Hi-Limit Switch, Pentair Max-E-Therm/MasterTemp, 1/4″ – 18npt | 42001-0063S

Hi-Limit Switch, Pentair Max-E-Therm/MasterTemp, 1/4″ – 18npt | 42001-0063S

Safeguard Your Pentair Heater with the Reliable Hi-Limit Switch

Product Overview

The Pentair Hi-Limit Switch, model 42001-0063S, is a critical safety component designed to protect your hot tub’s heating system. This replacement switch automatically cuts power to the heater if the water temperature exceeds safe limits, preventing potential damage or hazardous situations.

Detailed Specifications

• Part Number: 42001-0063S
• Compatibility: Pentair Max-E-Therm and MasterTemp heaters
• Thread Size: 1/4″ – 18npt
• Temperature Rating: 135°F
• Voltage: Compatible with 230V systems
• Warranty: Manufacturer’s warranty

Exploded parts diagrams: This part is shown as item #8 on the StaRite Max-E-Therm SR-200, 333, 400 Electrical System; item #6 on the Pentair MasterTemp Gas Heater Electrical System exploded parts diagrams.

🔧 StaRite Max-E-Therm SR-200, 333, 400 Electrical System – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.

Reliable Temperature Monitoring

The Pentair Hi-Limit Switch utilizes a sensitive thermal sensor to constantly monitor the water temperature in your hot tub. If the temperature reaches 135°F, the switch will immediately interrupt power to the heater, ensuring your spa remains within a safe operating range.

Automatic Safety Cutoff

Unlike manual reset hi-limit switches, this Pentair component provides an added layer of protection by automatically cutting power to the heater in the event of a temperature spike. This eliminates the need for manual intervention, enhancing the overall safety of your hot tub system.

Easy Integration

Designed as a direct replacement for Pentair Max-E-Therm and MasterTemp heaters, the Hi-Limit Switch can be easily integrated into your existing hot tub setup. This allows you to upgrade or repair the safety systems with minimal disruption to your spa’s operation.

Specifications Table

Specification	Value
Part Number	42001-0063S
Compatibility	Pentair Max-E-Therm and MasterTemp heaters
Thread Size	1/4″ – 18npt
Temperature Rating	135°F
Voltage	Compatible with 230V systems
Warranty	Manufacturer’s warranty

Safeguard your Pentair hot tub with the reliable Hi-Limit Switch. Ensure the safety and longevity of your backyard oasis with this essential replacement component

🔧 Exploded diagram and parts

This part belongs to the StaRite Max-E-Therm SR-200, 333, 400 Electrical System assembly. Everything listed below is something we stock for it, and the numbers match the diagram.

Complete tools

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