5 – 8
5.1.3.3 Draw-out circuit breaker
Without arc chute cover
A Minimum vertical clearance
B Minimum clearance on either side
C Minimum horizontal rear-side clearance
1) Measured from top surface of arc chutes
2) Valid with unblocked arcing space on top only
3) Class C with phase barriers made of insulating material only (page 5-5)
u Minimum clearance to live parts
v Minimum clearance to grounded metal parts
c Minimum clearance to non-conductive parts
With arc chute cover
Arc chute covers for draw-out cradles are options for every frame size. The gases are directed to the side outlets of the cradle.
Openings to the outside provided on the sides of the cradle shall not be blocked. Ventilation openings on the upper rear ensure that
no gas can escape upwards.
FS Class
3)
Dimensions
(mm)
A
1)
B C
u v, c u
2)
v, c u
2)
v, c
Operating voltage
(V)
480 600 480 600 480 600 480 600 480 600 480 600
I S, H, L Consult Technical Support
II S 150 300 100 100 20 50 10 10 14 14 10 10
II L 250 600 100 100 50 100 10 10 14 30 10 10
III L 250 500 100 100 50 100 10 10 14 14 10 10
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