Type 1N Terminal Box

• NEMA 1 rating
• For heaters having no thermostat
• Supplied with all Preconfigured and Stock Heaters
• All flange sizes
• See Learn More for flange sizes and measurements

Type 2N Terminal Box

• NEMA 4 rating
• For heaters having no thermostat
• 3 inch flanges
• Requires the use of the cover gasket

Type 3N Terminal Box

• NEMA 4 rating
• For heaters having no thermostat
• 4 and 5 inch flanges
• Requires the use of the cover gasket

Type 4N Terminal Box

• NEMA 4 rating
• For heaters having no thermostat
• 6 through 14 inch flanges
• See Learn More for flange sizes and measurements

NEMA 12

Contact Tempco

Screw Terminals only

No Housing is needed for this heater.

Request Other Electrical Terminations

If your filter selections do not return your desired results from our standard configurations, please continue to Refine Results for your specifications.

When you are finished, save your selections with the Save Results for Quote button (at the right of this page) and choose Request for Quote for further assistance.

DPST Thermostat

Double Pole – Single Throw Thermostats: Style B, Style C

SPST Thermostat

Single Pole – Single Throw Thermostats: Style A, Style D, Style F

Request Other Thermostat

If your filter selections do not return your desired results from our standard configurations, please continue to select your Specifications.

When you are finished, save your selections in the Wish List (using the button at the right of this page) and follow the steps to submit them to Tempco.

Stuffing Box Assembly

Products Temporarily Unavailable for Individual Purchase

The Stuffing Box Assembly is used to seal the thermostat capillary when the sensing bulb (3/8" max. OD) is immersed directly in a liquid rather than in a thermowell. The Stuffing Box consists of six slotted washers used to compress a graphite packing into a 3/8" NPT male pipe thread fitting. Assembly Instructions Feed sensing bulb through hole in upper and lower fitting. Insert washers and packing into top cavity of lower fitting. Upper fitting then screws into lower fitting, creating the seal.
Part Number: TST-109-101

Thermowells

Stainless Steel or Plain Steel: Thermowells provide protection for bulb and capillary sensors. They are supplied with a 1/2" NPT male thread for mounting and a 3/8" NPT internal thread that can be used with the stuffing box assembly to secure the capillary to the well. ID: 0.50", OD: 0.56

Flow Control Baffles

For flange heaters used in circulation tanks, to aid heat transfer by forcing the liquid or gas back and forth across the elements. Baffles can be custom designed and positioned for your application.

Terminal Housing Standoff

The electrical housing is separated from the flange by an air gap (six-inch standard) to lower the ambient temperature of the electrical wiring. This option is used on flanged immersion heaters where the flange temperature exceeds 482°F (250°C).