For veteran HVACR contractors seeking a high-reliability solution for complex scheduling, the Intermatic GM40AVE-RD89 Timer serves as the definitive direct replacement for GM40AVE models. This universal electronic time switch is engineered with auto-voltage technology, allowing the unit to automatically detect and adjust for input voltages between 120V and 277V without manual DIP switch or selector pin configuration. The robust 40A DPDT contact rating (2 NO / 2 NC) provides the switching capacity necessary for heavy-duty commercial HVACR loads, irrigation pumps, and large-scale lighting circuits. With a versatile 24-hour / 7-day digital interface, you can program up to 14 discrete setpoints with to-the-minute precision. The mechanism is protected by a UL Type 3R outdoor enclosure, making it suitable for both interior and exterior installations, while the integrated NiMH battery backup ensures up to 2,500 hours of memory retention during power outages to prevent call-backs and schedule drift. Key Benefits Universal Voltage Integration: Automatically senses and selects 120, 208, 240, or 277 VAC to simplify inventory and installation. High-Capacity DPDT Contacts: Supports simultaneous control of two independent circuits with a heavy-duty 40A resistive rating. Flexible Scheduling Blocks: Features 5 preset block programs for rapid multi-day setup across industrial or agricultural applications. Simplified Retrofitting: The compact design fits easily into existing Intermatic enclosures, reducing labor time during upgrades. Internal Manual Override: Allows for temporary ON/OFF switching without disrupting the programmed logic for upcoming events. Common Questions Can the GM40AVE-RD89 control two separate loads? Yes. The DPDT switching configuration features two normally open and two normally closed contacts, allowing you to manage two independent single-phase loads simultaneously. Is this unit compatible with previous GM40AVE installations? The GM40AVE-RD89 is the official direct replacement for the legacy GM40AVE series, maintaining compatibility with the standard mounting footprints and terminal requirements. Does the timer lose its program if the main power fails? No. The unit includes a self-recharging NiMH battery backup that maintains your scheduled programming and time-of-day for over 100 days (2,500 hours) without external power. 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.
