KRB-5404
14
ACB
ACB
ACB
Support
Support
Support
Conductor
Conductor
Conductor
●
Vertical terminals, 3 Poles
Right side view
Back view
●
Vertical terminals, 4 Poles
Right side view
Back view
Fig. 9 Conductor (include screw) connection area (AR440SB)
*Insulation distance of conductor connection area and earth metal is more than 12.5mm.
Use a support to hold conductors securely at distance L as shown in Fig. 10 and Table 2. Such a support will help preventing the
conductors and main circuit terminals from being deformed or damaged due to a large electromagnetic force caused by any fault
current. Use a high-quality insulating material for a support and secure enough insulation distance.
Table 2 Distance L
Short-circuit current (kA)
30
50
65
80
100
120
Distance
L (mm)
AR2
300
250
150
150
---
---
AR3
350
300
250
250
150
---
AR4
350
300
250
250
150
100
Fig. 10 Support mounting
