Blue Sea Systems Terminal Block, 65A, 600V AC/DC, Closed-Back

Overview

The Blue Sea Systems Terminal Block 65A is a closed-back terminal block for organizing independent AC or DC circuits on a boat. The range is rated for 65A continuous service and up to 600V AC/DC, with versions from 2 to 10 circuits so the block can match the number of connections in the panel, console, battery compartment, or equipment space.

Each screw pair functions as one isolated circuit, which helps keep individual feeds separated instead of tying them together by default. When a common circuit is needed, compatible 65A terminal block jumpers can be used to link positions while keeping the installation tidy and serviceable.

The closed-back base helps insulate the conductors from the mounting surface, a useful detail when the block is fastened to fiberglass, painted metal, wood backing, or a panel structure. Nickel-plated brass bus hardware, stainless steel screw material, M5 terminal screws, and #10-32 screw sizing make this series a practical choice for marine electrical work where clean terminations and secure torque matter.

Key features

• 65A continuous rating for higher-load branch circuits and distribution points.
• 600V AC/DC maximum voltage rating for use in a wide range of marine electrical layouts.
• Closed-back construction insulates power from the mounting surface.
• Each screw pair is one isolated circuit, so connections stay separated unless a jumper is added.
• Optional 9216 jumpers allow common circuits to be created on the 2600 Series 65A terminal blocks.
• UL 94 V0 PC base, nickel-plated brass bus material, and stainless steel screw material support use in protected marine electrical locations.
• #10 [M5] mounting screw size, M5 terminal screws, #10-32 screw size, and #10 [M5] wire terminal size help confirm hardware fit before installation.

Variants

This terminal block series is offered in several circuit counts, all built around the same 65A, closed-back independent-circuit layout.

The main differences are the number of circuits, the overall length, and the space each block will occupy in the installation. The 65A continuous rating, 600V AC/DC maximum voltage rating, closed-back layout, nickel-plated brass bus material, stainless steel screw material, and #10 [M5] mounting format remain consistent across these listed configurations.

• 2602: Circuits 2, with a length of 2.51 in (63.75 mm). This size works well for a small pair of separated connections where panel or bulkhead space is limited.
• 2604: Circuits 4, with a length of 3.89 in (98.81 mm). This configuration gives extra termination points without taking up the space of the longer blocks.
• 2606: Circuits 6, with a length of 5.26 in (133.6 mm). The six-circuit layout suits mid-size distribution points with several independent loads grouped in one location.
• 2608: Circuits 8, with a length of 6.63 in (168.4 mm). This version is useful where more branch circuits need to be landed in a single organized row.
• 2610: Circuits 10, with a length of 8.01 in (203.45 mm). The ten-circuit block gives the most positions in this set and needs the most mounting length.

Installation and setup

Mount the block on a flat, secure surface where wiring can enter without strain and where the screws remain accessible for inspection or future service. The closed-back base is helpful when the block is installed on a conductive or irregular surface, but the mounting area should still be dry, protected, and appropriate for marine electrical equipment.

Use #10 [M5] mounting hardware and match ring terminals to the #10 [M5] wire terminal size. Terminal torque should be checked against the specific circuit-count version before final tightening, especially on the 10-circuit version, which has a different listed torque value than the shorter blocks.

Compatibility and fit

This series is for hard-wired terminal connections where circuits need to remain independent unless intentionally joined with a jumper. It is a good match for helm wiring, DC accessory distribution, electronics feeds, pumps, lighting circuits, and other protected onboard locations where labeled, serviceable terminations are preferred over loose inline splices.

Before ordering, confirm the circuit count and the available mounting length. Allow room not only for the block itself, but also for wire bend radius, terminal access, labeling, and any future additions that may be made during refits or electronics upgrades.

Materials and hardware

The base material is UL 94 V0 PC, the bus material is nickel-plated brass, and the screw material is stainless steel. This combination is well suited to protected marine electrical spaces where the block may see vibration, changing humidity, and routine service access.

As with any marine terminal installation, use properly crimped terminals, support the cable runs near the block, and keep the connection area clean. Periodic inspection is worthwhile on boats that see heavy vibration, salt air, or frequent equipment changes.

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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