💧 Eaton Thermostat 275-3123-01
Made by Eaton, manufacturer part number 275-3123-01.
Thermostats Single pole rated at 25 amps with max temp rating at 107°F. 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 oneCapillary Length: 12″Bulb Thickness: 5/16″
📏 Specifications
| Specification | Value |
|---|---|
| Brand | Eaton |
| Manufacturer part number | 275-3123-01 |
| Catalog description | Eaton Thermostat 275-3123-01 |
Eaton Thermostat 275-3123-01 Keeping you comfortable, protected and connected Mechanical hi-limits & thermostats from Eaton’s Crouse-Hinds Division are ran at 50/60hz and are used for heavy duty line voltage to control fan coils, motor starters, valves, contactors and circulator motors in heating and/or cooling systems.
Additional Information
| Type | Standard |
| Bulb Diameter | 5/16" |
| Cable Length | 12" |
Alternate Part Numbers
- 2-05-0149
- 70-08312 (Therm)
- 275-2900-00
- 275-2830-01 (Invensys)
- 55-1004
- 47-335-1061
🔧 Exploded diagram and parts
This part belongs to the Waterpik Laars Spaworks Electric in-line heater assembly. Everything listed below is something we stock for it, and the numbers match the diagram.
| No. | Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|---|
| 8 | ![]() |
Hi-Limit, Thermodisc, DPST, Screw Terminal, Surface Mount | 34-0058-K | 16 in stock | $90.11 | Add to cart |
| 14 | ![]() |
Tecmark Pressure Switch 3902 | 3902 | 96 in stock | $33.66 | Add to cart |
Exploded parts diagram: This part is shown as item #7 on the Waterpik Laars Spaworks Electric in-line heater exploded parts diagram.
🔧 Waterpik Laars Spaworks Electric in-line heater – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| 21 | 46-295-W003D21 |
| 20 | 46-295-W003D20 |
| 14 | Pressure Switch 3902, 1A, Tecmark, Universal, SPNO, w/Brass |
| 12 | 46-295-W003D12 |
| 9 | Flange Element,5.5kW,Laars Spa Works,2-1/2",115v/230v,T-Well |
| 8 | Hi-Limit, Thermodisc, DPST, Screw Terminal, Surface Mount |
| 7 | Thermostat, Invensys, 5/16", 12", SPST, 25A ◀ this part |
| 5 | 46-295-W003D5 |
| 4 | O-Ring, Buna-N, 6-7/8" ID, 1/4" Cross Section,Generic,O-679 |
| 3 | Temperature Control Stop Plate, Zodiac Laars Spaworks |
| 2 | 46-295-W003D2 |
| 1 | 46-295-W003D1 |









