SCR Power Controller Products
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The term Zero-Cross (synchronous operation of SCR's) is derived from the fact that the SCR's are turned on only when the instantaneous value of the sinusoidal wave is zero. In Zero-Cross operation, power is applied for a number of continuous half-cycles and then removed for a number of half-cycles to achieve the desired load power in the same manner as power would be controlled with a mechanical switching device. The frequency of the on-off cycles can be extremely fast because there is no limit to the number of switching operations the SCR can perform.
| Model | Phase | Mode | Voltage | Current | Highlights |
|---|---|---|---|---|---|
| 1020 | One | Zero Cross | 120-575 Vac | 10-70 Amps @ 55°C | Powered off of the 4/20mA loop, so no control transformer is required. |
| 1021A | One | Zero Cross | 120-575 Vac | 10-70 Amps @ 55°C | Accepts most commands. |
| 1021B | One | Zero Cross | 120-575 Vac | 10-70 Amps @ 55°C | Accepts most commands. Sync-guard smoothes out line current draw when multiple controllers are in use. |
| 1027A | One | Zero Cross | 120-575 Vac | 50-160 Amps @ 55°C | Accepts most commands. Features include: Sync-guard and Trans-guard. |
| 1037A | One | Zero Cross | 120-575 Vac | 50-750 Amps @ 55°C | Accepts most commands. Features include: Sync-guard, Trans-guard, shorted SCR detection, command limit and metering outputs. |
| FUSION Single Phase | One | Phase Angle or Zero Cross | 24-600 Vac, 45-65 Hz | 50 - 1200 Amps | The FUSION single phase AC power controller is 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 SCR’s. |
| Custom | Whether you need a modification to a standard power control product or a completely new custom design, we are ready to assist you. Read more about our Custom OEM Products | ||||
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