859-304 WAGO Signal Relays

Wago 859-304 is a fixed-type relay module featuring CAGE-CLAMP spring connections for secure and maintenance-free wiring. It is designed to handle a rated current of 5A continuously and can manage up to 20A AC inrush maximum current for 20ms. The module is equipped with a red LED for status indication and operates based on an electromechanical design. It recommends a minimum switching load of 20V / 10mA / 24V / 1mA and incorporates a 1C/O / SPDT (Single Pole Double Throw) contact configuration. The relay does not specify a supply voltage for AC but operates within an ambient air temperature range of -40°C to +50°C for operation and -40°C to +70°C for storage. The control voltage range is specified as 20.4-28.8Vdc (24Vdc nominal), with a rated impulse voltage (Uimp) of 0.85...1.2 x Uc. Its dimensions are H91mm x W6mm x D56mm, fitting a 6mm width on a DIN-35 rail for mounting. The relay's contacts are made of Silver-Tin (AgSnO) to ensure durability, with a rated insulation voltage (Ui) of 4 kV and a switching voltage maximum of 250Vac. It supports a single-pole / 1-pole (1P) control voltage for AC, with a power consumption tailored for DIN-35 rail mounting. The relay's performance is characterized by a switching speed of 15ms for contacts closing and 25ms for contacts opening, with a rated operating voltage (Ue) of 250 V. It is designed for up to 50,000 operations for Normally Closed (NC) circuits and has a mechanical endurance of 5,000,000 operations. The relay operates effectively within a humidity range of 5-95% RH, with no condensation permitted.