Pentair Max-E-Therm/MasterTemp Hi-Limit Switch, 1/4" NPT (42001-0063S) crosses Designed for pool cleaner repair

Designed for pool cleaner repair and maintenance

This Hayward AquaRite PCB replacement helps restore system control when the original board is damaged

A cartridge and grid cleaner helps remove buildup from compatible filtration components so they can be cleaned more effectively during routine maintenance

filtration can steadily become less effective than it should

and SPST relationship gives this timer its practical value because time-control components work best when they match the original switching style and electrical role closely

Pentair Max-E-Therm/MasterTemp Hi-Limit Switch, 1/4" NPT (42001-0063S) crosses Designed for pool cleaner repairProtect 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