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Emerson Climate Technologies: Air Conditioner, Heat Pump Relay

December 10, 2012
air conditioner, heat pump relayThe White-Rodgers SureSwitch™ relay, model number 49P11-843, replaces the function of a contactor and short-cycle timer with a reliable sealed relay. It increases the reliability of air conditioning systems and heat pumps. Designed to fit in the space of a traditional mechanical contactor, the relay is a universal electronic upgrade. The relays address the two major causes of contactor failures: contact welding and contamination, said the company. A microprocessor control, combined with a sealed relay, ensures long life and virtually prevents debris and insects from getting to critical control elements. In addition to these features, the latching relay design eliminates noise while the microprocessor provides both short-cycle and brownout protection to ensure longer life for compressors and fan motors. SureSwitch relays can be used to upgrade 30-A contactor applications. According to the manufacturer, SureSwitch is an ideal add-on with new preventive maintenance contracts or for jobs where repeat failures are likely due to exposure to insects or inconsistent power.

Emerson Climate Technologies
www.white-rodgers.com

eProduct 181

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