Blue Sea St Clb Push Button Circuit Breaker Block

The Blue Sea Systems ST/CLB push button circuit breaker block (SKU 661-5054) is a compact, snap-in-place DC distribution protection block designed for push-button resettable CLB breakers. It combines tin-plated copper bus connectivity and screw terminals with a clear insulating cover that supports square-format label recesses for compliant insulation.

Key Features

• Quick connect clips allow circuit breakers to snap easily into place.
• Tin-plated copper busses and screw terminals for reliable termination.
• Clear insulating cover with square format label recesses to meet ABYC/USCG insulation requirements.
• Easy-to-open cover clip for service access.
• Two breakouts for wire access.
• Accepts ring terminals.
• Optional push button waterproof boots or dress nuts can be installed over the cover.
• Maximum voltage: 32V DC.
• Maximum amperage ratings: 32A per circuit; 100A per block common source; 40A per jumped circuit group (independent source).

Intended Use

• 12V and 24V DC marine electrical distribution (inboard/outboard, RV, and industrial DC systems where CLB push-button resettable breakers are used).
• DC circuit protection and convenient breaker installation in switch/breaker panels and similar distribution layouts.

Product Details

• Brand/Line: Blue Sea Systems ST/CLB push button circuit breaker block.
• SKU: 661-5054.
• Circuit positions: 12.
• Mounting/terminal interface (as applicable to this ST CLB block family): #8 screw (M4) or #8 nut mounting; screw terminals accept #8-32 screws with captive star lock washer (per Blue Sea ST CLB specifications).
• Power ratings: Maximum voltage 32V DC.
• Current ratings: 32A per circuit; 100A per block common source; 40A per jumped circuit group (independent source).
• Bus/interface: Negative bus uses a #10-32 stud; positive bus uses a #10-32 stud (per Blue Sea ST CLB specifications).
• Cover/labeling: Clear insulating cover with square format label recesses; supports ABYC/USCG insulation requirements.
• Service/use: Easy-to-open cover clip; optional waterproof boots or dress nuts can be installed over the cover; designed to use CLB push button reset-only circuit breakers with quick-connect terminals.

Parts Desk Insights

Best Use Case: Great choice when you want a neat, serviceable DC breaker layout using CLB push-button resettable breakersespecially where you need quick snap-in breaker installation and an insulating, labelable cover.

Common Issues: During installation, verify youre using the correct ring-terminal size for the screw terminal hardware and that wires are routed through the provided breakouts cleanly. Also confirm the cover/label recess plan matches your final labeling method so insulation requirements remain satisfied after wiring is complete.

Related Products & Accessories

• Blue Sea CLB Push Button Reset Only Circuit Breaker (Quick Connect) – Pairing this ST/CLB circuit breaker block with the correct CLB push-button reset-only quick-connect breakers completes the protected circuit positions.