Find your parts diagram
Sticker on the pump body (the part with the basket), not on the motor. Motor labels from Century, A.O. Smith or Regal won't match parts.
Label on the side of the tank near the base. Size is in sq ft, e.g. 420 sq ft = C4030 or CCP420.
Rating plate inside the front access panel. Note the BTU and gas type (NG or LP).
Molded into the body or printed on top. Robotic cleaners: on the power supply.
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001811F | Raypak ELS 552 & 1102 High Limit Switch
Fits these models (2)
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CA P65 Warning: Cancer and reproductive harm. www.p65warnings.ca.gov
The Raypak 001811F High Limit Switch is a critical safety control designed for use in electric pool/spa heaters such as the ELS-552-2 and ELS-1102-2 models. This surface-mounted thermal limit detects when internal temperatures exceed safe thresholds and interrupts power to protect the heater. It features a DPST (double-pole single-throw) design with screw terminals and integrates seamlessly into the heater’s control panel. Reliable and precise, this OEM switch is built to Raypak specifications and helps prevent overheating damage, electrical faults, and system failures.
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OEM-Quality High Limit Protection: Factory-specified thermal cutoff switch designed for the Raypak ELS-552 and ELS-1102 heater models, ensuring compatibility and proper safety function.
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Dual-Pole Thermodisc Design: A DPST configuration provides simultaneous interruption of both hot legs for secure shutdown under over-temperature conditions.
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Accurate Temperature Response: Calibrated sensitivity ensures correct and repeatable activation when heater temps rise above safe operating limits, reducing overheat risks.
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Screw-Terminal, Surface Mount Style: Easy to wire and install with standard screw terminals—streamlining maintenance and replacement tasks.
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Prevents Heat Damage & Electrical Hazards: Acts as a failsafe that cuts power to prevent component damage, fire risks, or dangerous overheating inside the heater.
- RayPak ELS 552-2 Heaters
- RayPak ELS 1102-2 Heaters