- Safe wiring with Push-In connection
- 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
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).
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.
|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 wire1 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|
|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.
Contact breaker (NC)
Contact maker (NO)
AC 250 V
AC 120 V
DC 24-72 V
|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|
|+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|
2 The level of switching current has an influence on the tolerance accuracy;
- KTO 111 / KTS 111 | Push-In Terminals NC (Heating) or NO (Cooling)