Blue Sea Systems A-Series Restricted Off Flat Rocker Circuit Breaker, Single Pole, AC/DC

Overview

The Blue Sea Systems A-Series Restricted Off Flat Rocker Circuit Breaker is a single-pole AC/DC magnetic hydraulic breaker for Blue Sea Systems electrical panels, combining overcurrent protection and manual switching in one panel-mounted device. This range covers 5A through 50A circuit ratings, with maximum voltage ratings of 240V AC and 32V DC.

The restricted-off flat rocker is useful on circuits that should not be shut down by accident, such as selected always-on or hard-to-monitor boat loads. The rocker sits flush in the ON position, and the colored actuator shows the OFF position, making the breaker easy to read without leaving a raised switch exposed on the panel face.

Key features

• Single-pole A-Series breaker for AC or DC branch circuit protection in compatible marine electrical panels.
• Magnetic hydraulic trip-free design, so the breaker cannot be held ON during a fault current condition.
• Restricted-off flat rocker helps prevent accidental shutdown of 24-hour circuits and other loads that should stay powered.
• International ON/OFF symbols support vertical or horizontal panel mounting.
• Interrupt capacity is rated at 3000A at 125V AC, 1500A at 240V AC, and 5000A at 32V DC.
• Operating temperature range is -40°C to 85°C for use in demanding marine electrical spaces.
• #10-32 stainless steel terminal screws and #6-32 stainless steel mounting screws support secure panel installation.
• Rated for 10000 switching cycles, giving the breaker practical service life as both a switch and circuit protector.

Variants

This product range varies by amperage rating, with available configurations for 5A, 8A, 10A, 15A, 20A, 25A, 40A, and 50A circuits. The amperage selection should match the protected conductor size and the load requirements of the circuit being protected.

Across the range, the confirmed shared configuration is single pole operation, restricted-off flat rocker actuation, AC/DC use, magnetic hydraulic trip-free protection, and the same maximum voltage ratings of 240V AC and 32V DC.

Installation and setup

This breaker is intended for panel mounting in a compatible A-Series opening. The terminal screw torque is 14 in-lb, and the mounting screw torque is 6 in-lb, which matters when installing in a panel exposed to vibration from engines, pumps, and hull movement.

Use the amperage rating as part of a complete circuit protection decision, not as a direct match to the appliance label alone. On a boat, breaker sizing should account for conductor ampacity, load type, expected inrush, voltage, and the location of the protection in the circuit.

Use cases on board

This restricted-off style is a strong match for circuits where accidental shutdown would be inconvenient or unsafe, while still keeping resettable circuit protection accessible at the panel. It fits well in marine AC or DC distribution layouts where a clean rocker panel face and clear ON/OFF status are important.

Shipping
We ship worldwide from the United States. Rates are calculated at checkout based on destination and package weight. Some items include free shipping, which will show automatically. Not every product is eligible for international shipping; checkout will confirm eligibility. We do not ship to PO Boxes except through USPS, and not all packages qualify.

Processing and dispatch
Most orders are verified, packed, and handed to the carrier within 1 to 2 business days. Some products may need extra handling time or ship directly from the manufacturer. For certain international orders, inventory transfers between warehouses may add time. If any delay is expected, we will let you know the dispatch date.

Delivery and tracking
Deliveries are handled by trusted carriers such as USPS, UPS, FedEx, and DHL. Estimated arrival times appear at checkout and depend on your location and the service you choose. These are estimates and can be affected by customs or carrier disruptions. A shipping confirmation with a tracking link is emailed when your order ships, and tracking may take up to 24 hours to update. You can also view tracking in your account.

Duties, taxes, and support
International customers are responsible for any customs duties, taxes, and fees charged by the destination country. If these charges are refused and a shipment returns to us, the carrier’s return cost and any re-entry customs fees will be deducted from the refund. If your order is late or you need help, contact cs@qualityboatparts.com and we will assist you.

Quality Boat Parts is a reseller. Many items include a manufacturer’s warranty, and all warranty service is handled directly by the manufacturer. We do not manage or administer warranty claims on behalf of customers.

Warranty terms, coverage, and duration are set by each manufacturer. Issues involving defects, repairs, or replacements must be addressed with the manufacturer’s support team. When available, the warranty period is listed on the product page. If it is not shown, contact us or the manufacturer for details before purchasing.

To start a claim, the customer must contact the manufacturer and follow their process. Keep your proof of purchase and original packaging, and register the product if the manufacturer requires it, as these are often needed for warranty service.

We are happy to help you find the right contact or documentation, but we cannot decide outcomes or intervene in claim resolutions. For guidance, email cs@qualityboatparts.com.