Sierra CB50590 Resettable Circuit Breaker 150 Amp Surface Mount

The Sierra CB50590 is a heavy-duty 150 amp resettable circuit breaker designed for marine electrical systems. This surface-mount breaker provides reliable overcurrent protection while offering the convenience of manual reset functionality, eliminating the need for fuse replacement.

Key Features:

• 150 amp capacity for high-current marine applications
• 1/4" stainless steel studs on face for secure, corrosion-resistant mounting
• Connected terminal boots for enhanced safety and weather protection
• Dual-function design serves as both switch and circuit protection
• Trip-free safety feature prevents switch from being held in 'ON' position during overload
• Ignition protected design certified for safe use in below-deck boat installations
• Resettable mechanism allows quick service restoration after tripping
• Surface mount configuration for easy installation and accessibility

This circuit breaker is ideal for protecting battery banks, inverters, windlasses, bow thrusters, and other high-amperage marine electrical equipment. The trip-free mechanism ensures that even if the toggle is manually held in the on position, the breaker will still trip during an overcurrent condition, providing critical safety protection. The ignition-protected design meets marine safety standards for installation in engine rooms and other hazardous locations where fuel vapors may be present.