Intermatic T7402B Timer

The Intermatic T7402B is a robust 7-day mechanical time switch engineered for high-capacity industrial and commercial applications requiring 4PST (Four-Pole Single-Throw) switching. Operating on a 208-277V supply, this heavy-duty timer supports 40 Amp resistive loads per pole, making it an ideal solution for managing complex HVACR systems, multi-circuit lighting arrays, and industrial motors. The 7-day dial allows for distinct daily scheduling, providing the flexibility needed for facilities with varying weekend occupancy. Built with a NEMA 3R steel enclosure, the unit is rated for both indoor and outdoor installations, resisting rain and sleet. The manual override switch permits immediate circuit testing or system cycling without disrupting the programmed schedule. This timer is designed for permanent installation, featuring 1/2-inch and 3/4-inch knockouts for straightforward conduit integration. When configuring multi-phase equipment, the 4PST configuration ensures simultaneous control across all legs of the circuit for synchronized operation and equipment longevity.

• 40 Amp Inductive Rating: Handles high-inrush currents associated with industrial motors and heavy electrical loads without contact pitting.
• 4PST Switching: Enables simultaneous control of four separate circuits or multiple legs of a three-phase system from a single time clock.
• Weather-Resistant Housing: The NEMA 3R enclosure ensures reliable performance in mechanical rooms or exposed outdoor environments.
• Precise Scheduling: Minimum ON/OFF times of 3 hours allow for tailored energy management and reduced operational overhead.
• Simplified Maintenance: Features captive screws and a removable clock motor for fast field service and troubleshooting.

Can the Intermatic T7402B be used for 3-phase motor control?
Yes, the 4PST configuration is frequently used by technicians to switch all three legs of a 3-phase motor, with the fourth pole available for a neutral or auxiliary signaling circuit.

What is the maximum number of operations per day?
The 7-day dial accepts up to 14 multi-colored trippers, allowing for a minimum of one set of ON/OFF operations per day for varied weekly cycles.

Is this unit compatible with LED lighting loads?
While optimized for resistive and inductive loads, the 40 Amp rating provides substantial overhead for LED driver inrush, though total circuit wattage should be calculated against the 40A per pole limit.

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.