INSULATION DISTANCES
The insulation distances between the MCCB and earthed metal parts and insulators shown in this section must be maintained to prevent arcing faults occurring
due to conductive ionised gas.
In cases where other specifications require different insulation distances to those shown here, the greater distance must be maintained. In cases where two
different models are installed one above the other, the insulation distance between the two models should be as for the lower model.
1. Insulation plate
2. Top plate (earthed metal)
3. Interpole barrier
4. Front-connected type
5. Front-connected type with extension bar
6. Rear-connected type, plug-in type
7. Side panel
8. A. Distance from lower breaker to exposed live part of upper breaker terminal (front-connected type)
or distance from lower breaker to end face of upper breaker (rear-connected type or plug-in type)
B1. Distance from end face of breaker to top plate
B2. Distance from end face of breaker to insulation plate
C. Gap between breakers
D. Distance from side of breaker to side panel (earthed metal)
E. Dimensions of insulation over exposed conductors
ATTENTION
Exposed conductors must be insulated up to the breaker terminals. Interpole barriers or optional terminal covers are recommended.
If optional terminal covers are used, insulate the exposed conductor until it overlaps the terminal cover.
Insulation distances
MSX
86
MCCB WITH THERMAL-MAGNETIC, ELECTRONIC, RESIDUAL CURRENT PROTECTION
AND SWITCH-DISCONNECTORS
MSX - MSXD - MSXE - MSXM
Technical Information
Version 2.0
For technical information contact the Technical Assistance Service or visit gewiss.com
