Hydroquip Thermostat 12 Inch capillary; 1/4 Inch x 3.40 Inch Bulb; SPST as used in Sundance Spas and other brand hot tubs.

Thermostats
Single pole rated at 25 amps with max temp rating at 105°F.

Eaton, Mechanical, 12" Capillary x 1/4" Bulb x 3.6" Bulb Length

Best results are obtained when the bulb is installed in a dry well or groove tube at or immediately before the heater. This is a safety device! If it is found to be out of calibration, do not attempt to perform a field adjustment! Replace bad thermostat with a new one
Capillary Length: 12"
Bulb Thickness: 1/4"

This thermostat 275-3123-00 replaces 610438 , 611535 , 72026 , 904420449 , 9135-03A , 9185-112 , 930050024 , IAC275312300 , T-STAT1/4-12.

Replaces:
2-05-0055
275-3104-00
275-3116-00 (Invensys)
34-0121 (HydroQuip)
2-05-0055
55-1003
47-335-1057