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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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On the Pentair MasterTemp 125 461059 Heater diagram
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Other parts on the same Pentair MasterTemp 125 461059 Heater
The OEM Pentair Fireman's Switch Fuse 1.25 Amp 32850-0099 is a safety fuse. A time clock controlling the filter pump should have a low-voltage Fireman’s Switch that switches off the heater at least 15 minutes before shutting off the pump. The fuse for the Fireman’s Switch is a 1.25 Amp 1¼ x ¼” fast blow fuse. This OEM Pentair Fireman's Switch Fuse 1.25 Amp 32850-0099 is compatible with most Pentair MasterTemp, Sta-Rite Max-E-Therm and ETI 400 Natural Gas Swimming Pool Heaters.
- Essential Safety Fuse: Designed to ensure safe operation by managing the timed shutdown of the heater before the pump, enhancing overall pool safety.
- Precise Specifications: This is a 1.25 Amp 1¼ x ¼” fast blow fuse, specifically tailored for optimal performance in the Fireman’s Switch configuration.
- Timed Safety Mechanism: Works with a time clock controlling the filter pump to switch off the heater at least 15 minutes prior to the pump shutting down, protecting the system from overheating.
- OEM Compatibility: This original equipment manufacturer (OEM) part is compatible with most Pentair MasterTemp, Sta-Rite Max-E-Therm, and ETI 400 Natural Gas Swimming Pool Heaters, ensuring reliability and perfect fit.
- Enhances Heater Safety: A crucial component in maintaining the safe and efficient operation of your pool heater, ensuring that the equipment functions properly and safely.
- (1) Pentair 32850-0099 Fireman's Switch Fuse
- Pentair MasterTemp Heaters
- Pentair Sta-Rite Max-E-Therm Heaters
- Pentair ETI 400 Heaters

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