Single Phase AC

Single Phase, Phase Angle:

In phase angle control, each SCR of the back-to-back pair is turned on for a variable portion of the half-cycle that it conducts. Power is regulated by advancing or delaying the point at which the SCR is turned on within each half cycle. Light dimmers are an example of Phase-Angle control. 

Single Phase, Zero Cross:

In zero-cross control, load power is turned ON and OFF only when instantaneous value of the sinusoidal waveform is zero. Load power is controlled by switching the SCRs “ON” for a number of complete electrical half-cycles, and then “OFF” for a number of complete electrical half-cycles.

Model Phases Firing Mode Output Current Low Current High Highlights
Multizone MicroFUSION Single phase Phase angle, Zero cross, Zero Cross Transformer Mode AC 8 400

MicroFUSION is an ultra-compact high-performance microprocessor-based power controller, available in single or three phase models to control AC loads. 

MicroFUSION Single Phase Single phase Phase angle, Zero cross, Zero Cross Transformer Mode AC 8 400

MicroFUSION is an ultra-compact high performance digital SCR controller that adapts to the analog environment as well as the digital environment. 

FUSION Single Phase (AC) Power Controller Single phase Phase angle, Zero cross, Burst AC 50 1 200

24 - 600 Vac. A microprocessor-based SCR controller operating both analog and digital interfaces. A phase angle or zero cross fired controller which linearly controls, with respect to the setpoint, the AC voltage, current, or true power applied to an electrical load. Control is achieved by means of a pair of inverse parallel SCRs.

Compact FUSION - Single Phase Power Controller Single phase Phase angle, Zero cross, Burst AC 10 160

24 - 600 Vac. A microprocessor-based SCR controller, operating with both analog and digital interfaces. Output is controlled linearly with respect to command signal and can be set to the average or RMS value of the voltage or current, as well as true instantaneous power or external feedback.

2022 AC Single Phase Power Controller Single phase Phase angle AC 10 70

120 - 575 Vac. Analog SCR Controller. Accepts most commands. Dual setpoints for fast transitions.

1600 (Multi-zone) Power Controller Single phase Phase angle, Zero cross AC 10 70

120 to 575 Vac. Multi-zone SCR Controller. Accepts most commands. Allows mixing of line voltages and load currents for multiple zones in a small footprint.

1032A Single phase Phase angle AC 10 70

120 - 575 Vac. SCR controller that accepts most commands. Field adjustable current limiting.

1029D Single phase Phase angle AC 50 2 000

120 to 575 Vac. Analog SCR Controller. Higher current ratings than our solid state relay models. Features include: current limiting, shorted SCR detection, over-current trip, metering outputs, user selectable feedback modes.

1025 Single phase Phase angle AC 10 70

120 - 480 Vac. Analog SCR Controllers. Accepts mA commands.

1022 Single phase Phase angle AC 10 70

120 - 480 Vac. Analog SCR Controllers. Accepts Vdc and potentiometer commands.

1021B Single phase Zero cross AC 10 70

120 - 575 Vac. Analog SCR Controller. Sync-guard™ smoothes out line current draw when multiple controllers are in use.

1021A Single phase Zero cross AC 10 70

120 - 575 Vac. Analog SCR Controller. Accepts most commands.

1020 Single phase Zero cross AC 10 70

120 - 575 Vac. Analog SCR Controller. Powered off of the 4/20mA loop, so no control transformer is required.