Dual Thermostat
ZR 011

  • NO and NC in one casing
  • Separate adjustable temperatures
  • High switching capacity
  • Terminals easily accessible
  • Clip fixing

Two thermostats in one casing:
Thermostat (contact breaker, normally closed) for regulating heaters. The contact opens when temperature is rising.

Thermostat (contact maker, normally open) for regulating filter fans and heat exchangers or switching signal devices when temperature limit has been exceeded. The contact closes when temperature is rising.

Heaters and cooling equipment can be switched independently from each other with a temperature offset as opposed to the usual change-over contacts.

Technical Data

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Switch temperature difference7K (±4K tolerance)
Sensor elementthermostatic bimetal
Contact typesnap-action contact
Service life> 100,000 cycles
Max. switching capacity250VAC, 10 (2) A / 120VAC, 15 (2) A
DC 30W at 24VDC to 72VDC
Max. inrush currentAC 16A for 10 sec.
Connection4-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
Dimensions67 x 50 x 46mm
Weightapprox. 90g
Fitting positionvariable
Operating/Storage temperature-45 to +80°C (-49 to +176°F)
Operating/Storage humiditymax. 90% RH (non-condensing)
Protection typeIP20
ApprovalsVDE, UL File No. E164102, CSA, EAC

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.              Setting range              Setting range
01172.0-00Contact breaker (NC)0 to +60°CContact maker (NO)0 to +60°C
01172.0-01Contact breaker (NC)+32 to +140°FContact maker (NO)+32 to +140°F
01175.0-00Contact breaker (NC)-10 to +50°CContact maker (NO)+20 to +80°C
01175.0-01Contact breaker (NC)+14 to +122°FContact maker (NO)+68 to +176°F
01176.0-00²Contact maker (NO)0 to +60°CContact maker (NO)0 to +60°C
01176.0-01²Contact maker (NO)+32 to +140°FContact maker (NO)+32 to +140°F

² For regulating heat exchangers and fans (e. g. LE 019) and as an alarm contact for monitoring the interior temperature of electronic enclosures.

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Technical Drawing

Dual Thermostat ZR 011

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