How to wire a relay to trigger ground

1. Do relays need to be grounded?
2. What do pins 30 and 87 do on a relay?
3. Which terminal is ground on a relay?
4. What is 85 and 86 on a relay?

Do relays need to be grounded?

Does a Solid State Relay need to be grounded? Generally, anything metal is required to be grounded… the base of a solid state relay is metal … so if the SSR is mounted inside metal enclosure, the enclosure must be grounded or covered for protection against dangerous voltages.

What do pins 30 and 87 do on a relay?

One of these will be used to ground your current, while the other will be connected to a switched power source. 87 and/or 87a will be connected to your controlled accessories that you wish to turn on and off with your relay. 30 will then be the pin connected to your battery power.

Which terminal is ground on a relay?

In any circuit with a DIN relay, without looking at a wiring diagram, you know that: Terminal 86 supplies power to the relay's internal electromagnet. Terminal 85 grounds the electromagnet.

What is 85 and 86 on a relay?

85 and 86 are the coil pins while 30, 87, and 87a are the switch pins. 87 and 87a are the two contacts to which 30 will connect. If the coil is not activated, 30 will always be connected to 87a. You can think of this as the switch in OFF.