The Carlo Gavazzi 1 pole DIN-rail mount solid state relay (SSR) features zero-cross switching via a bus interface (NRG) and provides real-time data monitoring for current (A), voltage (V), power (W), frequency (Hz), energy (kWh), and operating hours (Hrs.). It operates with a voltage range of 42 to 660 Vac (1200 Vp) and has a rated current of 43 Aac. The SSR includes built-in overvoltage protection. Output switching mode Zero cross Number of poles 1 Rated current AC-51 43 A Operating voltage 42 V to 660 V Control voltage AC 0 V to 0 V Power connection Box clamp