Hi-Limit, Thermodisc, DPST, Screw Terminal, Surface Mount | 34-0058-K
Safeguard Your System with the Dual-Pole Thermodisc Hi-Limit Switch
Product Overview
The Hi-Limit Switch, Thermodisc (model 34-0058-K), is a critical safety component designed to protect your heating system. This surface mount replacement switch features dual-pole operation and automatically cuts power to the heater if the water temperature exceeds 121°F, preventing potential damage or hazardous situations.
Detailed Specifications
- Part Number: 34-0058-K
- Manufacturer: Thermodisc
- Temperature Rating: 121°F
- Amperage: 50A
- Voltage: 240V
- Switch Type: DPST (double pole, single throw)
- Mounting: Surface mount
- Terminals: Screw
- Warranty: Manufacturer’s warranty
Exploded parts diagrams: This part is shown as item #7 on the Raypak 5.5kW & 11.0kW Heaters; item #7 on the Raypak ELS 552-2 & 1102-2 Heater Models (11/1983 – pres); item #5 on the Waterpik Laars Elecktra Star Mfg. 1995-2000; item #23 on the Waterpik Laars Elecktra II Mfg. 1985-1995; item #8 on the Waterpik Laars Spaworks Electric in-line heater; item #2 on the Purex Islander / Manatee Electric Spa Heater exploded parts diagrams.
🔧 Raypak 5.5kW & 11.0kW Heaters – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| – | Element Gasket, Raypak ELS 552-2/1102-2, 5 each |
| – | Element Gasket, Raypak ELS 552-2/1102-2/5.5k with 11.0kW |
| – | Heater, RayPak SpaPak, ELS 552-5, 230v, 5.5kW, Complete |
| – | Heater, RayPak, SpaPak, ELS 1102-2, 230v, 11kW, Complete |
| 15 | Wire Kit, Raypak ELS |
| 14 | Dial Plate, Raypak ELS |
| 13 | Knob Stop, Raypak ELS/53A/55A/105A/105B/153/155A/183A/185A |
| 12 | Thermostat Knob,Raypak 53/ELS/53A/55A/105A/105B/151/153,Blk |
| 11 | Indicator Light, Raypak ELS |
| 10 | Toggle Switch, Raypak ELS/53A/151/153/155A/183A/185A, SPST |
| 9B | Thermostat,Raypak ELS/53/105A/105B/153/155A/183A/185B/RP2100 |
| 9A | Thermostat, Raypak |
| 8 | Contactor, DP, 40A FLA, 230v |
| 7 | Hi-Limit, Thermodisc, DPST, Screw Terminal, Surface Mount ◀ this part |
| 6 | Pressure Switch 3029, 25A, Tecmark, 1/8"mpt, SPNO |
| 5 | 46-197-W001K5 |
| 4 | Sensor Well, Raypak ELS |
| 3 | 46-197-W001K3 |
| 1 | 46-197-W001K1 |
Reliable Temperature Monitoring
The Thermodisc Hi-Limit Switch utilizes a sensitive thermal sensor to constantly monitor the water temperature. If the temperature reaches 121°F, the switch will immediately interrupt power to the heater, ensuring your system remains within a safe operating range.
Dual-Pole Safety Cutoff
This Hi-Limit Switch provides enhanced protection by employing a dual-pole design. In the event of a temperature spike, both poles will automatically cut power to the heater, further enhancing the overall safety of your system.
Convenient Surface Mount Design
The surface mount configuration of the Thermodisc Hi-Limit Switch allows for easy integration into your system, simplifying the installation process and ensuring optimal temperature monitoring.
Specifications Table
| Specification | Value |
|---|---|
| Part Number | 34-0058-K |
| Manufacturer | Thermodisc |
| Temperature Rating | 121°F |
| Amperage | 50A |
| Voltage | 240V |
| Switch Type | DPST |
| Mounting | Surface mount |
| Terminals | Screw |
| Warranty | Manufacturer’s warranty |
Safeguard your heating system with the reliable Thermodisc Hi-Limit Switch, model 34-0058-K. Enjoy the enhanced safety of this dual-pole, surface mount replacement component






















