Press Release

For Immediate Release

Potential Relay Series

Aliso Viejo, California - American Zettler, Inc. announces the ZCPR Series as its latest offering in our growing line of products for the industrial market. This series of potential relays is used to assist in the starting of single-phase motors, which employ start capacitors for high torque. Common applications include air conditioning, commercial refrigeration, heat pumps and more. The coil of a potential relay is energized by the potential of the start winding. When this voltage is raised to the pick up value the contact will open and disconnect the start capacitor. The relay will remain energized until the start winding voltage is removed or decreases below the drop out value.

  • Class B (130°C)° insulation system

  • 50 & 60 HZ at various voltages from 120V to 380V 

  • 50A contact rating

  • Various operating positions and mounting styles available

  • Large silver cadmium oxide contacts

  • UL/CUR approved

For pricing please contact the factory.

Product Info: ZCPR

Fred Harmon
Vice President, Sales & Marketing
American Zettler, Inc.
75 Columbia
Aliso Viejo, CA 92656
Tel:(949) 831-5000
Fax:(949) 831-8642
Web Site:



Product ZCPR Motor Start Potential Relay 
Product Description Motor Start Potential Relays are a control solution for motors that utilize start capacitors. A wide selection of configurations available.
Features/Benefits 50A switching capacity
SPNC configuration
Custom pull-in, drop-out voltages available
UL 873 approved 
Product Applications Air conditioning, heating, refrigeration
Product Availability Contact Factory
Product Cross Reference Electrica: RVA
Supco: 90xx
Tyco: 38x
White-Rogers: 90-xx