STO 011 / STS 011
Applies to: 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.
download> 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.
Small Compact Thermostat STO 011 / STS 011
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 |
| 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.
