KTO111/KTS 111 Small Thermostat for Switchgear

KTO111/KTS 111 Small Thermostat for Switchgear

The mechanical small thermostat KTO 111 and KTS 111 are two state regulators for use up to 5,000 meters in altitude, thanks to optimized 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).

Thermostat (NC): Thermostat opens on temperature rise – for regulating heaters or for switching signal devices. Comes with red temperature dial.

Thermostat (NO): The thermostat closes on temperature rise – for regulating filter fans and heat exchangers or for switching signal devices. Comes with blue temperature dial.

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Features

  • Safe wiring with Push-In terminals
  • 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

Specification

Switching difference 12.6 °F ±7 °F tolerance (7 K ±4 K)
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 14)
Housing plastic, UL 94V-0, light grey
Mounting clip for 35 mm DIN rail, EN 60715
Dimensions 2.4 x 1.3 x 1.6″ (60 x 33 x 41 mm)
Weight approx. 1.4 oz. (40 g)
Mounting position variable
Operating/Storage temperature -49 to +176 °F (-45 to +80 °C)
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: 0.4 to 0.5″ (10-12 mm). When connecting with wires, wire end ferrules must be used (square or trapezoid crimp). Length of wire end ferrule: 0.4″ or 0.5″ (10 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.

Setting range Part No.
(NC)		 Part No.
(NO)		 Switching
current²/
AC 250 V		 capacity
AC 120 V		 max.
DC 24-72 V		 Approvals
+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
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

2 The level of switching current has an influence on the tolerance accuracy;

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