- Thumbwheel setting dial
- Small hysteresis
- High switching capacity
- Anti frost assurance
- Optimized housing for better air flow
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.
| Switch temperature 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 2.5mm² (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 |
| 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 |
¹ When connecting with stranded wires, wire end ferrules must be used.
Important note: The contact system of the regulator is subjected to environmental influences, thus the contact resistance may change. This can lead to a voltage drop and/or self-heating of the contacts.
Anti frost assurance
The anti frost assurance is a symbol on the setting scale of the NC thermostat
(STO 011) at +11°C. This setting assures closing of the switching contact before 0°C.
| Setting range | Art. No. Contact breaker (NC) | Art. No. Contact maker (NO) | |
|---|---|---|---|
| 0 to +60°C | 01115.0-00 | 01116.0-00 | |
| +32 to +140°F | 01115.9-00 | 01116.9-00 |
Technical Drawing
- www.stego.ru>
- Products>
- Regulating>
- Regulators>
- STO 011 / STS 011 | NC (Heating) or NO (Cooling) - Small Hysteresis
