MARS 16099 Potential Relay

The MARS 16099 Potential Relay is a heavy-duty compressor start relay engineered for single-phase motors in high-torque HVACR applications. As a direct-spec service part, it is a primary refrigeration potential relay used to optimize the startup cycle by managing the start capacitor circuit. This unit is designed to replace Copeland 0940-0001-68 and GE 3ARR3-3S3 components, ensuring seamless field integration for technicians. With a continuous coil voltage of 420V and a 35A contact rating, it provides the precise pick-up and drop-out calibration required for hermetic compressor protection.

Constructed with large silver/cadmium oxide contacts, the MARS 16099 minimizes arcing and extends service life in demanding industrial environments. It operates effectively on both 50Hz and 60Hz frequencies, making it a versatile HVAC motor starter component for air conditioning units and commercial refrigeration systems. For contractors, this relay offers a non-position-sensitive mounting capability, simplifying the replacement of OEM potential start relays in crowded control panels.

• Universal Compatibility: Serves as a standard drop-in replacement for Copeland and GE potential relays in commercial systems.
• High Torque Support: Reliably manages start winding disconnection to ensure rapid motor acceleration under load.
• Industrial Durability: Features large silver/cadmium oxide contacts to withstand repetitive 35A cycling.
• Precise Calibration: Factory-set pick-up (223V-259V) and drop-out (60V-121V) ranges prevent capacitor overheating.
• Flexible Mounting: Designed for easy orientation within varied electrical housing configurations.

• Which compressors is this relay compatible with? It is specifically designed for Copelaweld and other hermetic compressors requiring a 420V continuous coil rating.
• Can this replace a GE 3ARR3 series relay? Yes, the MARS 16099 is a direct cross-reference for many 3ARR3-3S3 specific models.
• What causes a potential relay to fail in the field? Excessive heat, improper voltage spikes, or a shorted start capacitor are the primary causes; always test the capacitor when replacing the relay.

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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.