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TECHNICAL DATASHEET
2
REGULATING
SMALL COMPACT THERMOSTAT
KT011-Series
Thermostat
(NC)
Connection diagrams
Thermostat
(NO)
> Safe wiring with Push-In connection
terminal
> Faster and tool-free wiring
> Easy adjustability of switch
temperature setting
> for use in up to 5,000 m altitude
> Improved air intakes for ventilation
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).
Norm ally closed: Thermostat (NC); contact breaker for regulating heaters. The contact opens when
tempe
rature is rising.
Normally open: Thermostat (NO); contact maker for regulating of filter fans and heat exchangers or for
swit
ching signal devises when temperature limit has been exceeded. The contact closes when temperature is
rising.
TECHNICAL DATA
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.
1
Connection
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
2 Push-In clamps
rigid wire 2.5 mm² (AWG 14)
stranded wire 1.5 mm² (AWG 16)
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.
Examples of
Heater
Filter fan, Cooling equipment, Signal device
Setting range Art. No.
+32 to +140 °F
0 to +60 °C
2
The level of switching current has an influence on the tolerance accuracy;
Contact breaker (NC)
KT011409-U KT011419-U 10 (2) A 15 (2) A 30 W VDE UL File No. E164102 EAC
KT011469-U KT011479-U 10 (2) A 15 (2) A 30 W VDE UL File No. E164102 EAC
connection
Art. No.
Contact maker (NO)
KTO 111 (NC)
HeaterThermostat
KTS 111 (NO)
Switching current2/capacity max Approvals
AC 250 V AC 120 V DC 24-72 V
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e.g. FanThermostat
e.g. Signal deviceThermostat
KTS 111 (NO)
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SMALL THERMOSTAT
KT011 Series
U Compact Design
U Wide Adjustment Range
U Available with °C or °F Scale
U Color Coded
Temperature Dials
U DIN Rail Mountable
Thermostat “NC”
(Normally Closed):
Thermostat opens at temperature.
Comes with a RED temperature dial.
Thermostat “NO”
(Normally Open):
Thermostat closes at temperature
rise. Comes with a BLUE
temperature dial.
KT011469
shown actual size.
Dimensions:
mm (inch)
33 (1.3)
KT011479
shown actual size.
43 (1.7)
Specifications
Sensor Element: Thermostatic bi-metal
Maximum Tolerance: ±7°F (4K)
Switching Difference (Hysteresis):
12.6°F ±5.4°F (7°C ±3K)
Service Life: 100,000 cycles
Switching Capacity (Max Load):
15 A resistive/2 A inductive @ 120 Vac
10 A resistive/2 A inductive @ 250 Vac
DC 30W
Minimum Load: 20 mA (all voltages)
Connections: 2-pole terminal for AWG
14 max [2.5 mm² (0.10 in²)]
Mounting: Clip for 35 mm (1.4") DIN rail
(EN 50022)
Dimensions: 60 H x 33 W x 43 mm D
(2.4 x 1.3 x 1.7")
Housing: Plastic, UL94V-0
Weight: 40 g (1.4 oz)
Protection Type: NEMA 2 (IP20)
Operating Temperature: -45 to 70°C
(-49 to 158°F)
Storage Temperature: -45 to 70°C
(-49 to 158°F)
Note:
Specifications are subject to change
without notice. Suitability of this product for its
intended use and any associated risks must
be determined by the end customer/buyer in
its final application.
°C
(NC)
(NO)
Wiring examples
(NO)
To Order Visit omega.com/kt011_series for Pricing and Details
Model No. Description
KT011409 Thermostat, NC—open on rise, 32 to 140°F
KT011419 Thermostat, NO—close on rise, 32 to 140°F
KT011469 Thermostat, NC—open on rise, 0 to 60°C
KT011479 Thermostat, NO—close on rise, 0 to 60°C
Comes complete with operator’s manual.
Ordering Examples: KT011409, thermostat, NC—open on rise, 32 to 140°F.
KT011479, thermostat, NO—close on rise, 0 to 60°C.
60 (2.4)
HT-50
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