GE Industrial Solutions GERAPID 8007R, 10007R WITH ARC CHUTES 1X2, 1X3 - Manual (Page 26)

5. Dimensions & safety distances
Warnings
During operation, all metallic parts of the breaker, except housing and
closing solenoid, may carry dangerous voltages.
For installation of the breaker into cubicle, top and side openings shall
be provided, in order to reduce internal pressure rise during short
circuit clearing.
Cubicle top cover shall have not less than 50% ventilation openings.
26 Design and specifications are subject to change without notice DTR01807 rev.02 2010-02-16