parts below

Catalog #Current Rating (Max)Voltage Rating MaxInput TerminalsMounting MethodHousingStockSamplesCompare
30055-10-BX101210-32 studsBolt-DownPlated SteelCheckOrder
30055-15-BP151210-32 studsBolt-DownPlated SteelCheckOrder
30055-15-BX151210-32 studsBolt-DownPlated SteelCheckOrder
30055-20-BP201210-32 studsBolt-DownPlated SteelCheckOrder
30055-20-BX201210-32 studsBolt-DownPlated SteelCheckOrder
30055-25-BX251210-32 studsBolt-DownPlated SteelCheckOrder
30055-30-BP301210-32 studsBolt-DownPlated SteelCheckOrder
30055-30-BX301210-32 studsBolt-DownPlated SteelCheckOrder
30055-40-BP401210-32 studsBolt-DownPlated SteelCheckOrder
30055-40-BX401210-32 studsBolt-DownPlated SteelCheckOrder
30055-50-BP501210-32 studsBolt-DownPlated SteelCheckOrder
30055-50-BX501210-32 studsBolt-DownPlated SteelCheckOrder
30056-10-BX1210-32 studsSnap into BracketPlated SteelCheckOrder
30056-20-BX1210-32 studsSnap into BracketPlated SteelCheckOrder
30056-30-BX1210-32 studsSnap into BracketPlated SteelCheckOrder
30056-40-BX1210-32 studsSnap into BracketPlated SteelCheckOrder
30056-50-BX1210-32 studsSnap into BracketPlated SteelCheckOrder
30062-101210in wire loopBolt-DownPVC CoatedCheckOrder
30062-401210in wire loopBolt-DownPVC CoatedCheckOrder
30128-251210-32 studsBolt-DownPlated SteelCheck
30174-102410-32 studsBolt-DownPlated SteelCheckOrder
30174-152410-32 studsBolt-DownPlated SteelCheckOrder
30174-202410-32 studsBolt-DownPlated SteelCheckOrder
30423-101210-32 studsBolt-DownPlastic GreyCheckOrder
30427-151210-32 studsBolt-DownPlastic GreyCheck
30427-301210-32 studsBolt-DownPlastic GreyCheckOrder
30427-501210-32 studsBolt-DownPlastic GreyCheckOrder
30055-10101210-32 studsBolt-DownPlated SteelCheckOrder
30055-15151210-32 studsBolt-DownPlated SteelCheckOrder
30055-20201210-32 studsBolt-DownPlated SteelCheckOrder
30055-25251210-32 studsBolt-DownPlated SteelCheckOrder
30055-30301210-32 studsBolt-DownPlated SteelCheckOrder
30055-40401210-32 studsBolt-DownPlated SteelCheckOrder
30055-50501210-32 studsBolt-DownPlated SteelCheckOrder
30056-101210-32 studsSnap into BracketPlated SteelCheckOrder
30056-151210-32 studsSnap into BracketPlated SteelCheckOrder
30056-201210-32 studsSnap into BracketPlated SteelCheckOrder
30056-251210-32 studsSnap into BracketPlated SteelCheckOrder
30056-301210-32 studsSnap into BracketPlated SteelCheckOrder
30056-401210-32 studsSnap into BracketPlated SteelCheckOrder
30056-501210-32 studsSnap into BracketPlated SteelCheckOrder
30062-201210in wire loopBolt-DownPVC CoatedCheckOrder
30062-301210in wire loopBolt-DownPVC CoatedCheckOrder
30063-101210in wire loopSnap into BracketPVC CoatedCheckOrder
30063-201210in wire loopSnap into BracketPVC CoatedCheckOrder
30063-301210in wire loopSnap into BracketPVC CoatedCheckOrder
30128-101210-32 studsBolt-DownPlated SteelCheckOrder
