Description

Regent Controls SR552D9D Relay. Safety Sensing Relay | NO/NC | Out 12-30VDC | Compact size. DIN rail or panel mount | LED status indicator for each output pole Simple Type: Relay The SR552D9D senses the closing of external contacts or sensors. They are ideal for monitoring part presence or machine elements in high-speed production and packaging equipment. An internal power supply provides low voltage sensing to any contact, positioning electrode, limit switch, magnetic reed switch, float switch, proximity sensor, etc. The low-energy sensing circuit increases the life of reed switches and other contacts by eliminating inrush current at turn-on and arcing at turn-off. Because they respond to a drop in resistance, these relays will respond to the closing of “dirty” contacts: a contact resistance below 25K ohms will energize the relay.