Used to control THERMOWELL heating mantles or other resistive heating circuits (hot plates, heat tapes, water baths, etc). Available in solid-state or proportional on/off models. All models are fused (without circuit breakers). Calibrated in terms of percent power level from 5 to 90% (i.e. when knob is set at 50% power level, 83 volts are delivered if the line voltage is 117). Offers a wider range of control than proportional on/off type. In addition to resistive heating circuits, may be used to control incandescent lamps, room fans, stirring motors. 60 Hz.
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