The Invensys 275-3290-00 is designed to shut off power to the heater in order to prevent overheating and potential damage. This thermostat is single pole rated at 25 amps with a temperature rating set at 121°F. It has a 12" capillary length and 5/16" bulb thickness. To ensure that the thermostat functions properly, be sure to install the bulb in a dry well or groove tube at or immediately before the heater.

It is important to note that this hi-limit is a safety device and should not be adjusted by anyone other than a qualified technician. If it is found to be out of calibration, do not try to perform a field adjustment. Replace the hi-limit with a new one for best results. Following these safety guidelines will help ensure that your spa remains safe and secure.

• Hi-Limit Application - Generic
• Hi-Limit Style - Capillary
• Bulb Diameter - 5/16"
• Bulb Length - 2-3/4"
• Capillary Length - 12"
• Pole/Throw - Single Pole Single Throw (spst)
• Hi-Limit Amperage - 25A
• Electrical Connection - Screw Terminal

Additional information:
Alternate part numbers - 47-335-1082, 275329000