Blue Sea ST CLB Block Jumper Pack of 5

The Blue Sea ST CLB Block Jumper Pack of 5 is an essential electrical connectivity solution designed for marine, automotive, and industrial applications where reliable power distribution is critical. These compact jumpers facilitate secure connections between battery terminals and distribution blocks, eliminating loose or corroded connections that compromise system performance. Engineered for professionals and enthusiasts who demand dependable power management in harsh environments, this five-piece pack delivers the redundancy needed for critical installations.

Blue Sea's block jumper design features precision-molded construction with secure terminal engagement, ensuring zero-play connections that resist vibration and environmental stress. The ST CLB configuration optimizes current flow while minimizing voltage drop across the connection point, critical for systems powering navigation electronics, bilge pumps, and engine start circuits. Weighing just 0.03 lbs per unit, each jumper combines lightweight engineering with robust copper or tin-plated terminals that resist oxidation and saltwater corrosion—a necessity for marine-grade reliability.

This pack is ideal for boat builders, RV system integrators, and technicians upgrading or repairing battery distribution networks where component failure is not an option. The five-piece quantity accommodates multi-block setups or provides spares for backup systems, reducing downtime in remote or offshore environments. Compatible with standard Blue Sea battery and distribution blocks, these jumpers install directly without modification and perform across temperatures from -20°F to +130°F, making them suitable for both polar and tropical operations.