Celduc Relais Solid State Relays SVTA4691E

The SVTA4691E is a three-phase digital phase angle controller designed for precise voltage control of resistive, inductive, motor, and rectified loads. It operates with a mains voltage range of 200 to 480 VAC and a frequency range of 40 to 65 Hz, supporting both star and delta wiring configurations. Mounted in a compact 100 x 78 x 56.5 mm housing weighing 500 g, it features a potentiometric analog input (0-5 VDC) for control and includes soft start/stop functions, dynamic power factor compensation, and linearity correction for resistive loads. The unit is fully optoisolated and delivers up to 50 A continuous current (125 A with heatsink) under AC-51 ratings, with integrated overvoltage protection using 510 V varistors. It provides status indication via LED and AC/DC switches, with 4 kV isolation between inputs, outputs, and the case, and operates within an ambient temperature range of -40 °C to +90 °C.