WR21-E12B-D30-SW

Series:	*
Part Status:	Obsolete

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Introduction

WR21-E12B-D30-SW is a special type of relay utilized for control and safety circles within an industry. It offers the highest level of performance with robust and reliable construction which makes it ideal for applications that require superior components. It is also suitable for use in harsh conditions and can meet stringent safety requirements. The relay is equipped with great features such as notch resistant interchangeable contacts, advanced current and voltage ratings, low power consumption, and wide range of voltage ratings. Hence, it is one of the most sought-after relay solutions in manufacturing and industrial sectors.

Application Field

WR21-E12B-D30-SW relays are widely used in industries like Machine Tools, Industrial Automation, Instruments, Robotics, Monitoring and Control Equipment for a wide range of applications. These include switching, controlling and monitoring of high voltage current, motor starters, power conversion, switching, electrical control, and low voltage current. With its high mechanical resonance frequencies, it can be used in applications requiring high precision, rapid response, and high noise immunity.Moreover, the WR21-E12B-D30-SW relay’s versatile design makes it suitable for a variety of applications in fields like HVAC, Oil & Gas, Mining, Petrochemical Refining, and Automotive applications. The relay is also used in applications involving handling of high and low temperature such as cryogenic systems and Explosives Loading Machines.

Working Principle

WR21-E12B-D30-SW relays operate on the principle of utilizing electromagnetism. They contain one or more coils which, when energized create a magnetic field. This, in turn, causes a latch structure made of soft iron to move, thus tripping the contacts. As the contacts are physically connected to the circuit, the current or power is switched on or off.Depending on the design, different type of WR21-E12B-D30-SW relays are manufactured for specific applications. For example, there may be a latching relay or non-latching relay. Non-latching relays only need momentary or intermittent contact to activate them and are typically used in alarm conditions.In addition, the WR21-E12B-D30-SW relay requires a minimum current to activate its electromagnet. The current must be strong enough to close the contact, but not high enough to cause burning or sparking at the contacts. The contacts should also be designed to close and open rapidly to provide quick response while minimalizing the risk of arc discharge at the contacts.To ensure optimal performance, WR21-E12B-D30-SW relays must be installed in a well-ventilated environment, and the operating temperature should not exceed the maximum operating temperature prescribed by the manufacturer.

Conclusion

The WR21-E12B-D30-SW relay is one of the most reliable and robust relays available. It is extremely versatile and can be used for a wide array of applications. Its superior features make it ideal for applications that require outstanding performance in harsh conditions. As such, it is the preferred choice of many in industries like Machine Tools, Industrial Automation, Instruments, Robotics, and Automotive.

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