Thermostats

AT1 Air Thermostats operate from the temperature of ambient air, activated by the sensor bulb inside the housing. This Air Thermostat is suitable for a wide variety of control applications including frost protection, space heating and anti-condensation.

SPECIFICATIONS

• Temperature ranges: A: -5oC to +40oCB: +20oC to 120oC (ST only)
• Rating: 16 amps at 240 volts
• Housing Standard: See through lid, housing to IP65
• Housing type: Polycarbonate
• Max. ambient temp. at housing: 80oC
• Housing size 125 x 125 x 75 mm
• Switching medium Snap action single pole
• Capillary length: 1.5m (ST only)
• Bulb size: A : 95 x 7 mm (ST only)B : 75 x 5 mm (ST only)
• Differential 1.5oC - 3.0oC (ST)1.5oC (AT1)
• Accuracy: +/- 1.5oC
• Electrical connection: 6 way terminal block
• Operation indicator: Neon lightsRed : Power onAmber : Contacts made

ST Capillary Thermostats are designed to provide accurate control by constantly monitoring the pipe surface temperature and are recommended for use on plastic pipes and where substances are very sensitive to temperature.

The stainless steel sensing bulb contains liquid, which expands and contracts as the temperature fluctuates. This operates through the capillary to a diaphragm operating the contacts.

SPECIFICATIONS

• Temperature ranges: A: -5oC to +40oCB: +20oC to 120oC (ST only)
• Rating: 16 amps at 240 volts
• Housing Standard: See through lid, housing to IP65
• Housing type: Polycarbonate
• Max. ambient temp. at housing: 80oC
• Housing size : 175 x 125 x 75 mm
• Switching medium Snap action single pole
• Capillary length: 1.5m (ST only)
• Bulb size: A : 95 x 7 mm (ST only)B : 75 x 5 mm (ST only)
• Differential 1.5oC - 3.0oC (ST)1.5oC (AT1)
• Accuracy: +/- 1.5oC
• Electrical connection: 6 way terminal block
• Operation indicator: Neon lightsRed : Power onAmber : Contacts made