857-728 WAGO Signal Relays

Wago 857-728 is a Solid State Relay (SSR) designed for plug-in input applications. It features push-in CAGE CLAMP spring connections for easy installation and is capable of handling a rated current of 3A continuously, with a maximum inrush current of 15A AC for 10ms. The SSR operates with a rated voltage of 0-30Vdc, nominally at 24Vdc, and is designed with a pre-assembled socket base. It includes a yellow LED indicator and supports a 2-wire connection setup. The device is suitable for use within an ambient air temperature range for operation of -20°C to +70°C and has the same range for storage temperatures. It offers a degree of protection rated at IP20 and has a control voltage range of 200-253Vdc, nominally at 230Vdc. The SSR's dimensions are H94mm x W6mm x D81mm, fitting a DIN-35 rail with a 6mm width. It features a response time of 4.5ms for switching on and 10ms for switching off, operates at a switching frequency of 20Hz, and can function within a relative humidity range of 5-85%, with no condensation permitted.