Mini Relay 4 Pin Micro Relay Wiring Diagram

4 pin micro switch wiring diagram.

Mini relay 4 pin micro relay wiring diagram.

It uses 4 shielded wires. The iso defines this type of relay as 1 inch (2.5 cm) by 1 inch (2.5 cm) by 0.5 inches (25.4 mm by 25.4 mm by 12.7 mm). If the coil is not activated, 30 will always be connected to 87a.

As you know that an electrical switch mainly gets used to. The red one is for sure wire with dc ability of 5 liter. Looking at the diagram, we see the pinout of a typical 12v relay.

Typically it utilizes black green white and red cable colors. Finally the modulation wire will go on the remaining pin. Look for relay diagrams or a relay schematic that is printed on the side of the relay to determine it.

Determine that the relay is an iso micro type. The following diagrams show some common relay wiring schemes that use 4 pin iso mini relays. Normally open or normally closed types.

Want to know how to wire them up. Protective relays can prevent equipment damage by detecting electrical abnormalities, including overcurrent, undercurrent, overloads and reverse currents.  but, before we move on, do note that we can’t wire a 4 pin relay without knowing the applications.

The automotive iso mini relays we have been looking at above are typically available in two types of pin layout designated type a and type b layouts. Pin diagram spdt relay switch dpdt relay switch. 85 and 86 are the coil pins while 30, 87, and 87a are the contact pins.