It runs on a 230 V AC 50 Hz control circuit and triggers between 0.35 and 0.75 Un (roughly 80 to 172 V), with a response time of 300 ms. That delay is intentional: it rides through brief sags that don't threaten equipment, but drops the load on a sustained undervoltage that could cause motor stall or contactor chatter.
Clip-on DIN rail mount, 20 mm wide — two 9 mm pitches. Screw-clamp terminals on the bottom accept 0.75 to 2.5 mm² rigid or flexible wire; strip 6 mm and torque to 0.6 N·m. Operating range -5 to 55 °C, storage -40 to 70 °C.