Mechanical relay with arc suppression

A new technology developed by Watlow engineers extends the life of relays within the company’s temperature and power switching controllers in heating applications that require a high volume of cycles. No-ARC relay is a mechanical relay with arc suppression provided through smart electronics. The technology reduces arcing across relay contacts and extends the life of the relay.
By Control Engineering Staff February 1, 2008

A new technology developed by Watlow engineers extends the life of relays within the company’s temperature and power switching controllers in heating applications that require a high volume of cycles. No-ARC relay is a mechanical relay with arc suppression provided through smart electronics. The technology reduces arcing across relay contacts and extends the life of the relay. Relays typically have a life cycle of about 100,000 cycles at rated amperage; but the NO-ARC relay will have a life of more than four million cycles, according to the company. NO-ARC technology can handle high current without a large heat sink. Eliminating the need for a heat sink reduces costs and the number of components required for operation. Watlow products incorporating NO-ARC include E-SAFE II Hybrid Power Switch, EZ-ZONE PM Integrated Controller, and EHG SL10 Process Controller and Safety Limit. www.watlow.com Watlow