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125D 1HP DC Speed Control

Trimpot Definition and Adjustment

125D 1HP DC Speed Control

Trimpot Definition and Adjustment


A compact, cost-efficient, reliable control for PM, Shunt Wound DC motors and Universal motors. The 125 Series variable speed control incorporates up-to-date design and engineering into an amazingly small package. Installation and field adjustment are facilitated using a barrier type terminal strip and large, easily adjusted trimpots. Adjustable horsepower range – 120VAC, 1/50 through 1/8 HP and 1/4 through 1/2 HP; 240VAC, 1/25 through 1/4 HP and 1/8 through 1 HP. Standard features include an inhibit circuit for start-stop operation and 1% speed regulation over a 50:1 speed range. Dual voltage 120/240VAC or 24/36VAC models are available. Long life and quality are assured by 100% full load testing. The 125 Series is ideal for applications such as: office machinery, conveyors,  packaging equipment, printers, process equipment, centrifuges, and exercise equipment.

MODEL NUMBER STYLE INPUT (VAC) OUTPUT (VDC) OUTPUT HP RANGE
123D-C CHASSIS 24 OR 36 0-20 (24VAC) 0-30 (36VAC) 0.15-5.5 ADC ARMATURE
125D-12C CHASSIS 120/240 0-90/180 1/50-1/8 (90V) 1/25-1/4 (180V)
125DV-C CHASSIS 120/240 0-90/180 1/8-1/2 (90V) 1/4-1 (180V)

Horsepower settings are adjustable – see installation manual. Control is tested and calibrated for maximum horsepower.

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