The anti-condensation heaters, consisting of a self-regulating PTC resistor and a black anodised aluminium casing, guarantee constant operational safety by preventing the formation of condensation inside electrical cabinets. Two versions are available: with connection cable (up to 30W) and with connection terminal block (45-150W). They are designed for 35 mm EN 50022 rail mounting. Normal frequency 50-60 Hz. Degree of protection IP20 according to EN 60529.