Mounting Attitude Of The Pw 1X0(B) Braking Resistor - HEIDENHAIN TNC 410 M Technical Manual

4.7.3 Mounting Attitude of the PW 1x0(B) Braking Resistor

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Danger
Because a very large amount of heat might be generated, the PW 1x0(B)
braking resistor should be mounted outside the electrical cabinet in a
vertical position (with the fan at the bottom.) Mount the PW 1x0(B) braking
resistor in a way that prevents the ingress of splashing water (coolant) and
makes unintentional personal contact impossible.
HEIDENHAIN Technical Manual for Inverter Systems and Motors
Leave space for
air circulation!
Temperatures of > 150
°C are possible; do not
mount any
temperature-sensitive
parts!