Hella Marine Mini ISO SPDT Relay, 24V, 20A N/O, 10A N/C, 6.3mm Blade Terminals, IP54

Overview

The Hella Marine 007903001 is a 24 V relay with a 20 A rating and a five terminal blade connection layout for quick, secure wiring.

It is a practical way to switch a higher current load from a smaller helm switch, an automation output, or another low current control circuit. The changeover contact set lets you wire either normally open or normally closed behavior, which helps when you need a device to default to on or default to off when the coil is not energized.

Key features

• 24 V coil for 24 V onboard electrical systems
• 20 A rating for common accessory loads
• Single pole, changeover (SPDT) contact set for normally open or normally closed wiring
• Five blade terminals for standard push on electrical connectors
• Useful for keeping long control runs low current while the load wiring stays short and properly protected

Installation and setup

Mount the relay where wiring stays tidy and supported, typically inside a dry electrical space, behind a helm panel, or in a protected relay block. Use correctly sized female blade connectors that fit tightly, add strain relief so vibration does not work the terminals loose, and label the conductors so future troubleshooting is straightforward.

Electrical and system integration

Plan the circuit so the relay switches the load feed while your control side only powers the coil. Protect the load circuit with an appropriately sized fuse or breaker near the power source, and confirm the actual running current and startup surge of the device you are switching so the relay rating is not being pushed in real use.

Use cases on board

This relay is a good match for 24 V boats that need clean switching for accessories such as deck or spreader lights, ventilation blowers, small pumps, and other intermittent loads that fit within the current rating. It also works well when an electronics trigger or a control panel output needs to operate a separate power circuit without routing heavy current through the switchgear.

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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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