Automatic 30A 40A 50A 60A 70A 80A 100A 120A 150A 200A 250A 300A AMP Circuit Breaker Fuse with Manual Reset DC 12-42V Car Marine Boat Yacht RV Auto Power Protect Fuse Holder Protection Feature: High current thermal trip circuit breaker with manual reset switch for auxiliary DC electrical systems. Ideal for use in harsh environments such as racing cars to provide protection against current overloads or short circuits. A protective rubber cap prevents unwanted short circuits. Switchable surface mount circuit breakers are commonly used in auxiliary and acceory circuits for truck, bus, RV and marine systems. Sealed waterproofing is available in the engine compartment and bilge area. A manual trip switch can quickly disconnect the circuit in an emergency. Attachment Stud Dimensions - M6 x 2 - Nuts come with integral lock washers to prevent loosening due to vibration. Specification: Name: Fuse circuit protector Circuit ratings: 30A, 40A, 50A, 60A, 70A, 80A, 100A, 120A, 150A, 200A, 250A, 300A (optional) Rated voltage: 12-42V DC Interruption Rating: 30V DC Operating temperature: 3000A 32C to 82C Storage temperature: -34C - 149C Number of poles: 2 Colour: Black Product weight: 86g Mounting Hole (Stud) Dimensions: 6mm/1/4"-28 threads/inch Dimensions: 74x49x44mm/2.91"x1.92"x1.73" Applicable: RV, yacht, agricultural vehicle, camper, etc. Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. 1* circuit breaker DC 12-42V Automatic Circuit Breaker Fuse Reset for Car Marine Boat Yacht RV