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

Overview

The Blue Sea Systems C-Series White Toggle Circuit Breaker is a triple pole magnetic hydraulic breaker for high-current marine circuits that need both overcurrent protection and manual switching in one panel-mounted unit. This white toggle version is available in 250A and 300A DC ratings, with three poles, trip-free operation, and a maximum rating of 120V AC, 240V AC, or 65V DC.

It is suited to heavy onboard loads such as inverters, bow thrusters, and windlasses, where a resettable breaker can simplify service compared with fuse-only protection. The breaker uses 1/4-20 tin-plated brass terminal studs and has a 5000A interrupt capacity at 65V DC, which are important checks when matching it to battery banks, cable size, and available fault current.

Key features

• Triple pole C-Series breaker with a white toggle actuator for marine electrical panels.
• Available in 250A DC and 300A DC versions for high-current circuit protection.
• Magnetic hydraulic trip-free mechanism cannot be held closed after a fault trip.
• Combines switching and circuit protection in one device, reducing the need for a separate switch in many installations.
• Rated for 120V AC, 240V AC, and 65V DC systems when installed within the breaker specifications.
• 5000A interrupt capacity at 65V DC for use in properly engineered DC distribution systems.
• 1/4-20 tin-plated brass terminal studs with 35 in-lb terminal stud torque.
• Operating temperature range from -40 C to 85 C for engine spaces, equipment lockers, and exposed electrical compartments with suitable panel protection.
• Double and triple pole C-Series breakers trip all poles when any one pole trips.
• Rated for 10000 switching cycles, supporting regular manual operation as part of system control.

Variants

This product is offered in two amperage configurations. Both are triple pole white toggle C-Series circuit breakers intended for high-current marine electrical circuits.

The amperage rating changes between variants. The general construction and core specifications remain consistent across these two versions, including the toggle actuator, three-pole layout, trip-free magnetic hydraulic breaker type, 1/4-20 tin-plated brass terminal studs, and 5000A interrupt capacity at 65V DC.

• 7270, 250A. This version fits installations where the protected circuit is specified for a 250A breaker, commonly around large DC loads such as inverter, thruster, or windlass feeds.
• 7271, 300A. This version is the higher-amperage option in this pair and fits circuits engineered around a 300A breaker rating.

Compatibility and fit

This breaker should be matched to the vessel wiring plan, conductor ampacity, expected load, battery source, and available short-circuit current. The 65V DC maximum makes it appropriate for common low-voltage DC boat systems when the complete installation stays within the breaker rating, while the 120V AC and 240V AC ratings allow use in AC panel applications where the circuit design calls for this breaker type.

For AC main use, a triple pole breaker can switch both hot lines and neutral in a 120/240V system when that layout is required by the panel design. For DC use, the paralleled-pole configuration uses a 5/16 inch stud on the bus side, so the panel, bus work, and cable terminations should be planned around the breaker geometry before installation.

Installation and setup

Install the breaker where the toggle is easy to reach and the terminals are protected from loose gear, spray, and accidental contact. Use the specified #6-32 stainless steel mounting screws and tighten them to 6 in-lb, then torque the terminal studs to 35 in-lb after the correct lugs and cable routing are in place.

Because this is a high-current breaker, cable size, lug quality, strain relief, and clean contact surfaces matter. It belongs in a properly enclosed marine electrical panel or distribution assembly, with enough clearance for service and enough labeling for quick identification during a fault or shutdown.

Use cases on board

This breaker is a practical match for boats with large intermittent or continuous loads, including cruising boats with inverter systems, fishing boats with windlasses, and vessels using bow thrusters for close-quarters handling. It gives the operator a clear manual switch point while still opening the circuit during an overcurrent condition.

It is also useful where a skipper or technician wants a resettable protection device at the panel instead of relying only on a fuse located near the battery or equipment feed. The breaker rating still needs to follow the vessel electrical design, not just the size of the equipment it serves.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

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Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

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Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

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