Protherm CB Series Contactor Enclosures are ideal for use with screwplug & flange immersion heaters with pilot duty thermostats.

NEMA 4 Powder Coated Metal Enclosure – UL Type 1, 3R, 4, 12, 13/IP66 – UL FILE #E902044
NEMA 4 High Impact Polyester & Fiberglass Enclosure (Optional)
Panel includes three pole contactor with (1) N.O & (1) N.C auxilliary contacts up to 40 amp, and (2) N.O & (2) N.C contacts on units 50 – 275 amp.
Contactor available with 120VAC, 208VAC, 230VAC & 480VAC coils.
Coil voltage is pre-wired to terminal blocks for easy wiring.
24VAC Contactor available (call)

Notice: Picture shows powder coated metal enclosure, and the optional plastic and fiberglass enclosures may differ.
Please allow 3-5 days for delivery.

Why Choose Heating Elements Plus?

Heating Elements Plus is the online sales division of Protherm Industries, Inc., based in Nashville, Tennessee. With over 40 years of experience in process and industrial heating, we are more than just a supplier—we are a trusted partner who understands the demands of your industry.

Whether you’re looking to place an order directly through our secure online store or need help from one of our engineers, we are here to provide fast, reliable, and knowledgeable service.

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Self Regulating Heat Trace Cable

Self Regulating Heat Trace Cable

Self-Regulating Heat Cable is commonly used for freeze protection of water and drain lines, and for protecting residential and commercial roofs and gutters from ice dams. The temperature rating is for the heat cable’s outer jacket and has nothing to do with the actual temperature of the cable. For most residential applications, you will choose the low temperature cable, as most water lines in the home never exceed 150 degrees.

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