Single-pole double-throw relay comes with five terminal points. SPDT relay is very useful in various applications because of its internal configuration.

With a higher current capability than the respected industry standard Bosch relay, the Firgelli SPDT relay is the best choice for your single-pole double-throw relay needs!

Model # HFV4

Firgelli 12V DC 20 amp SPDT Relays are widely used in electrical applications where one circuit is to be energized or turned "on" by the presence of a voltage, provided by another circuit. An example of this is when a projector turns on it has a 12V signal to let different accessories know it's on. Anywhere a switch can go in a circuit, a relay can replace it, (as long as there is a triggering voltage available to activate it).

The "switch" in a relay is more often called a solenoid or coil. A solenoid is like a piston that pushes outward when energized with electricity. This push mechanically trips the switch in the relay, completing circuit and allowing the switched voltage output.

A relay can be triggered with an electrical pulse as small as 75 milliamps. The switched output can be as high as 20 amps or more. One very useful use of a relay is to control a high current device such as a linear actuator motor with a low current signal, such as a projector or home theater controller. Another common use for relays is to separate control voltage from motor voltage. This is useful when you've got a control voltage of 12V and you want to control a linear actuator running on 36V.

Specifications

Hermetically sealed plastic housing and high-quality copper coil windings
High-current contacts and are manufactured under strict ISO standards
20 Amps
5-Pin Relay SPDT 30/40A Bosch Type.
20 amps on the normally open contact leg (87), and 20 amps on the normally closed contact leg (87a).

12 Volt Single-Pole Double-Throw Relay SPDT Relay 20Amp

12 Volt Single-Pole Double-Throw Relay SPDT Relay 20Amp