Intermatic ET1725C Electronic Timer

The Intermatic ET1725C Electronic Timer is a high-performance 7-day programmable time switch designed for commercial HVACR and electrical contractors. Engineered as an easy upgrade from mechanical clocks, this 30A DPST electronic timer features two independent circuits, allowing for custom scheduling of interior lighting, exterior signage, or motor-driven equipment like electric pumps. It operates on a universal 120-277 VAC input, which you can set via a physical selector switch on the board, eliminating the need to stock multiple fixed-voltage units. With a NEMA 1 indoor metal enclosure and to-the-minute accuracy, this unit supports 28 setpoints (14 ON/14 OFF events), ensuring precise load control across a 7-day cycle. The integrated automatic daylight saving time adjustment and non-volatile EEPROM memory ensure your scheduling remains intact even during extended power losses, while the user-replaceable AAA batteries provide consistent timekeeping backup for years.

• Multi-Voltage Versatility: Field-adjustable selector switch supports 120, 208, 240, and 277 VAC applications.
• Dual-Circuit Control: Configurable as 2-SPST or DPST contact form to manage multiple loads with a single device.
• Industrial Durability: Housed in a heavy-duty, lockable steel enclosure with multiple knockouts for flexible conduit entry.
• Manual Override: Features temporary or permanent manual override buttons to bypass the schedule without losing programmed data.
• Precision Scheduling: Minimum 1-minute switching increments and 2-second pulse feature for bell ringing or mechanically held contactors.

How do I handle voltage selection?
Before wiring, move the internal selector switch to match your line voltage (120, 208, 240, or 277 VAC). The default factory setting is typically 120 VAC.

Can this timer control inductive loads?
Yes, it is rated for 30A inductive/resistive loads and is capable of handling motors up to 1 HP at 120 VAC or 2 HP at 240 VAC.

What happens if the power goes out?
The unit utilizes two AAA alkaline batteries to maintain the clock and schedule. The non-volatile EEPROM memory ensures your custom programs are protected indefinitely regardless of battery status.

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.