Celduc Relais Solid State Relays SGTA4651

The SGTA4651 is a three-phase phase-angle solid-state relay designed for controlling star or delta-connected AC loads between 300 and 510VAC at 40 to 65Hz. It features a 0-5VDC analog control input, 50A continuous current rating (AC-51), and built-in overvoltage protection with 510V varistors. The unit is housed in a compact 100x73.5x39.5mm enclosure with round tab connections and weighs 350g including heatsink. It provides 4kV electrical isolation, operates from -40°C to +90°C ambient temperature, and meets EN60947-4-3 standards with CE marking. The case is UL94V0 rated and mounting is through four M4 holes with 1.5Nm torque. Internal RC snubbers and high di/dt and dv/dt ratings support inductive loads. Peak current withstand is 550A for one cycle, with I²t limit of 1500A²s for fuse coordination.