This Omron MY4IN1-D2 DC24 (S) general purpose relay has reverse coil polarity, a built-in LED indicator with a lockable test button, a built-in diode, plug-in or solder terminals, and is suitable for use in low current applications. This relay has quadruple pole double throw (4PDT) contacts, an input current rating of 37.7 mA and a load rating of 24VDC at 3 amp, with an input of 24VDC. It has a built-in LED with a lockable test button for monitoring and testing operation, and a built-in diode for surge suppression. This general purpose relay has plug-in terminals for connecting to a socket or soldering to contacts, and is suitable for use in HVAC, appliance, and security applications.
|Input Current Rating||37.7 mA|
|Load Rating||24VDC, 3 amp|
|Operating Temperature||-55 to +70 degrees C|
|Enclosure Dimensions*||36 x 21.5 x 28mm (H x W x D)|
|Standards Met||UL (Underwriter's Laboratories)|
CSA (Canadian Standards Association)
*H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.
Relay switches (also called an electrical relay or an electrical relay switch) use a small amount of power to control a larger source of power connected to electrical devices such as car motors, computers, and lighting installations. A basic relay switch has a control circuit with an electromagnetic coil and a load circuit with contacts and a lever. When current flows into the relay switch, it moves through the coil and a magnetic field is created, which causes the lever in the load circuit to move between contacts, either turning the device on or off. In a normally open (NO) relay switch, when power is supplied to the relay, the load circuit is closed and the power source connected to the relay is turned on. In a normally closed (NC) relay switch, when power is supplied to the relay, the load circuit is open and the power source connected to the relay is turned off. In other types of relay switches, non-moving parts such as transistors or semiconductors can be used as the control circuit to operate the switching mechanism. Relay switches can be controlled with an external switch, such as a light switch, or they can be connected to an automatically switched power source, such as a car ignition. One relay can operate multiple switches, and multiple relays can be operated with a single switch, with each relay operating independently from the other relays in the system.
Omron manufactures and distributes electronic components, equipment, and systems for industrial automation. The company, founded in 1933, is headquartered in Kyoto, Japan.