Product Overview

The Intermatic ITMT104R3 Mechanical Time Switch is a heavy-duty 24-hour timer designed for reliable scheduled ON/OFF control of compatible electrical loads. Built for 208–277 VAC applications and rated for 40 amps, this mechanical time switch is commonly used for pool equipment, pumps, lighting, heaters, fans, and other heavy-duty electrical devices.

This model features a durable Type 3R metal enclosure for indoor or outdoor installation and a dependable mechanical dial design for daily scheduling. Its compact enclosure measures approximately 6.5" x 3.625" x 10.125", making it suitable for equipment pads, utility areas, and commercial or residential control applications.

Ideal For

• Pool and spa equipment control
• Pumps, lighting, heaters, fans, and HVAC loads
• Residential, commercial, and industrial applications
• Scheduled daily ON/OFF operation
• Replacing compatible Intermatic T104-style timer controls
• Installations requiring 208–277 VAC, 40A switching capacity

Key Features

• Heavy-Duty Mechanical Timer — Designed for dependable 24-hour scheduling
• 208–277 VAC Operation — Suitable for compatible higher-voltage equipment applications
• 40 Amp Capacity — Built to control heavy-duty electrical loads
• DPST Switching — Designed for double-pole single-throw control applications
• Type 3R Metal Enclosure — Suitable for indoor and outdoor use
• Manual Override — Allows equipment to be turned ON or OFF outside the programmed schedule
• Daily Scheduling — Supports multiple ON/OFF operations per day
• Included Trippers — Includes one ON and one OFF tripper for basic daily scheduling
• Compact Enclosure Size — Approximately 6.5" x 3.625" x 10.125"

Benefits

The Intermatic ITMT104R3 provides a simple, reliable way to automate compatible pool equipment and other electrical loads. Its mechanical dial design is easy to set and does not require complicated programming, making it a dependable choice for routine daily scheduling.

With a 40A rating, 208–277 VAC compatibility, and a rugged Type 3R metal enclosure, this time switch is well suited for demanding pool, spa, outdoor, and equipment-control environments. It helps reduce the need for manual equipment operation while supporting consistent daily run times.

Specifications

Customer-Facing Q&A

Q: What is the SKU for this time switch?
A: The SKU is ITMT104R3.

Q: What is the manufacturer model number?
A: The manufacturer model number is T104R3.

Q: What is the UPC / barcode?
A: The UPC / barcode is 078275026315.

Q: What voltage does this timer support?
A: This mechanical time switch is designed for 208–277 VAC applications.

Q: What is the amperage rating?
A: It is rated for 40 amps.

Q: Can this be used outdoors?
A: Yes. This model includes a Type 3R metal enclosure, making it suitable for indoor and outdoor installations.

Q: Is this commonly used for pool equipment?
A: Yes. It is commonly used to control compatible pool pumps, pool lighting, heaters, and other equipment loads.

Q: Does it include trippers?
A: Yes. It includes one ON tripper and one OFF tripper for basic daily scheduling.

Q: Does this timer have manual override?
A: Yes. It includes a manual override feature for turning the connected load ON or OFF outside the scheduled time.

Q: Should this be professionally installed?
A: Yes. This is a high-voltage electrical control and should be installed by a qualified electrician or pool professional.