RRM004A24V

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Power Relays, Over 2 Amps

The RRM004A24V is an electromagnetic relay with an electrical current rating of two or more amperes. It’s an electrically operated switch that uses an electromagnet to mechanically open or close a switch contact in an electrical circuit. The main applications of the RRM004A24V relay are safety-critical control systems, such as powering and controlling motors, heaters, industrial machines, and other high-amperage appliances.

Design and Features

The RRM004A24V relay is designed to accommodate a range of switching ratings, from 2 to 24A. It has a contact arrangement with one common terminal, one normally open terminal, and one normally closed terminal. This contact arrangement allows it to perform three different functions – NO (normally open) mode, NC (normally closed) mode, and SPDT (single-pole double-throw) mode. The contact ratings are 2A (250VAC, 600VAC, 28VDC).

The RRM004A24V features a wide operating temperature range from -40C to 85C and an insulation resistance of 500MΩ. Its coil voltage is 24V and has a nominal power consumption of 1.2W. It has a dimensional footprint of 10.2mm width by 10.9mm length, and a height of 40mm. Lastly, it has a mechanical life of 100K operations.

Working Principle

The working principle of the RRM004A24V is relatively straightforward. When the current running through the coil is increased, the electromagnet becomes energized, causing its plunger to move and the associated contact point to open or close. The motion of the plunger is transmitted to the contact point via a lever or armature, allowing it to switch current on or off as required. The contact of the RRM004A24V is designed to be self-latching, meaning that the contact point will stay in its closed or open position until a current is applied to the switch again.

Safety Considerations

The RRM004A24V relay is designed to operate in potentially hazardous environments. This means that certain precautions must be taken to ensure its safe functioning. For instance, it is important to check the relay contact points regularly for contamination or damage, as this can cause the switch to malfunction or fail. In addition, the relay must be properly grounded. Finally, it’s important to provide adequate ventilation to the relay case to ensure that it doesn’t overheat.

Conclusion

The RRM004A24V relay is a reliable and robust electromechanical switch with a range of features that make it suitable for a variety of safety-critical applications. Its wide operating temperature range, contact rating, and self-latching design means that it can be reliably used in a variety of environments. This relay is robustly designed and must be treated with care to maintain its long-term reliability and effective operation.

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