Blue Sea Systems C-Series White Toggle Circuit Breaker, Double Pole, DC, 65V DC Max, Magnetic Hydraulic, Trip-Free

Overview

The Blue Sea Systems C-Series Toggle Circuit Breaker is a double-pole magnetic hydraulic breaker for high-amp marine circuits that need switching and overcurrent protection in one panel-mounted device. This white toggle breaker family is offered in 150A, 175A, and 200A DC versions, with a maximum rating of 65V DC and 120V AC or 240V AC.

It is commonly used on heavy DC loads such as inverters, bow thrusters, and windlasses, where the breaker must handle serious current while remaining accessible at the electrical panel. The trip-free mechanism means the toggle cannot be held closed after a fault trip, which is an important safeguard when troubleshooting high-load circuits on board.

Key features

• Double-pole C-Series toggle breaker for high-amp DC circuit protection and switching.
• Magnetic hydraulic, trip-free construction so the breaker cannot be forced closed after a trip.
• Rated up to 65V DC, with 120V AC and 240V AC maximum voltage ratings also specified for the series.
• 5000A interrupt capacity at 65V DC for demanding marine electrical systems.
• White toggle actuator and 2-pole layout for clean panel integration.
• 1/4-20 tin-plated brass terminal studs with 35 in-lb terminal stud torque.
• Paralleled poles with a 5/16 inch stud on the bus for the high-amperage configuration.
• Operating temperature range from -40° C to 85° C for use in exposed electrical spaces, engine room areas, and other demanding onboard locations.

Variants

This C-Series double-pole toggle breaker is offered in multiple amperage configurations so the breaker rating can match the protected circuit.

The amperage changes by variant. The verified shared details across the range include the white toggle actuator, 2-pole layout, magnetic hydraulic trip-free breaker type, 65V DC maximum rating, 1/4-20 tin-plated brass terminal studs, #6-32 stainless steel mounting screws, 5000A interrupt capacity at 65V DC, and -40° C to 85° C operating temperature range.

• 7269: Amperage 200A. This is the highest-amperage option in this group for circuits specified around a 200A breaker.
• 7267: Amperage 150A. This version fits installations where the circuit protection plan calls for a 150A double-pole breaker.
• 7268: Amperage 175A. This option sits between the 150A and 200A versions for systems specified around a 175A breaker.

Installation and setup

Confirm the required breaker amperage against the wire size, connected equipment, and the vessel electrical plan before installation. High-current DC circuits should be installed with proper cable sizing, crimped terminals, strain relief, and clean connections that can tolerate vibration and heat.

The terminal studs are 1/4-20 tin-plated brass and are specified for 35 in-lb of torque. The breaker uses #6-32 stainless steel mounting screws, with mounting screw torque specified at 6 in-lb. These details matter because loose hardware on a high-amp circuit can create heat and nuisance problems over time.

Use cases on board

This breaker family is a practical match for boats with large DC loads such as windlasses, bow thrusters, and inverters. It also suits refits where the owner wants a panel-accessible toggle breaker rather than a separate switch and protection device.

For saltwater boats, pay attention to the full installation environment. Mount the breaker where it can be reached for operation and reset, while keeping the rear terminals protected from spray, tools, and accidental contact.