30128-151210-32 studsBolt-DownPlated SteelCheckOrder
30128-201210-32 studsBolt-DownPlated SteelCheckOrder
30128-301210-32 studsBolt-DownPlated SteelCheckOrder
30128-401210-32 studsBolt-DownPlated SteelCheckOrder
30137-101210-32 studsSnap into BracketPlated SteelCheck
30137-151210-32 studsSnap into BracketPlated SteelCheckOrder
30137-201210-32 studsSnap into BracketPlated SteelCheckOrder
30137-301210-32 studsSnap into BracketPlated SteelCheckOrder
30138-101210-32 studsBolt-DownPlated SteelCheckOrder
30138-151210-32 studsBolt-DownPlated SteelCheck
30138-301210-32 studsBolt-DownPlated SteelCheckOrder
30138-401210-32 studsBolt-DownPlated SteelCheckOrder
30171-102410-32 studsSnap into BracketPlated SteelCheckOrder
30171-152410-32 studsSnap into BracketPlated SteelCheckOrder
30171-202410-32 studsSnap into BracketPlated SteelCheckOrder
30171-302410-32 studsSnap into BracketPlated SteelCheckOrder
30172-102410-32 studsBolt-DownPlated SteelCheckOrder
30172-152410-32 studsBolt-DownPlated SteelCheckOrder
30172-202410-32 studsBolt-DownPlated SteelCheck
30427-401210-32 studsBolt-DownPlastic GreyCheckOrder
30507-601210-32 studsBolt-DownPlated SteelCheckOrder
30507-801210-32 studsBolt-DownPlated SteelCheckOrder
3088-501210-32 studsBolt-DownPlated SteelCheckOrder
3088-601210-32 studsBolt-DownPlated SteelCheckOrder
30055-8
Obsolete: 2019 -07-04		1210-32 studsBolt-DownPlated Steel
30056-15-BX
Obsolete: 2022 -05-17		1210-32 studsSnap into BracketPlated Steel
30056-25-BX
Obsolete: 2021 -08-10		1210-32 studsSnap into BracketPlated Steel
30062-20-BX
Obsolete: 2021 -08-10
30062-30-BX
Obsolete: 2021 -12-06
30063-20-BX
Obsolete: 2021 -08-10		1210in wire loopSnap into BracketPVC Coated
30103-40
Obsolete: 2023 -12-19		1210-32 studsBolt-DownPlated Steel
30128-10-BX
Obsolete: 2021 -08-10		1210-32 studsBolt-DownPlated Steel
30128-15-BX
Obsolete: 2021 -12-06		1210-32 studsBolt-DownPlated Steel
30128-20-BX
Obsolete: 2021 -08-10		1210-32 studsBolt-DownPlated Steel
30128-30-BX
Obsolete: 2021 -08-10		1210-32 studsBolt-DownPlated Steel
30128-40-BX
Obsolete: 2021 -12-06		1210-32 studsBolt-DownPlated Steel
30137-15-BX
Obsolete: 2021 -08-10		1210-32 studsSnap into BracketPlated Steel
30137-20-BX
Obsolete: 2021 -08-10		1210-32 studsSnap into BracketPlated Steel
30138-30-BX
Obsolete: 2021 -08-10		1210-32 studsBolt-DownPlated Steel
30158-30
Obsolete: 2018 -04-20		1210-32 studsBolt-DownPlated Steel
30171-10-BX
Obsolete: 2022 -05-17		2410-32 studsSnap into BracketPlated Steel
30171-15-BX
Obsolete: 2021 -08-10		2410-32 studsSnap into BracketPlated Steel
30171-20-BX
Obsolete: 2021 -12-06		2410-32 studsSnap into BracketPlated Steel
30172-15-BX
Obsolete: 2021 -08-10		2410-32 studsBolt-DownPlated Steel
30172-20-BX
Obsolete: 2021 -08-10		2410-32 studsBolt-DownPlated Steel
30172-30-BX
Obsolete: 2021 -12-06		302410-32 studsBolt-DownPlated Steel
