Phoenix Contact 2700577

The coupling relay is specifically configured for SIL 3 applications, adept at interfacing digital output signals with peripheral devices. It incorporates an enabling current path and a confirmation current path, ensuring reliable operation in safety-critical environments. The product, designated as PSR-PC20-1NO-1NC-24DC-SC, supports safe state off applications and is equipped with a test pulse filter for enhanced signal integrity.

This relay has a rated control supply voltage of 24 V DC and operates with a typical control current of 50 mA. Its design includes a reinforced insulation rating of 6 kV from the control circuit to the enabling current path, ensuring robust protection against electrical surges. The relay's mechanical service life is rated for 10 million cycles, indicating its suitability for prolonged industrial applications.

Installation is streamlined through a TBUS connection and a plug-in screw terminal block, accommodating conductor cross-sections from 0.2 mm² to 2.5 mm². The device is housed in a yellow PA casing, designed for DIN rail mounting, and features LED indicators for operational status, voltage display, and error indication. With an operating temperature range from -40 °C to 70 °C, it is engineered for diverse environmental conditions while adhering to a degree of protection rated at IP20.