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Compact Thumbwheel Thermostat STO 011 / STS 011

The ST 011 thermostat is an SPST regulator with small hysteresis. The housing design ensures optimized air circulation around the sensor element. Thermostat NC (normally closed): Thermostat opens on temperature rise (red thumbwheel) – for regulating heaters or for switching signal devices when the temperature has fallen below the minimum value. Thermostat NO (normally open): Thermostat closes on temperature rise (blue thumbwheel) – for regulating filter fans, heat exchangers, cooling devices, or for switching signal devices when temperature limit has been exceeded.

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  • Adjustable thumbwheel setting
  • Compact design
  • Small hysteresis
  • High switching capacity
  • DIN rail mountable

  • Adjustable thumbwheel setting
  • Compact design
  • Small hysteresis
  • High switching capacity
  • DIN rail mountable

  • Switching difference : 7 °F (4 K) ± 5.4 °F (3 K) tolerance
  • Sensor element : Thermostatic bimetal
  • Contact type : Snap-action contact
  • Dimensions : 2.76 x 1.3 x 1.65” (70 x 33 x 42 mm)
  • Connection : 2-pole terminal, clamping torque 1 Nm max.: solid/stranded1 wire - AWG 14 max. (2.5 mm²)
  • Housing : Plastic, UL 94V-0, light grey
  • Storage temperature : -49 to +176 °F (-45 to +80 °C)
  • Protection class : IP20
  • Approvals : UL File No. E164102, VDE, GOST-R

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