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2 TECHNICAL 2 REGULATING DATASHEET www.stego.de | www.stego.co.uk | www.stegonorden.se PRODUCT CATALOGUE - STEGO SMALL COMPACT THERMOSTAT KTO 111 / KTS 111 > Safe wiring with Push-In connection terminal > Faster and tool-free wiring > Improved air intakes for ventilation > Easy adjustability of switch temperature setting > for use in up to 5,000 m altitude KTO 111: Thermostat (NC); contact breaker for regulating heaters. The contact opens when temperature is rising. KTS 111: Thermostat (NO); contact maker for regulating of filter fans and heat exchangers or for switching signal devises when temperature limit has been exceeded. The contact closes when temperature is rising. TECHNICAL DATA Connection diagrams Thermostat KTO 111 (NC) Thermostat KTS 111 (NO) Switch temperature difference 7 K (±4 K tolerance) Sensor element thermostatic bimetal Contact type snap-action contact Service life 100,000 cycles verified Max. operating voltage, frequency range AC 250 V, 50-60 Hz Max. inrush current AC 16 A for 10 sec. Connection1 2 Push-In clamps rigid wire 2.5 mm² (AWG 14) stranded wire 1.5 mm² (AWG 16) Mounting clip for 35 mm DIN rail, EN 60715 Casing plastic according to UL94 V-0, light grey Dimensions 60 x 33 x 41 mm Weight approx. 40 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/Protection class IP20 / II Overvoltage category/Altitude II: up to 5,000 m; III: up to 2,000 m ¹ Stripped length of rigid wire: 10 to 12 mm. When connecting with wires, wire end ferrules must be used (square or trapezoid crimp). Length of wire end ferrule: 10 mm or 12 mm. 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 KTO 111 (NC) Heater Thermostat KTS 111 (NO) e.g. Fan Thermostat e.g. Signal device KTS 111 (NO) Examples of connection Heater Filter fan, Cooling equipment, Signal device Setting range 2 Art. No. Contact breaker (NC) Art. No. Contact maker (NO) Switching current2/capacity max 0 to +60 °C 11100.0-00 11101.0-00 10 (2) A 15 (2) A 30 W VDE UL File No. E164102 EAC -10 to +50 °C 11100.0-01 11101.0-01 10 (2) A 15 (2) A 30 W VDE UL File No. E164102 EAC AC 250 V AC 120 V Approvals DC 24-72 V +20 to +80 °C 11100.0-02 11101.0-02 3 (2) A 3 (2) A 30 W VDE UL File No. E164102 EAC +32 to +140 °F 11100.9-00 11101.9-00 10 (2) A 15 (2) A 30 W VDE UL File No. E164102 EAC +14 to +122 °F 11100.9-01 11101.9-01 10 (2) A 15 (2) A 30 W VDE UL File No. E164102 EAC The level of switching current has an influence on the tolerance accuracy; 15.12.2020 | 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. The mechanical thermostats KTO 111 and KTS 111 are two state regulators for use up to 5,000 meters in altitude, thanks to optimised air gap and increased creepage distance. By use of Push-In terminals the thermostat is wired tool-free. The Push-In terminals provide constant pressure on the wires to prevent them from coming loose (e.g. during transport).