1NO+1NC Double Red-Blue PTM Series Thermostat
The PTM122 combines EMAS's heating and cooling thermostat functions into one dual-contact unit, giving you both fan control and heater control from a single device rather than fitting a separate PTM110 and PTM111. That's a genuine space and wiring saver where a panel needs both condensation prevention and overheat protection.
Combined thermostat to maintain control panel cabinet temperatures.
- 1 x Normally Open contact for cooling and ventilation. Direct switching of fans
- 1 x Normally Closed contact for heating and moisture control. Direct switching of elements
Typical uses: electrical control panels, electrical cabinets, server cabinets. Cooling variable speed drive enclosures.
Technical Details
Frequently Asked Questions
How is this different from using separate PTM110 and PTM111 units?
The PTM122 combines both functions into one device with one dial, saving panel space and installation time compared to fitting two separate single-function thermostats.
Can I set different temperature thresholds for heating and cooling?
Check the specific dial mechanism for this model — combined units typically use a single setpoint dial with a built-in differential between the heating and cooling trip points, so confirm the exact behaviour matches your panel's requirements.
Can this switch a fan and heater directly, or do I need contactors?
At up to 10A (230V AC) it can switch most panel fans and heaters directly. For higher-draw loads, add a contactor or relay between the thermostat and the load.
Is this suitable for washdown areas?
It's IP20 rated, suited to standard indoor equipment rather than washdown or outdoor environments.
Industry Applications
- Electrical control panels & cabinets — combined condensation prevention and overheat protection from one device
- Server & VSD enclosures — automatic fan cooling and heater control in one unit
- Panel builders & OEMs — space-saving thermal management for standard enclosures