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Rockwell Launches Electronic Motor Overload Relays

Rockwell Automation, the industrial automation solution provider has launched E100 Electronic Motor Overload Relay under its brand Allen-Bradley.

Electronic overload relays provide better protection to industrial motors against unplanned downtime in comparison to thermal relays.

E100 Relay: Variants & Features

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E100 overload relay is available in two configurations: basic and advanced. Basic model comes with two user-adjustable trip-class settings (length of time in seconds it will take for the relay to open in an overload condition) of 10 and 20. Advanced model of this relay has four trip class settings: 10, 15, 20 and 30.

Current sensing range for both models is 100 Ampere. For current sensing above that, advanced model can use external current transformer configurations to achieve a maximum rating of 800A.

E100 also has test and reset buttons. A remote reset option is also available for users to remotely reset the overload.

Electronic Overload Relay: Working Principle

Electronic overload relays work on the principle of electromagnetic field rather than relying on heat variation as in thermal relays. When high amount of current (over the permissible limit) passes through the coils of electronic relay it cuts power supply to motor.

About Rockwell Automation: Rockwell Automation Inc. is a U.S. based  industrial automation and information technology solution provider. The other brands under its umbrella include Allen-Bradley and FactoryTalk software.

It has around 23,000 employees worldwide and has operations in more than 100 countries worldwide. The company reported net revenue of USD 6.69 billion in FY-2019. In India, the company operates through its wholly owned subsidiary Rockwell Automation India Pvt. Ltd. headquartered in Gurugram (Haryana) with sales offices all over the country.