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Mechanical thermostat

FZK 011

The set value corresponds to the upper switching point, here the contact breaker opens. The set value minus the switching temperature differential of 5 K (and tolerances) corresponds to the lower switching point, here the contact breaker closes. The mechanical thermostat is used to control heating, cooling devices, filter fans or signal transmitters.

  • Adjustable temperature
  • Small hysteresis enables precise control
  • High switching capacity
  • Change-over contact (heating or cooling)
  • Clip fixing
CEUKCAEACUL

Overview technical data

Device typeThermostats
Contact typeSnap-action contact
SensorThermostatic bimetal
Protection typeIP20
CasingPlastic to UL94 V-0, light grey
AC/DCAC
Inrush current16 A
Inrush current duration10 s
Switching capacityNormally closed: AC 10 (4) A, DC 30 W; Normally open: AC 5 (2) A, DC 30 W
Switching current ohmic10 A(NC)
Switching current 2 ohmic5 A(NO)
Reference voltage ohmic250 VAC
Reference voltage 2 ohmic120 VAC
Switching current inductive4 A(NC)
Switching current 2 inductive2 A(NO)
reference_voltage_inductive250 VAC
Reference voltage 2120 VAC
Switching current dc ohmic1 A
Reference voltage dc ohmic30 VDC
Minimal switching capacity0,48 W
Reference voltage24 V
Switching current10 mA
Service life>100000 cycles
Switching differential5 K
Switching differential tolerance-3/+2 K
Operating temperature-45 °C - 65 °C
Operating humidity≤90 % RH
Storage humidity≤90 % RH
Storage temperature-45 °C - 65 °C
Torque0,5 Nmmax.
Connection4-pole clamp, torque 0.5 Nm max: Rigid wire/stranded wire² 2.5 mm² (AWG 14)
DesignChange-over contact
MountingClip for 35 mm DIN rail, EN 60715
Height67 mm
Width50 mm
Depth38 mm
Weight100 g
NoteThe controller's contact system is exposed to environmental influences, which can change the contact resistance. This can lead to a voltage drop and/or self-heating of the contacts. During usage of the NC (normally closed) contact, there is the possibility of thermal return to reduce the switching temperature differential by connecting the clamp "N" (RF heating resistor). It depends on the ambient conditions and must be determined in tests for the respective application. Wire end ferrules must be used for connections with stranded wires.

Product variants

Article numberFollow-up articleSetting rangeOperating voltageOperating voltage toleranceInteractions
01170.0-0001179.0-005 °C - 60 °C230 V250 V
01170.0-02-20 °C - 35 °C230 V250 V
01170.9-0040 °F - 140 °F120 V120 V
01170.0-0140 °F - 140 °F230 V250 V
01170.9-015 °C - 60 °C120 V120 V

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