Intermatic T104P 24-Hour Mechanical Time Switch – 208-277 VAC, DPST, Indoor/Outdoor Plastic Enclosure

Overview

The Intermatic T104P is a compact, dependable 24‑hour mechanical time switch designed to bring automation to everyday loads. With two poles and a DPST contact form, it provides straightforward daily control for a range of devices in both indoor and outdoor settings.

Direct daily control and flexible scheduling

Key timing capabilities let you schedule up to 12 ON/OFF operations per day. Each ON or OFF period requires at least one hour, giving you predictable, simple intervals for lights, fans, pumps, or other equipment. A manual override lets you run or halt a program on demand.

• Direct 24-hour control of most loads
• Up to 12 ON/OFF operations each day with minimum ON/OFF times of one hour
• Manual override
• One ON and one OFF tripper included

Technical snapshot

Voltage and power handling are built for reliability: 208–277 VAC input, 40 A max, with 2 horsepower at 120 V and 5 horsepower at 240 V. The enclosure is durable plastic rated for outdoor exposure (NEMA 3R) and is suitable for indoor or outdoor installations. The unit supports a 60 Hz frequency and a 24-hour cycle, with a programming range from 1 to 23 hours.

• Voltage: 208–277 VAC
• Current: up to 40 A, DPST form
• Time range: 1–23 hours, 24-hour cycle
• Enclosure: plastic, NEMA 3R rated
• Trippers: 2 included (one ON, one OFF)

Practical use cases

Ideal for automating exterior lighting, indoor fans, pool pumps, or HVAC-related equipment. Use is straightforward in garages, workshops, or protected outdoor areas where resilience to weather and reliable timing helps reduce manual operation and energy use.

Installation notes

The Intermatic T104P is a direct replacement option for compatible timers and is designed for simple mounting and wiring. Ensure the supply matches the rated voltage and that the enclosure remains accessible for manual adjustments and servicing.