Solid State Relay Controllers

Model Phases Firing Mode Output Current Low Current High Highlights
1020 Single Phase Zero Cross AC 10 70

Powered off of the 4/20mA loop, so no control transformer is required.

1021A Single Phase Zero Cross AC 10 70

Accepts most commands.

1021B Single Phase Zero Cross AC 10 70

Accepts most commands. Sync-guard smoothes out line current draw when multiple controllers are in use.

1022 Single Phase Phase Angle AC 10 70

Accepts Vdc and potentiometer commands.

1025 Single Phase Phase Angle AC 10 70

Accepts mA commands.

1032A Single Phase Phase Angle AC 10 70

Accepts most commands. Field adjustable current limiting.

1600

Single or Three Phase

Phase Angle or Zero Cross AC 10 70

Multi-zone. Accepts most commands. Allows mixing of line voltages and load currents for multiple zones in a small footprint.

1802/1805 Single Phase Phase Angle DC 10 40

60Hz halfwave DC output. 1802 accepts Vdc or potentiometer commands, 1805 accepts mA commands. 

1822 Single Phase Phase Angle DC 10 30

Accepts Vdc or potentiometer commands. 120Hz fullwave DC output.

1825 Single Phase Phase Angle DC 10 30

Accepts mA commands. 120Hz fullwave DC output.

2022 Single Phase Phase Angle AC 10 70

Accepts most commands. Dual setpoints for fast transitions.

3020

Three Phase

Zero Cross AC 10 70

Powered off of the 4/20mA loop, so no control transformer is required.

3021A Three Phase Zero Cross AC 10 70

Accepts most commands.

3021B Three Phase Zero Cross AC 10 70

Accepts most commands. Sync-guard smoothes out line current draw when multiple controllers are in use.

Learn more about firing modes here.

Learn more about load connections here.