Pentair Max-E-Therm/MasterTemp Hi-Limit Switch, 1/4" NPT (42001-0063S) lighting When a diverter becomes difficult

When a diverter becomes difficult to turn

Including the gasket helps support cleaner installation and dependable sealing at the mounting point

Replacing the correct component can help restore normal operation

0 kW heater format

Designed for compatible hull cleaner applications

Pentair Max-E-Therm/MasterTemp Hi-Limit Switch, 1/4" NPT (42001-0063S) lighting When a diverter becomes difficultProtect 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