The mechanical thermostat is used for controlling heating and cooling equipment, filter fans or signal devices. The thermostat registers the surrounding air and can switch both inductive and resistive loads via snap-action contact. Functionality: The temperature setting on the scale equals to the upper switch point, which means that the NC contact opens. The temperature setting minus switch temperature difference (and tolerances) equals to the lower switch point, which means that the NC contact closes.

Switch temperature difference 5K (-3/+2K tolerance)¹
Sensor element thermostatic bimetal
Contact type change-over snap-action contact
Service life > 100,000 cycles
Min. switching capacity 10mA
Max. switching capacity, NC 250VAC / 120VAC, 10 (4) A
DC 30W
Max. switching capacity, NO 250VAC / 120VAC, 5 (2) A
DC 30W
Max. inrush current AC 16A for 10 sec.

¹ If the Normally Closed contact is used, the switch temperature difference could be reduced by connecting terminal “N” (RF heating resistor). It causes the thermal feedback which is subject to surrounding conditions and thus has to be determined for each individual application.

² 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.

FZK 01170.0-000
AC 240V NC: 10 (4)A, NO: 5 (2)A
DC 30W (T=+5-60 C)