Tubular Radiant Heaters – Electrical Terminations

Type 1N Terminal Box

For Use with Thermostat: N/A
For Screw Plug Heater Sizes:

• 1″
• 1-1/4″
• 2″
• 2-1/2″

Type 1T Terminal Box

For Use with Thermostat: Single Pole
For Screw Plug Heater Sizes:

• 1″
• 1-1/4″
• 2″
• 2-1/2″

Type 6T Terminal Box

For Use with Thermostat: Double Pole
For Screw Plug Heater Sizes:

• 1″
• 1-1/4″
• 2″
• 2-1/2″

Type 2N Terminal Box

For Use with Thermostat: N/A
For Screw Plug Heater Sizes:

• 1″
• 1-1/4″
• 2″
• 2-1/2″

Type 2T Terminal Box

For Use with Thermostat: Single Pole
For Screw Plug Heater Sizes:

• 1″
• 1-1/4″

Type 3T Terminal Box

For heaters with thermostat: NEMA 4 rating requires the use of the cover gasket.

Type 3T Terminal Box

For Use with Thermostat: Double Pole
For Screw Plug Heater Sizes:

• 2″
• 2-1/2″

Type 3N Terminal Box

Alternate Nema 1 Housing

For Use with Thermostat: N/A
For Screw Plug Heater Sizes:

• 1″
• 1-1/4″
• 2″
• 2-1/2″

Type 4N Terminal Box

For Use with Thermostat: N/A
For Screw Plug Heater Sizes:

• 1″
• 1-1/4″
• 2″
• 2-1/2″

Type 5N Terminal Box

For heaters having no thermostat:

Type 4T Terminal Box

For Use with Thermostat: Single Pole
For Screw Plug Heater Sizes:

• 1″
• 1-1/4″

Type 5T Terminal Box

For Use with Thermostat: Single or Double Pole
For Screw Plug Heater Sizes:

• 2″
• 2-1/2″