Littelfuse, Inc. Datasheets for Circuit Breakers

Circuit breakers are mechanical switching devices capable of breaking currents under specified abnormal circuit conditions.
Circuit Breakers: Learn more

Product Name Notes
Circuit breakers and fuses are a cost-effective solution to protecting wiring, equipment and subsystems. While fuses are a one-time, disposable solution, circuit breakers can be re-used after overload. Part number...
Designed to fit in a MINI blade fuse block or panel. Conforms to SAE J553. Cycles or continuously resets until the fault is corrected. Type I circuit breakers are typically...
Designed to fit in a MINI® Blade fuse block or panel. SAE Type II used primarily as a wiring harness protector in 12 volt DC automotive systems. Conforms to SAE...
Direct factory replacement for many domestic OEM applications. Designed to fit a MAXI™ Blade fuse block or panel. Available in either SAE Type I cycling or SAE Type II non-cycling...
Direct factory replacement for many domestic OEM vehicles. SAE Type I and Type II modified reset used primarily as a wiring harness protector in 12 volt DC automotive systems. Conforms...
Direct replacement for many OEM applications. Designed for glass fuses without physical alteration in the system. Fits 1 1/4" fuse clips. SAE Type II non-cycling used primarily as a wiring...
Direct replacement for many OEM applications. Designed for glass fuses without physical alteration in the system. Fits 1inch fuse clips. SAE Type II non-cycling used primarily as a wiring harness...
MINI® Circuit BreakersStandard Mini Footprint Circuit Breakers are designed to fit in a MINI® Blade fuse block or panel. SAE Type I used primarily as a wiring harness protector in...
MINI® Circuit BreakersStandard Mini Footprint Circuit Breakers are designed to fit in a MINI® Blade fuse block or panel. SAE Type II used primarily as a wiring harness protector in...
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...
The HCD auxiliary switch is designed as an accessory to a 3-pole contactor and used to switch an auxiliary load below 10 amperes.
These high amp circuit breakers are typically used in auxiliary and accessory circuits for trucks, buses,RVs and marine applications in battery charger systems and DC audio systems. All high amp...
These products function identically and have same internal components as OEM breakers but offer the versatility of snap off terminals for greater flexibility. SAE Type II modified reset used primarily...
This product is not recommended for new designs
This product is not recommended for new designsCircuit breakers and fuses are a cost-effective solution to protecting wiring, equipment and subsystems. While fuses are a one-time, disposable solution, circuit breakers...
This product is not recommended for new designsDesigned to fit in a MINI® Blade fuse block or panel. SAE Type II used primarily as a wiring harness protector in 12-Volt...
This product is not recommended for new designsDirect replacement for many OEM applications. Designed for glass fuses without physical alteration in the system. Fits 11 /4 fuse clips. SAE Type...
Universal Circuit Breakers function identically and have same internal components as OEM breakers but offer the versatility of snap off terminals for greater flexibility. SAE Type II modified reset used...