
Intermatic T104 Timer
The Intermatic T104 Mechanical Time Switch is the industry standard for reliable, 24-hour heavy-duty load control. Specifically engineered for 208-277 VAC applications, this Double-Pole Single-Throw (DPST) timer is built to handle up to 40 Amps resistive per pole, making it the go-to choice for contractors managing commercial lighting, pool pumps, and HVACR equipment. Featuring a rugged NEMA 1 indoor metal enclosure, the T104 utilizes a high-torque permanent magnet motor and teeter-type terminals to ensure secure copper wire connections. The mechanical dial allows for up to 12 ON/OFF operations per day with a 1-hour minimum interval, providing precise scheduling without the complexity of digital components. With a 5 HP motor rating at 240V, this timer offers the durability needed for high-demand inductive and tungsten loads in demanding environments.
Key Benefits- High Load Capacity: Rated for 40 Amps per pole, accommodating heavy-duty 208V-277V electrical circuits.
- DPST Switching: Provides simultaneous control of two separate power legs, essential for 240V motor and heating applications.
- Rugged Mechanical Design: Proven electromechanical gear train eliminates the risk of electronic failure and programming loss during minor power fluctuations.
- Manual Override: Integrated manual lever allows for immediate load testing and maintenance without disrupting the set schedule.
- Universal Enclosure Compatibility: The T104 mechanism fits most Intermatic metal or plastic enclosures, simplifying field replacements.
How do I wire a 240V motor to the T104?
Connect your two incoming line leads to terminals 1 and 3. Connect the two outgoing load leads to terminals 2 and 4. Ensure the timer motor leads are also connected to 1 and 3 so the clock runs continuously regardless of the switch state.
What wire gauge should be used with the 40A terminals?
The Intermatic T104 terminals accept 14 AWG to 8 AWG copper wire. For 40A circuits, 8 AWG copper is typically required to meet NEC standards and prevent terminal overheating.
Can I add more than two daily cycles?
Yes. While the unit comes with 1 set of trippers, the dial supports up to 12 ON/OFF operations per day by installing additional 156T1978A tripper pairs.
This item is not eligible for free shipping.
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.
Intermatic T104 Timer
The Intermatic T104 Mechanical Time Switch is the industry standard for reliable, 24-hour heavy-duty load control. Specifically engineered for 208-277 VAC applications, this Double-Pole Single-Throw (DPST) timer is built to handle up to 40 Amps resistive per pole, making it the go-to choice for contractors managing commercial lighting, pool pumps, and HVACR equipment. Featuring a rugged NEMA 1 indoor metal enclosure, the T104 utilizes a high-torque permanent magnet motor and teeter-type terminals to ensure secure copper wire connections. The mechanical dial allows for up to 12 ON/OFF operations per day with a 1-hour minimum interval, providing precise scheduling without the complexity of digital components. With a 5 HP motor rating at 240V, this timer offers the durability needed for high-demand inductive and tungsten loads in demanding environments.
Key Benefits- High Load Capacity: Rated for 40 Amps per pole, accommodating heavy-duty 208V-277V electrical circuits.
- DPST Switching: Provides simultaneous control of two separate power legs, essential for 240V motor and heating applications.
- Rugged Mechanical Design: Proven electromechanical gear train eliminates the risk of electronic failure and programming loss during minor power fluctuations.
- Manual Override: Integrated manual lever allows for immediate load testing and maintenance without disrupting the set schedule.
- Universal Enclosure Compatibility: The T104 mechanism fits most Intermatic metal or plastic enclosures, simplifying field replacements.
How do I wire a 240V motor to the T104?
Connect your two incoming line leads to terminals 1 and 3. Connect the two outgoing load leads to terminals 2 and 4. Ensure the timer motor leads are also connected to 1 and 3 so the clock runs continuously regardless of the switch state.
What wire gauge should be used with the 40A terminals?
The Intermatic T104 terminals accept 14 AWG to 8 AWG copper wire. For 40A circuits, 8 AWG copper is typically required to meet NEC standards and prevent terminal overheating.
Can I add more than two daily cycles?
Yes. While the unit comes with 1 set of trippers, the dial supports up to 12 ON/OFF operations per day by installing additional 156T1978A tripper pairs.
This item is not eligible for free shipping.
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.
Product Information
Product Information
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Shipping & Returns
Description
The Intermatic T104 Mechanical Time Switch is the industry standard for reliable, 24-hour heavy-duty load control. Specifically engineered for 208-277 VAC applications, this Double-Pole Single-Throw (DPST) timer is built to handle up to 40 Amps resistive per pole, making it the go-to choice for contractors managing commercial lighting, pool pumps, and HVACR equipment. Featuring a rugged NEMA 1 indoor metal enclosure, the T104 utilizes a high-torque permanent magnet motor and teeter-type terminals to ensure secure copper wire connections. The mechanical dial allows for up to 12 ON/OFF operations per day with a 1-hour minimum interval, providing precise scheduling without the complexity of digital components. With a 5 HP motor rating at 240V, this timer offers the durability needed for high-demand inductive and tungsten loads in demanding environments.
Key Benefits- High Load Capacity: Rated for 40 Amps per pole, accommodating heavy-duty 208V-277V electrical circuits.
- DPST Switching: Provides simultaneous control of two separate power legs, essential for 240V motor and heating applications.
- Rugged Mechanical Design: Proven electromechanical gear train eliminates the risk of electronic failure and programming loss during minor power fluctuations.
- Manual Override: Integrated manual lever allows for immediate load testing and maintenance without disrupting the set schedule.
- Universal Enclosure Compatibility: The T104 mechanism fits most Intermatic metal or plastic enclosures, simplifying field replacements.
How do I wire a 240V motor to the T104?
Connect your two incoming line leads to terminals 1 and 3. Connect the two outgoing load leads to terminals 2 and 4. Ensure the timer motor leads are also connected to 1 and 3 so the clock runs continuously regardless of the switch state.
What wire gauge should be used with the 40A terminals?
The Intermatic T104 terminals accept 14 AWG to 8 AWG copper wire. For 40A circuits, 8 AWG copper is typically required to meet NEC standards and prevent terminal overheating.
Can I add more than two daily cycles?
Yes. While the unit comes with 1 set of trippers, the dial supports up to 12 ON/OFF operations per day by installing additional 156T1978A tripper pairs.
This item is not eligible for free shipping.
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.












