Robertshaw ST13-70K Thermostat - Hot Water / Single Solar SPST 50-70 OTC 88 ST1301133

Sale price$44.97 + Freight and GST


Model ST1301133 Robertshaw P/N: ST13-70K

Series Application Hot Water Surface Thermostat with High Limit
Temperature Range 50°C to 70°C
Application Single
Differential 8°C (± 4°C)


Adjustable temperature For single element and solar applications. 

SPST 240V 30A

Temperature range: 50 to 70 degrees Celsius

Replaces WSHT200 And W1M200

 Used For Mains Pressure Electric Water Heaters.

The Robertshaw brand ST1301 Solar Thermostat is currently the only thermostat manufactured and specified for Solar Hot Water Heaters.

This Solar Thermostat has an auto-reset Over-Temperature Cut-out (OTC) for high yield sunshine days, taking the boost heater out of circuit. It's Auto Reset so you don't have to get up on the roof to turn it back on! The OTC protects the system against no-fault over temperature tripping. When the water temperature in the tank reduces to a normal operating level, the auto reset occurs and the heater can once again use the booster heater.

The ST1301 has a unique internal fuse, protection that is designed especially for Solar Water Heaters. This internal fuse is extra protection against any electrical malfunction , but is a one use fuse. If the fuse activates, the thermostat will need to be replaced. 

– Hot water cylinder / heater thermostat
– Surface mount
– Has red plastic backing plate
– Eco electric with adjustable temperature range 50-80 degrees celsius
– 30A 240V
-Suits solar heating and wetback hot water systems


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