ACTH series adaptive true RMS current transducers monitor electric heat zero-crossing burst fired SCR controllers, provide fast response and are ideal for electrical heater applications. 3ACT/3ACTR Series AC 3-phase current transducers monitor three-phase loads, motors, machines or buildings. The large triple-aperture fixed core design has three current outputs and a fourth output for the average of the three. ACTS series AC current sensors combine a current operated switch and transducer and provides an analog output and a solid-state switched output which changes state when the current exceeds setpoint or falls below normal running current. VADT series AC/DC voltage transducers are high-performance True RMS sensing for AC voltage in single-phase or 3-phase installations and DC voltage sensing in DC powered installations.