Pentair Max-E-Therm/MasterTemp Hi-Limit Switch, 1/4" NPT (42001-0063S)

Heater Parts
Pentair/Sta-Rite
42001-0063S
47-102-1309
COMPARE AT $135.77
OUR PRICE $108.19
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Under 25 lbs. Contiguous USA
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Protect compatible Max-E-Therm and MasterTemp heaters from excessive temperature conditions with this 1/4" NPT hi-limit switch. The hi-limit switch is an important safeguard that helps monitor heat levels and interrupt operation when temperatures move outside the acceptable range.

This replacement is commonly used when troubleshooting heater shutdowns, overheating concerns, or failed safety-switch readings. It should be installed with attention to thread size, placement, and the heater’s service documentation.

  • Hi-limit switch with 1/4" NPT configuration
  • Helps protect against overheating conditions
  • Supports safe heater operation and diagnostics
  • Fits select Max-E-Therm and MasterTemp models
  • Professional installation is strongly recommended
Pentair / Sta-Rite – Pool Pumps, Filters, Heaters and Sta-Rite Replacement Parts
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To select the correct Pentair / Sta-Rite component, it’s important to identify your equipment model and match part numbers for pumps, filters, or internal components. Reviewing specifications such as horsepower, connection size, and system compatibility ensures proper fit and performance. Choosing the right part helps restore efficiency and extend equipment life.

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