30181-15
Obsolete: 2021 -12-06		2410-32 studsBolt-DownPlated Steel
30181-40
Obsolete: 2021 -12-06		2410-32 studsBolt-DownPlated Steel
30504-10
Obsolete: 2020 -08-19		1210-32 studsBolt-DownPlated Steel
30504-20
Obsolete: 2020 -08-19		1210-32 studsBolt-DownPlated Steel
30504-25
Obsolete: 2020 -08-17		1210-32 studsBolt-DownPlated Steel
30504-30
Obsolete: 2020 -08-17		1210-32 studsBolt-DownPlated Steel
30507-60-BX
Obsolete: 2021 -12-06		1210-32 studsBolt-DownPlated Steel
3088-60-BX
Obsolete: 2021 -08-10		1210-32 studsBolt-DownPlated Steel
3088-80-BX
Obsolete: 2021 -08-10		1210-32 studsBolt-DownPlated Steel
30172-30
Obsolete: 2021 -12-06		302410-32 studsBolt-DownPlated Steel
3088-80
Obsolete: 2021 -05-28		1210-32 studsBolt-DownPlated Steel

pdficon Box Style Circuit Breakers Datasheet

Box Style Circuit Breakers Datasheet
pdficon 2D Print Guide

2D Print Guide
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
30055-10-BX CIR_BRKR 10A 12V MET BRK HWD #3 RoHS No PbFree No
30055-15-BX CIR_BRKR 15A 12V MET BRK HWD #3 RoHS No PbFree No
30055-20-BX CIR_BRKR 20A 12V MET BRK HWD #3 RoHS No PbFree No
30055-25-BX CIR_BRKR 25A 12V MET BRK HWD #3 RoHS No PbFree No
30055-30-BX CIR_BRKR 30A 12V MET BRK HWD #3 RoHS No PbFree No
30055-40-BX CIR_BRKR 40A 12V MET BRK HWD #3 RoHS No PbFree No
30055-50-BX CIR_BRKR 50A 12V MET BRK HWD #3 RoHS No PbFree No
30055-8 30055-8 RoHS No PbFree No
30056-10-BX CIR_BRKR 10A 12V MET HWD #3 RoHS No PbFree No
30056-15-BX CIR_BRKR 15A 12V MET HWD #3 RoHS No PbFree No
30056-20-BX CIR_BRKR 20A 12V MET HWD #3 RoHS No PbFree No
30056-25-BX CIR_BRKR 25A 12V MET HWD #3 RoHS No PbFree No
30056-30-BX CIR_BRKR 30A 12V MET HWD #3 RoHS No PbFree No
30056-40-BX CIR_BRKR 40A 12V MET HWD #3 RoHS No PbFree No
30056-50-BX CIR_BRKR 50A 12V MET HWD #3 RoHS No PbFree No
30062-10 CIR BRKR 10AMP RoHS No PbFree No
30062-40 CIR BRKR 40AMP RoHS No PbFree No
30062-20-BX CIR BRKR 20AMP #7 RoHS No PbFree No
30062-30-BX CIR BRKR 30AMP #12 RoHS No PbFree No
30063-20-BX CIR BRKR 20AMP #7 RoHS No PbFree No
30128-25 CIR_BRKR 25A 12V MET BRK HWD RoHS No PbFree No
30128-10-BX CIR_BRKR 10A 12V MET BRK HWD #3 RoHS No PbFree No
30128-15-BX CIR_BRKR 15A 12V MET BRK HWD #3 RoHS No PbFree No
30128-20-BX CIR_BRKR 20A 12V MET BRK HWD #3 RoHS No PbFree No
30128-30-BX CIR_BRKR 30A 12V MET BRK HWD #7 RoHS No PbFree No
30128-40-BX CIR_BRKR 40A 12V MET BRK HWD #3 RoHS No PbFree No
30137-15-BX CIR_BRKR 15A 12V MEL HWD HN11 #3 RoHS No PbFree No
30137-20-BX CIR_BRKR 20A 12V MEL HWD HN11 #3 RoHS No PbFree No
30138-30-BX CIR_BRKR 30A 12V MET BRK HN11 #7 RoHS No PbFree No
30171-10-BX CIR_BRKR 10A 24V MEL HWD #3 RoHS No PbFree No
30171-15-BX CIR_BRKR 15A 24V MEL HWD #3 RoHS No PbFree No
30171-20-BX CIR_BRKR 20A 24V MEL HWD #3 RoHS No PbFree No
30172-15-BX CIR_BRKR 15A 24V MEL BRK HWD #3 RoHS No PbFree No
