6969 SMALL COMPACT THERMOSTAT STO 011 / STS 011 >>Thumbwheel setting dial >>Small hysteresis >>High switching capacity >>Anti frost assurance >>Optimized housing for better air flow www.stego.de | www.stego.co.uk | www.stegonorden.se REGULATING STEGO - PRODUCT CATALOGUE TECHNICAL DATASHEET 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. 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. TECHNICAL DATA 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. Connection diagrams Thermostat STO 011 (NC) Thermostat STS 011 (NO) Switch temperature difference 4 K (3 K tolerance) Sensor element thermostatic bimetal Contact type snap-action contact Service life > 100,000 cycles Max. switching capacity AC 250 V, 10 (2) A / AC 120 V, 15 (2) A DC 30 W at DC 24 V to DC 72 V Max. inrush current AC 16 A for 10 sec. Connection 2-pole terminal, clamping torque 1 Nm max.: rigid/stranded1 wire 2.5 mm (AWG 14) Mounting clip for 35 mm DIN rail, EN 60715 Casing plastic according to UL94V-0, light grey Dimensions 70 x 33 x 42 mm Weight approx. 50 g 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 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. Thermostat STO 011 (NC) Heater L N Heater Thermostat STS 011 (NO) e.g. Fan L N Thermostat STS 011 (NO) L N Examples of connection Filter fan, Cooling equipment, Signal device 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 Signal device min: 24 V; 20 mA 19.03.2019 | Specifications are subject to change without notice. Errors and omissions excepted. Suitability of this product for its intended use and any associated risks must be determined by the end customer/buyer in its final application. STO 011: Thermostat (NC); contact breaker for regulating heaters. The contact opens when temperature is rising.