Coates Heater 3P Contactor [50A] [120v] (21000900)

Electrical: Relays/Contactors
Coates Heater Company
21000900
47-225-1705
COMPARE AT $136.14
OUR PRICE $108.63
STOCK STATUS IN STOCK Ships Usually the Same/Next Business Day
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Under 25 lbs. Contiguous USA
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A contactor controls the switching of electrical power within the heater, and this Coates 3-pole contactor is designed for compatible 50 amp, 120 volt applications where the original switching component has failed or become unreliable. When a heater loses consistent switching performance, overall operation can feel erratic and less dependable than it should.

The 3-pole design, 50 amp rating, and 120 volt relationship give this part practical value because contactors work best when they match the original load and control-side requirements closely. A properly selected replacement helps restore intended power control and supports more reliable heater function.

This kind of replacement is especially useful when the rest of the heater remains serviceable and the weakness is centered on the contactor itself. That keeps the repair direct while restoring a key electrical control component.

Installed in the proper setup, this contactor helps restore dependable switching performance and contributes to a stronger heater repair overall.

  • 3-pole contactor for compatible Coates heater applications
  • 50 amp rating and 120 volt relationship support intended fit
  • Helps restore dependable electrical switching control
  • Useful when original contactors are worn or failed
  • Improves operational confidence and repair quality
Coates Heater Company – Electric Pool Heaters, Spa Heaters and Heating Systems
Who is Coates Heater Company?

Coates Heater Company is a leading manufacturer of electric heating solutions for pools, spas, and industrial applications. With over 60 years of experience, Coates has built a strong reputation for producing durable, high-performance electric heaters designed for consistent and reliable operation. Their products are widely used in residential, commercial, and specialty environments where precise temperature control is essential.

What products does Coates Heater Company specialize in?

Coates specializes in electric pool heaters, spa heaters, and industrial heating systems. Their product lineup includes compact residential heaters, high-capacity commercial units, and corrosion-resistant models designed for demanding applications. These heaters are engineered to provide efficient, consistent heating while supporting a wide range of pool and spa system configurations.

Why choose Coates Heater Company parts for your pool or spa?

Coates heaters are known for reliability, longevity, and precision temperature control. Their electric heating systems are built with high-quality materials designed to withstand continuous use and harsh water conditions. Pool professionals and homeowners choose Coates for dependable heating performance, easy maintenance, and consistent water temperature management.

How do you identify and choose the correct Coates Heater Company part?

To select the correct Coates heater or component, it’s important to match system requirements such as kilowatt (kW) rating, voltage, flow rate, and installation type. Reviewing product specifications and existing system labels ensures proper compatibility and performance. Choosing the right heater helps maintain efficient operation and optimal water temperature.

Need help finding the right Coates Heater Company part?

At Bath & Spa Parts Online, we carry a wide selection of Coates Heater Company pool, spa, and bath parts ready to ship. Can’t find what you need? Contact our Product Specialists at 800-918-9143, use the live chat, or visit our Contact Us page. For installation guides, part diagrams, and troubleshooting resources, visit the Bath & Spa Parts Online Knowledge Base for expert support.

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