4 Pin Micro Relay Diagram

Relay diagrams pirate4x4.

4 pin micro relay diagram. Note that each pin is numbered. Relays switches are used to open and close circuits electromechanically or electronically. Hvac fan relay wiring diagram download. Numbers of a relay.

Best bosch relay wiring diagram 5 pole electrical outlet symbol 2018. An iso micro relay has the control circuit connected to pin 86 and pin 85 and the load circuit connected to pin 30 and pin 87 or 87a. Looking at the diagram we see the pinout of a typical 12v relay. 4 pin high capacity normally open mini relays stock code description type protection wiring diagram 6646b p141270x 12v 70a diac 1 form a 30 87 9 5mm american 87 30 86 85 30 86 85 87 5 pin changeover mini relays stock code description type protection layout wiring diagram 6608b p2512r 12v 30 20a resistor e 1 form c.

Here we look at relay switch pin diagram and the different kinds of relay switches. 85 and 86 are the coil pins while 30 87 and 87a are the contact pins. The difference between a 4 and 5 pin relay is that a 4 pin relay is used to control a single circuit whereas a 5 pin relay switches power between two circuits. 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.

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. 87 and 87a are the two contacts to which 30 will connect. When a relay contact is closed there is a closed contact when the relay is not energized. 12 volt relay wiring diagram collections of best relay wiring diagram 5 pin bosch endearing enchanting blurts.

The most common relays used to control electrical accessory devices in the automotive industry are iso mini and micro relays. You will notice that on the type b layout pins 86 and 30 are swapped over compared with the type a layout. Normally open or normally closed types. When a relay contact is open the relay is not energized.

If the coil is not activated 30 will always be connected to 87a. 4 and 5 pin designs spst spdt are used in both styles of automotive relays. 4 pin relay 4 pin relays use 2 pins 85 86 to control the coil and 2 pins 30 87 which switch power on a single circuit. 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. 12 volt wiring diagram best 12v relay pin 5 and roc grp org in. These layouts are shown on the two 5 pin relays below pin 87a not present on 4 pin relays. In this video i show you how to wire a micro 12 volt automotive style relay.