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Advanced Search3 Phase, Zero Cross (3 Leg Control)
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 |
|---|---|---|---|---|---|
| 3321A | Three | Zero Cross | 120-575 Vac | 10-70 Amps @ 55°C | Accepts most commands. |
| 3337 | Three | Zero Cross | 208-575 Vac | 200-750 Amps @ 55°C | Accepts most commands. Features include: Sync-guard, Trans-guard, shorted SCR detection and on-board line fusing for most frame sizes. |
| 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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