Thermostat switch (NC)
STO 011
The mechanical NC thermostat opens when the temperature rises and is used to control heaters or to switch signal transmitters when the temperature undershoots. The bimetal thermostat has a small hysteresis and an anti frost assurance.
- Thumbwheel setting dial
- Small hysteresis enables precise control
- Anti frost assurance
- Optimized air inlets
- High switching capacity
Overview technical data
| Device name | Thermostat switch (NC) |
| Device type | Thermostats |
| Series | STO 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 closed (NC) |
| 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
