Thermostat switch (NO)
STS 011
The mechanical thermostat NO (normally open) closes when the temperature rises and is used to control filter fans, heat exchangers, cooling devices or to switch signal transmitters when the temperature is exceeded. The bimetal thermostat has a small hysteresis.
- Thumbwheel setting dial
- Small hysteresis enables precise control
- Optimized air inlets
- High switching capacity
Overview technical data
| Device name | Thermostat switch (NO) |
| Device type | Thermostats |
| Series | STS 011 |
| Contact type | Snap-action contact |
| Sensor | Thermostatic bimetal |
| Protection type | IP20 |
| Casing | Plastic to UL94 V-0, light grey |
| AC/DC | AC DC |
| Operating voltage tolerance maximum | AC 250 V (VDE), AC 120 V (UL) V |
| Inrush current maximum | 16 A |
| Inrush current duration | 10 s |
| Switching capacity | AC 250 V: 10 (2) A AC 120 V: 15 (2) A DC 24-72V: 30 W |
| Switching current ohmic | 10 A |
| Switching current 2 ohmic | 15 A |
| Reference voltage ohmic maximum | 250 VAC |
| Reference voltage 2 ohmic maximum | 120 VAC |
| Switching current inductive | 2 A |
| Reference voltage inductive maximum | 250 VAC |
| Reference voltage 2 maximum | 120 VAC |
| Switching current dc ohmic | 1 A |
| Reference voltage dc ohmic maximum | 30 VDC |
| Minimal switching capacity | 0.48 W |
| Reference voltage minimum | 24 V |
| Switching current | 20 mA |
| Service life | >100000 cycles |
| Switching differential | 4 K |
| Switching differential tolerance | ± 3 K |
| Operating temperature | -45 °C - 80 °C |
| Operating humidity | ≤90 % RH |
| Storage humidity | ≤90 % RH |
| Storage temperature | -45 °C - 80 °C |
| Torque | 0.5 Nmmax. |
| Connection | 2-pole clamp, torque 0.5 Nm max.: Rigid wire cable 2.5 mm² (AWG 14) Stranded wire 1.5 mm² (AWG 16) |
| Design | Normally open (NO) |
| Mounting | Clip for 35 mm DIN rail, EN 60715 |
| Height | 70 mm |
| Width | 33 mm |
| Depth | 42 mm |
| Weight | 50 g |
| Note | The controller's contact system is exposed to the effects of the environment, which can change the contact resistance. This can lead to a voltage drop and/or self-heating of the contacts. Switching resistive loads (switching inductive loads). Wire end ferrules must be used for connections with stranded wires. |
Heating
Cooling
Regulating
Lighting
