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Mechanical Thermostat

STO 011/STS 011
Thermostat
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The mechanical thermostat is a two state regulator with small hysteresis. The setting wheel has an anti frost assurance. The housing ensures an optimized air circulation around the bimetal.

  • STO 011: Thermostat (NC); contact breaker for regulating heaters. The contact opens when temperature is rising.
  • STS 011: Thermostat (NO); contact maker for regulating of filter fans and heat exchangers or for switching signal devices when temperature limit has been exceeded. The contact closes when temperature is rising.
  • Switching difference 4K (±3K tolerance)
  • Sensor element thermostatic bimetal
  • Contact type snap-action contact
  • Service life > 100,000 cycles
  • Max. switching capacity 250VAC, 10 (2) A / 120VAC, 15 (2) A; DC 30W at 24VDC to 72VDC
  • Max. inrush current AC 16A for 10 sec.
  • Connection 2-pole terminal, clamping torque 1Nm max. Rigid/stranded1 wire 2.5mm (AWG 14)
  • Mounting clip for 35mm DIN rail, EN 60715
  • Casing plastic according to UL94V-0, light grey
  • Dimensions 70 x 33 x 42mm
  • Weight approx. 50g solid/stranded² wire – AWG 14 max. (2.5 mm²)
  • Fitting position variable
  • Operating/Storage temperature -45 to +80°C (-49 to +176°F)
  • Operating/Storage humidity max. 90% RH (non-condensing)
  • Protection type IP20
  • Approvals VDE, UL File No. E164102, EAC

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