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Variable Speed Motor Control Drive



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  • Part Number: DC1-70U
  • SKU: DC170URE
  • Manufacturer: Reliance Electric
  • Series: DC1 Drives

DC1-70U Technical Specifications

Manufacturer Reliance Electric
Series DC1
Part Number DC1-70U
HP 1.0/2.0 HP
Input Voltage 115/230 VAC
Phase 1 Phase
Enclosure NEMA 1/NEMA 12
Hz 50/60Hz

About the DC1-70U

Reliance Electric manufactures DC1-70U, a standard NEMA 12 DC1 controller. This basic speed control unit is completely enclosed and includes operator controls. The controller must be serviced with the power ON. Hazardous voltage exists, so the user must exercise extreme caution. Basic features of all controller models include provisions for remote start and/or remote stop, 50 or 60 cycle power without modification, motor overload protection by an internal motor thermostat, a full-wave, half-controlled armature form factor, unidirectional operation with coast-to-rest stop, a half-wave field supply for shunt wound D-C motors, armature current scaling with a reconnectable jumper for the horsepower rating, short-circuit protection by incoming line fuse, and line transient protection be metal oxide varistor and RC circuit.

To install the controller, route power and control wiring through the conduit openings that are provided in the bottom of the enclosed controller. To access the top mounting slot, remove the fuse cap. Mount the controller with the fuse on top in in a vertical, upright position. Mount the flat plate design with the fuse on the right side. Using the Reliance metal hub and plug, seal the conduit entries of the enclosed controller. Then replace the fuse cap. After the controller is installed, the user can install the motor as part of the DC1 drive. In order to minimize unnecessary motor loading, ensure that coupled applications have proper shaft alignment with the driven machine or that belted applications have proper sheave/belt alignment. Follow all manual instructions with regard to installing the motor.

Frequently Asked Questions about DC1-70U

What is the DC output on a DC1-70U?
The DC ouput is 90/180 volts on the DC1-70U
What is the short circuit sym RMS rating on DC1-70U?
DC1-70U has a short circuit sym RMS rating of 10,000 amps.
What horsepower does DC1-70U use at 115 VAC vs. 230 VAC?
The horsepower on a DC1-70U is between .25 and 1 at 115 VAC. When DC1-70U is at 230 VAC, the horsepower on the DC1-70U is between .5 and 2.
Can AX Control repair my DC1-70U?
Yes. We're happy to repair your DC1-70U. Although Reliance DC1-70U drives are now obsolete, our team has worked with DC1-70U drives and would love to repair yours. For a repair quote on repair time on a Reliance DC1-70U, speak to a sales representative about what type of repair is needed for the DC1-70U

Repair Services For DC1-70U

Type Lead Time Price Action
Repair Service 1-2 weeks $493

Our highly skilled technicians can repair your DC1-70U. All of our repairs come with a 3 Year AX Control Warranty. Please contact us for additional information about our repair process. To receive the repair pricing and lead time listed above please process your repair order via our website. The following repair options may be available upon request:

  • 48-72hr Rush Repair
  • Detailed Repair Reports
  • AX Control Certificate of Warranty

AX Control Warranty Info

All products we sell are backed by our unparalleled warranty. A warranty certificate will be provided with your order upon request.
All PLCs, HMIs, and Turbine Control Boards: 3 Years
All AC/DC and Servo Drives: 2 Years
All Motors: 1 Year
Learn More