This panel mounted power relay is suited for controlling small single phase motors and other light loads such as electric heaters, pilot lights or audible signals. Rated up to 40 A, these durable, open-frame construction relays come with optional blowout magnet for DC switching.

irhapsody 24V DC Relays, 5-pin 30/40amp Automotive Relay, Power Trim and Tilt Relay

Relay; Single Pole Double Throw Relay (SPDT); 40A; Novita, heavy-duty relay allows for expansion of multiple electronic devices, or lights. 12 Volt, 40 Amp, 5-blade relay, complete with mounting tab. Great for use with on any auxiliary and driving light installations.

SSR-40DD Solid State Relay 40A DC to DC Input 3-32V Output 5-200V with Heat Sink

Unlike mechanical relays, these solid state relays have no moving parts, so they require less maintenance and last longer, switch faster, and are quieter. They mount on 35 mm DIN rail (also known as DIN 3) for fast installation. An LED indicator lights up when these relays are connected, so you can quickly confirm that they’re wired correctly.

irhapsody 5 Pack 40/30 AMP 12V DC Waterproof Relay and Harness - Heavy Duty 12 AWG Tinned Copper Wires, 5-PIN SPDT Automotive Relay

This particular SSR can switch current loads of up to 40A with a 3-32V DC input and a zero cross trigger control method. Each one of these relays is equipped with four screw terminals (for use with ring or fork connectors) and a plastic cover that …

The Voltage Sensitive Relay for DC 40 Amp (VRDC-40A) is an adjustable voltage relay is used in applications where a varying DC battery voltage switches on battery-charging generators, load diversion, or a low-voltage load disconnect.

The VRDC-40A/LVD is a special high Amp switching version of the 10 Amp rated VRDC voltage sensitive relay. The VRDC40A/LVD monitors the battery voltage supplying the DC powered water pump, both power and DC signal inputs are connected internally.