Overview

The Blue Sea Systems 4100 is a toggle guard that helps stop circuit breakers from being switched on or off by accident. It fits all A-Series single pole circuit breakers, fits panel switches, and mounts through the circuit breaker mounting screw hole.

This is a small but useful part on breaker panels where a switch can be bumped by a hand, gear bag, washdown hose, or movement at the helm. It also works on other circuit breaker panels that use standard toggle-type circuit breakers, so it can be used as a simple safeguard on a wide range of boat electrical panels.

Key features

• Helps prevent accidental switching of critical circuits on breaker panels
• Fits all Blue Sea Systems A-Series single pole circuit breakers
• Also fits panel switches for added flexibility during panel layout or retrofit work
• Can be used on circuit breaker panels from other brands that use standard toggle-type breakers
• Mounts using the circuit breaker mounting screw hole, so installation stays straightforward
• Includes 2 mounting screws

Installation and fit

The guard attaches at the breaker using the existing mounting screw location, which keeps the install simple when you are adding protection to an existing panel. On boats with exposed electrical panels, it gives added control over circuits that should not be switched by mistake during normal movement around the cabin or helm.

Before ordering, check that your panel uses a standard toggle-style breaker or switch and that the mounting area around the toggle has enough clearance for the guard. This matters most on tightly packed panels or older custom layouts.

Use on board

This guard makes the most sense on circuits that you want to keep from being knocked off or on during routine use, such as electronics, communications, or other panel-mounted systems. It is a sensible add-on for owners updating an existing breaker panel, riggers doing small electrical refinements, and anyone trying to reduce unintentional switching on board.

What's included

• Toggle guard
• 2 mounting screws