The MARS 19003 Potential Relay is a specialized motor starting relay engineered to replace the 90-64 and a wide array of OEM components. As a non-positional relay, it offers maximum installation flexibility for professional contractors working on high-performance HVACR systems. This 395V potential relay features a 395V continuous coil voltage with a precise pick-up voltage range of 260V to 275V and a drop-out voltage of 120V. Built for 60Hz applications and rated for 35 amp contacts, this component ensures reliable compressor starting by accurately managing start capacitor disengagement. The included universal break-off bracket and QC-6 conversion kit (enabling transition from screw type to 1/4 inch quick-connect) make it a versatile tool for every service truck. This HVAC potential relay is A2L compliant and UL/CSA listed, meeting rigorous industry standards for long-term electrical and mechanical durability in demanding refrigeration environments. Key Benefits Universal Compatibility: Direct replacement for MARS 64 and 90-64, effectively substituting for thousands of OEM models across major brands. Flexible Installation: The non-positional design and universal break-off bracket allow for mounting in any orientation without affecting operation. High Rating: Features a 35A contract rating and is built to handle the inrush and continuous duty cycles of commercial compressors. Easy Conversion: Comes with a QC-6 kit to quickly adapt the screw-type terminals to standard push-on connectors. Common Questions What is the pick-up and drop-out voltage for the MARS 19003? The relay is calibrated with a pick-up voltage of 260V minimum to 275V maximum, with a drop-out voltage of 120V. Can this relay replace a Steveco or GE 90-64? Yes, the MARS 19003 is the industry-standard replacement for the 90-64 potential relay and includes a detailed cross-reference guide. Is the MARS 19003 suitable for A2L refrigerants? Yes, this specific model is A2L compliant, making it suitable for modern systems using mildly flammable refrigerants. Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
