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Parametri
problema comune
NT 81-F
Switch temperature difference
5K (-3/+2K tolerance)¹
Sensor element
NTC
Contact type
change-over snap-action contact
Service life
>100,000 cycles
Min. switching capacity
10mA
Max. switching capacity
NC: 250VAC, 10 (4) A
NO: 250VAC, 5 (2) A
Max. inrush current
AC 16A for 10 sec.
Connection
4-pole terminal, clamping torque 0.5Nm max.:
rigid/stranded² wire 2.5mm² (AWG 14)
Mounting
clip for 35mm DIN rail, EN 60715
Casing
plastic according to UL94 V-0, light grey
Dimensions
67 x 50 x 38mm
Weight
approx. 60g
Fitting position
variable
Operating/Storage temperature
-20 to +60°C (-4 to +140°F)
Operating/Storage humidity
max. 95% RH (non-condensing)
Protection type
IP20
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 wires, wire end ferrules must be used.
The electronic 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.
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