30172-20-BX CIR_BRKR 20A 24V MEL BRK HWD #3 RoHS No PbFree No
30172-30-BX CIR_BRKR 30A 24V MEL BRK HWD #3 RoHS No PbFree No
30181-15 CIR_BRKR 15A 24V MEL T2 BRK RoHS No PbFree No
30181-40 CIR_BRKR 40A 24V MEL T2 BRK RoHS No PbFree No
30423-10 CIR_BRKR 10A 24V RESET HWD RoHS No PbFree No
30427-50 CIR_BRKR 50A 12V PL BRK AHW RoHS No PbFree No
30504-10 CIR_BRKR 10A 12V MET RoHS No PbFree No
30504-20 CIR_BRKR 20A 12V MET RoHS No PbFree No
30504-30 CIR_BRKR 30A 12V MET RoHS No PbFree No
30507-60-BX CIR BRKR 60AMP #3 RoHS No PbFree No
30055-10 CIR_BRKR 10A 12V MET BRK HWD RoHS No PbFree No
30055-15 CIR_BRKR 15A 12V MET BRK HWD RoHS No PbFree No
30055-20 CIR_BRKR 20A 12V MET BRK HWD RoHS No PbFree No
30055-25 CIR_BRKR 25A 12V MET BRK HWD RoHS No PbFree No
30055-30 CIR_BRKR 30A 12V MET BRK HWD RoHS No PbFree No
30055-40 CIR_BRKR 40A 12V MET BRK HWD RoHS No PbFree No
30055-50 CIR_BRKR 50A 12V MET BRK HWD RoHS No PbFree No
30056-10 CIR_BRKR 10A 12V MET HWD RoHS No PbFree No
30056-15 CIR_BRKR 15A 12V MET HWD RoHS No PbFree No
30056-20 CIR_BRKR 20A 12V MET HWD RoHS No PbFree No
30056-25 CIR_BRKR 25A 12V MET HWD RoHS No PbFree No
30056-30 CIR_BRKR 30A 12V MET HWD RoHS No PbFree No
30056-40 CIR_BRKR 40A 12V MET HWD RoHS No PbFree No
30056-50 CIR_BRKR 50A 12V MET HWD RoHS No PbFree No
30062-20 CIR BRKR 20AMP RoHS No PbFree No
30062-30 CIR BRKR 30AMP RoHS No PbFree No
30063-10 CIR BRKR 10AMP RoHS No PbFree No
30063-20 CIR BRKR 20AMP RoHS No PbFree No
30063-30 CIR BRKR 30AMP RoHS No PbFree No
30128-10 CIR_BRKR 10A 12V MET BRK HWD RoHS No PbFree No
30128-15 CIR_BRKR 15A 12V MET BRK HWD RoHS No PbFree No
30128-20 CIR_BRKR 20A 12V MET BRK HWD RoHS No PbFree No
30128-30 CIR_BRKR 30A 12V MET BRK HWD RoHS No PbFree No
30128-40 CIR_BRKR 40A 12V MET BRK HWD RoHS No PbFree No
30137-10 CIR_BRKR 10A 12V MEL HWD HN11 RoHS No PbFree No
30137-15 CIR_BRKR 15A 12V MEL HWD HN11 RoHS No PbFree No
30137-20 CIR_BRKR 20A 12V MEL HWD HN11 RoHS No PbFree No
30137-30 CIR_BRKR 30A 12V MEL HWD HN11 RoHS No PbFree No
30138-10 CIR_BRKR 10A 12V MET BRK HN11 RoHS No PbFree No
30138-15 CIR_BRKR 15A 12V MET BRK HN11 RoHS No PbFree No
30138-30 CIR_BRKR 30A 12V MET BRK HN11 RoHS No PbFree No
30138-40 CIR_BRKR 40A 12V MET BRK HN11 RoHS No PbFree No
30171-10 CIR_BRKR 10A 24V MEL HWD RoHS No PbFree No
30171-15 CIR_BRKR 15A 24V MEL HWD RoHS No PbFree No
30171-20 CIR_BRKR 20A 24V MEL HWD RoHS No PbFree No
30171-30 CIR_BRKR 30A 24V MEL HWD RoHS No PbFree No
30172-10 CIR_BRKR 10A 24V MEL BRK HWD RoHS No PbFree No
30172-15 CIR_BRKR 15A 24V MEL BRK HWD RoHS No PbFree No
30172-20 CIR_BRKR 20A 24V MEL BRK HWD RoHS No PbFree No
30172-30 CIR_BRKR 30A 24V MEL BRK HWD RoHS No PbFree No
30507-60 CIR BRKR 60AMP RoHS No PbFree No
30507-80 CIR BRKR 80AMP RoHS No PbFree No
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