Small Compact Thermostat
KTO 011 / KTS 011

  • Large setting range
  • Small size
  • Simple to mount
  • High switching performance

The mechanical thermostats KTO 011 and KTS 011 are two state regulators used to control heaters, coolers, filter fans or signal devices.

KTO 011: Thermostat (normally closed); contact breaker for regulating heaters. The contact opens when temperature is rising.

KTS  011: Thermostat (normally open); 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 difference7K (±4K tolerance)
Sensor elementthermostatic bimetal
Contact typesnap-action contact
Service life> 100,000 cycles
Max. operating voltageAC 250 V (VDE)
AC 120 V (UL)
Max. inrush currentAC 16 A for 10 sec.
Connection2-pole terminal, clamping torque 0.5Nm max.:
rigid wire 2.5mm² (AWG 14)
stranded wire1 1.5mm² (AWG 16)
Mountingclip for 35mm DIN rail, EN 60715
Casingplastic according to UL94 V-0, light grey
Dimensions60 x 33 x 43 mm
Weightapprox. 40 g
Fitting positionvariable
Operating/Storage temperature-45 to +80 °C (-49 to +176 °F)
Operating/Storage humiditymax. 90 % RH (non-condensing)
Protection typeIP20

¹ 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.

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Art. No.
Contact breaker (NC)
Art. No.
Contact maker (NO)
Switching current/capacity
AC 250 VAC 120 VDC 24-72 V
0 to +60 °C01140.0-0001141.0-0010 (2) A15 (2) A30 WVDE--EAC
-10 to +50 °C01142.0-0001143.0-0010 (2) A15 (2) A30 WVDEUL File No. E164102-EAC
+20 to +80 °C01159.0-0001158.0-003 (2) A3 (2) A30 WVDEUL File No. E164102CSAEAC
+32 to +140 °F01140.9-0001141.9-0010 (2) A15 (2) A30 WVDEUL File No. E164102CSAEAC
+14 to +122 °F01142.9-0001143.9-0010 (2) A15 (2) A30 WVDEUL File No. E164102CSAEAC
0 to +60 °C01146.9-0001147.9-0010 (2) A15 (2) A30 WVDEUL File No. E164102CSAEAC

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Technical Drawing

Small Compact Thermostat KTO 011 / KTS 011 Series

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