ST CLB 12-Circuit Independent Source Circuit Breaker Block with Negative Bus (5054) by Blue Sea Systems. The advantage of a resettable circuit breaker over a fuse is well known however people find circuit breakers more expensive and difficult to install. The ST CLB Circuit Breaker Block solves this issue by using the compact, snap-in-place CLB resettable circuit breaker which makes breakers as easy to install as a fuse. This product is professionally and meticulously designed to provide superior durability you are looking for. The does not accept compromises when it is going about quality, so you can be completely confident that this product is second to none. It is manufactured from first-rate materials to ensure outstanding reliability. This product provides efficient and worry-free service for many years ahead which makes it the perfect option for your ultimate satisfaction. FeaturesQuick connect clips allow circuit breakers to snap easily into placeTin-plated copper busses and screw terminalsClear insulating cover with square format label recesses, satisfies ABYC/USCG insulation requirementsEasy to open clip on coverBreakouts allow wire access in two directionsAccepts ring terminalsOptional push button waterproof boots or dress nuts can be installed over coverAccepts square labelsSpecificationsCircuits: 12Maximum Amperage: 100A (per block), 32A (per circuit)Maximum Voltage: 32V DCMounting: #8 Screw (M4) or #8 NutNegative Bus: #10-32 StudPositive Bus: #10-32 StudSource: Common SourceMinimum Operating Temperature: -10degrees CMaximum Operating Temperature: 60degrees CMounting Center: 10.13'' (257.3 mm)Screw Terminal Type: #8-32 Screws with Captive Star Lock WasherHeight: 11.19''Weight: 1.5 lbs