Skip to content

Water Heating Contact Thermostat 50-80C Manual Reset

SKU ST551
In stock: 100+
  • Description
  • Key Features
  • Technical Specifications

Designed for mains pressure domestic hot water systems, this manual reset thermostat operates at 30A with a temperature range of 50° to 80°C. It features safety cut-out at 88°C double-pole single-throw (DPST) configuration and a single-pole single-throw (SPST) for reliable temperature control and protection.

ST Thermostat Wiring Diagram

  • Temperature control range: Operates between 50 °C to 80 °C (manual reset). 

  • Safety cut-out: Dual-pole safety shut-off at 88 °C provides added protection. 

  • 30 A switching rating: Suitable for robust control in domestic hot water systems. 

  • Single-pole SPST operation with dual-pole cut-out ensures reliable performance. 

  • Compatible models: Also known as ST12-80, ST1204133, ST1205134, ST1202134 

Specification Details
Temperature Range 50 °C – 80 °C (manual reset)
Safety Cut-Out 88 °C (DPST)
Contact Configuration SPST (activation), DPST (safety cut-out)
Switching Rating 30 A
System Compatibility Mains-pressure domestic hot water systems
Model Equivalents EWT1L2-551, ST12-80 (as specified)