40 Amp Sealed Relay
Part No: 2301-0002-A (No Hardware)
Part No: 2301-0002-B (w/ Hardware)
Our 40 amp sealed relay delivers reliable performance for marine systems. Designed for medium-duty switching tasks, its sealed construction protects against moisture, saltwater, and corrosion, making it ideal for harsh conditions.
Built with durable materials and precision engineering, this 12V 40 amp relay withstands vibration, extreme temperatures, and continuous use. Perfect for controlling lights, pumps, and accessories, it ensures consistent, long-term operation across a variety of applications.
Key Features:
Rated for 40 amps at 12 volts
Sealed and waterproof design for harsh marine environments
Resistant to vibration, saltwater, and extreme temperatures
Ideal for lighting, pumps, motors, and vehicle accessories
Easy installation for a wide range of 12V systems
Applications:
Marine boats and yachts
RVs and campers
Automotive and off-grid 12V systems
Specifications/Additional Info
- IP69 Sealed
- Voltage range: 12 – 24v
- Connecting Studs: 2x #10/32
Spec Sheet
Relays Brochure
Frequently Asked Questions (FAQ)
What does a 40 amp relay do?
A 40 amp relay acts as a high-current switch. It allows a small control circuit, like a dashboard switch, to safely turn on and off larger electrical loads such as pumps, motors, or lights. This keeps your wiring safe and improves reliability, especially in marine and vehicle systems.
Why use a relay instead of a switch?
A relay lets you control high-current devices without running that current through a standard switch. This reduces wear on switches, allows shorter heavy-gauge wiring runs, and improves safety. Relays also perform better in harsh environments where vibration, moisture, and saltwater are present.
What size wire should I use for a 40 amp relay?
For most 12 V systems, use 8 AWG copper wire for the high-current connections to the relay. For longer runs or high-load applications, you can step up to 6 AWG copper to reduce voltage drop. The control circuit (coil) uses much thinner wire since it only carries a small current.
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Or just have a question? Fill out the form or reach us directly by phone or email using the contact details below.
1-855-258-3700
sales@bluewatergadgets.com
13620 49th St N Unit 101, Clearwater, FL 33762