• Suits various circuits in the modelling and hobby markets
• Pin terminals for easily soldered joints
• 2A switching capacity
• Designed for operation on a 5V DC power source
• Single pole double throwWhy use a standard relay?
This relay is perfect for use in home automation, modelling applications or hobbies. The relay can be mounted onto a PCB board, and comes with eight easily soldered pins. Its compact size means the relay can fit into a wide range of projects and enclosures. The relay can be run off a 5V power supply.
What does single pole double throw (SPDT) mean?
A single pole double throw relay is used to alternate which circuit a signal or voltage is sent to. It has one terminal on one side of the switch, known as the common, and two on the other side called normally open (NO) and normally closed (NC). When the relay’s coil is not powered, the common connector will be linked to the NC connection. When the relay is powered, the common connector will be linked to the NO connection.
Why would I use a relay?
There are several advantages to using a relay. You may want to switch a high current to a lower current, for example controlling a mains operated device using a lower powered switch.
You can use a SPDT relay to connect a circuit in one way when there is no power and another when the relay is active - for example switching from a red light to a green light when the relay is activated.