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Intermatic T104M Mechanical Time Switch – Reliable 24‑Hour Load Control

Intermatic T104M Mechanical Time Switch – Reliable 24‑Hour Load Control

Zachary Rojas |

When dependable, simple timing control is needed for pool pumps, heaters, lighting, or motors, the Intermatic T104M steps up. This single-mechanism, double-pole time switch offers rugged performance, customizable scheduling, and a built-for-long-life design—ideal for residential and light commercial electrical systems.


🔧 Core Features & Specs

  • 24‑Hour Mechanical Dial
    Allows up to 12 ON/OFF cycles per day with easy-to-set tripper tabs and minimum one-hour intervals.

  • DPST Switching
    Double-pole design handles both hot legs in 208–277 VAC systems—perfect for lighting, pumps, heaters, or motors.

  • High Load Ratings
    Supports up to 40 A resistive or inductive loads per pole (including HID/LED), and motor loads up to 5 HP at 240 VAC.

  • Manual Override Control
    A handy lever lets you bypass the timer for temporary ON/OFF control.

  • Rugged Construction
    Fits standard mechanical enclosures and uses secure teeter-type terminals for multiple connections.

  • Industrial‑Grade Durability
    Rated to operate between -40°F and 130°F and certified to UL and CSA standards.

  • Includes Trippers
    Ships with one ON and one OFF tripping tab; supports adding up to 12 total trippers.


⚙️ Why It Stands Out

  • Simple and Transparent Operation – No programming needed; just set the time and switch trippers, and the dial turns continuously for reliable day-to-day control.

  • Built Tough – Designed for pool automation panels, lighting systems, feeders, and pumps—handles hefty current demands.

  • Flexible & Serviceable – Standard sizing fits most enclosures, and the mechanical switch is highly serviceable—easy to replace without tossing the whole unit.


🏠 Ideal Applications

  • Automation for pool pumps and heaters

  • Indoor or outdoor lighting schedules

  • Backup or secondary timers in systems with IntelliCenter or OCPs

  • Machinery and irrigation pump scheduling


✅ Final Take

If you're looking for a robust, reliable 24-hour time control for mid-to-high-voltage systems, the Intermatic T104M has you covered. With double-pole switching, motor-grade durability, and simple programming, it's a versatile solution for pool, landscape, and industrial load control.

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