Blue Sea Systems ST CLB Circuit Breaker Blocks provide flexible, resettable circuit protection for multiple independent circuits in a compact, surface-mount block. Designed to make breakers as easy to install as fuses, these blocks use the snap-in-place compact CLB resettable circuit breakers. With tin-plated copper busses, screw terminals, and clear insulating covers with label recesses, they meet ABYC/USCG insulation standards. These blocks allow easy wire access, accept ring terminals, and can be equipped with push button waterproof boots or dress nuts for extra protection. The ST CLB block is an ideal companion to waterproof switch panels like the WD Switch Only Panel for marine environments.
Key Features
Quick connect clips for easy snap-in installation of circuit breakers
Tin-plated copper busses and screw terminals for reliable conductivity
Clear insulating cover with label recesses meeting ABYC/USCG requirements
Easy open clip-on cover with breakouts for two-direction wire access
Accepts ring terminals and square labels for circuit identification
Optional push button waterproof boots or dress nuts compatible
Surface mount design intended for dry, protected locations
Compatible with waterproof switching panels for integrated protection
Offers resettable circuit protection for up to 6 or 12 independent circuits
Specifications Comparison
Feature
5050-BSS (6 Circuits)
5051-BSS (12 Circuits)
Circuits
6
12
Maximum Amperage per Circuit
32 A
32 A
Maximum Amperage (Jumped Circuit Group)
40 A
40 A
Maximum Voltage
32 V DC
32 V DC
Source
Independent Source
Independent Source
Mounting Centers
5.63 in (143 mm)
10.13 in (257.3 mm)
What’s in the Box
ST CLB Circuit Breaker Block (6 or 12-circuit model)