Choosing a LEIPOLE enclosure thermostat or hygrostat
Switch cabinet fans and heaters only when the temperature or humidity calls for it.
Which type of thermostat does an electrical enclosure need?
It depends on what it switches. A cooling thermostat with a normally open contact, such as the LEIPOLE JSK0011F, starts the fans as the cabinet warms; a heating thermostat with a normally closed contact, such as the JSK0011R or JSK0010R, starts the heater as it cools. A dual thermostat (JSK0012, JWT0011 or JWT6011) does both with two settings. The JSK0011 models are set from 0 to 60 °C and switch up to 10 A at 230 V AC.
How does an enclosure thermostat differ from a room or HVAC thermostat?
A room or HVAC thermostat, often programmable, controls the heating and air conditioning of a building. An enclosure thermostat is a compact DIN rail device inside a control panel: a bimetal element bends with thermal expansion and opens or closes a contact that switches the cabinet fans or heater directly. LEIPOLE enclosure thermostats are IP20 devices for 35 mm DIN rail.
When do I need a hygrostat as well as a thermostat?
A thermostat keeps the cabinet above or below a temperature; a hygrostat switches the heater on when relative humidity rises, which targets condensation directly, so humid and coastal sites often use both. The LEIPOLE JSK0013 hygrostat is set from 30 to 90 % RH and switches up to 3 A at 230 V AC; the JSK0014 combines temperature and humidity control in one DIN rail device.
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