Intermatic MIL72AQTUZH-120 Timer

The Intermatic MIL72AQTUZH-120 is a heavy-duty 24-hour electromechanical timer module engineered for high-reliability load control in commercial and industrial HVACR sectors. Operating at 120V AC, this quartz-pro-grade module features a self-recharging battery backup that provides up to 72 hours of carry-over power, ensuring your synchronized schedules remain intact during utility interruptions. It is equipped with a high-capacity 21 Amp SPDT switch (Single Pole Double Throw), making it a versatile choice for managing single-phase loads including lighting control, ventilation systems, pumps, and aeration equipment. The unit supports both DIN rail and surface mounting, offering flexibility for panel builders and technicians performing field retrofits.

Designed for precision and ease of use, the MIL72AQTUZH-120 utilizes captive trippers at 15-minute intervals, allowing for granular scheduling without the risk of losing small parts. The integrated three-way manual override (ON/AUTO/OFF) allows for immediate circuit testing or maintenance bypass without disrupting the master clock dial. Housed behind a clear plastic dust cover, the synchronous-style clock face provides an at-a-glance confirmation of the current time and program state. With its robust motor rating of 1 HP at 120V, this Intermatic timer is built to withstand the rigorous starting currents often encountered in agricultural and mechanical applications.

• Battery Backup Reliability: Includes a 72-hour power carry-over to eliminate site visits for clock resetting after local power failures.
• Universal Mounting: Fits standard 35mm DIN rail or can be surface mounted in a control panel using the included sub-base.
• High Amperage Rating: The 21A resistive rating allows for direct control of larger loads without always requiring an external contactor.
• Non-Removable Trippers: Captive 15-minute segments prevent lost hardware and simplify complicated scheduling.
• Manual Override Switch: Quick three-position toggle allows for manual load cycling while maintaining the programmed 24-hour cycle.

How do I set the current time of day?
Rotate the minute hand clockwise until the time arrow on the center of the dial aligns with the current time on the outer 24-hour ring.

What is the purpose of the SPDT contact configuration?
The Single Pole Double Throw (1 NO / 1 NC) contact allows you to toggle between two separate loads or use the normally closed contact for applications that require the circuit to open during a timed event.

Does the battery backup require regular replacement?
The unit uses a self-recharging NiMH battery designed to last the service life of the module under normal operating conditions; no routine battery maintenance is required.

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.