Description
A relay is an electrically operated switch. It consists of a set of input terminals for a single or multiple control signals, and a set of operating contact terminals. The switch may have any number of contacts in multiple contact forms, such as make contacts, break contacts, or combinations thereof.
Relay Pin Configuration
| Pin Number | Pin Name | Description |
| 1 | Coil End 1 | Used to trigger(On/Off) the Relay, Normally one end is connected to 12V and the other end to ground |
| 2 | Coil End 2 | Used to trigger(On/Off) the Relay, Normally one end is connected to 12V and the other end to ground |
| 3 | Common (COM) | Common is connected to one End of the Load that is to be controlled |
| 4 | Normally Close (NC) | The other end of the load is either connected to NO or NC. If connected to NC the load remains connected before trigger |
| 5 | Normally Open (NO) | The other end of the load is either connected to NO or NC. If connected to NO the load remains disconnected before trigger |
Specifications:
- Coil Power : 12V DC
- Pin Out: 5 Pin – Coil – COM – NC – NO
- Nominal Coil Power: 0.36w, 0.45W
- Contact Capacity: 10A 250VAC || 10A 30VDC
- Insulation Resistance: 100MΩ.500VDC
- Operate Time: 15ms/10ms
- Terminal Type: PCB
- Contact Load: High Power
- Product name:: 12V DC Electrical Relay
- Contact Ratings: 1A,1C
- Contact Resistance: 100mΩ(at 10A 5VDC)
- Contact Material: Silver Alloy
- Size: Miniature
- Protect Feature: Sealed
- Dimensions:1.80cm x 1.50cm x 1.60cm
Applications of Relay
- Commonly used in switching circuits.
- For Home Automation projects to switch AC loads
- To Control (On/Off) Heavy loads at a pre-determined time/condition
- Used in safety circuits to disconnect the load from supply in event of failure
- Used in Automobiles electronics for controlling indicators glass motors etc.
2D model of the Relay
