2 External fro vie the circu it-b 1.
The fixed version circuit-breaker has its own terminals for connection the power circuit; the withdrawable version the circuit-breaker comprises
the moving part the apparatus, which completed with fixed part fitted with terminals for connecting the power circuit the installation.3.
Each pole insulated from the others and contains the circuit-breaking parts, the shunt and the override protection.4 oving stru ctio cte ristics
S lective circuit-breaker
1 rtin structure ade steel sheet
2 urrent sensor for protection release
3 Term inal supp ortin insulating box
4 orizontal rear term inals
5a Main fixed plates
5b Fixed arcing plates
6a Main oving plates
6b oving arcing ntact plates
7 rcing cham ber
Fig.3.1 eneral cte ristics
The SACE Emax series circuit-breakers consists steel sheet structure which houses the operating mechanism, the poles and the auxiliary
parts.
The moving part and fixed part are coupled means special clamps installed the fixed part. 3
8 Term inal box for the fixed version-S liding contacts the ithdraw able version
9 Protection release
10 Circuit-breaker closing and opening echanism
11 Closing springs
12 Spring loading geared otor (on request)
13 Leverfor anually loading the closing springs
14 acking-out device (only for ithdraw able circuit-breakers)
15 Service releases (shunt clo sing release, shun ning release, undervoltage
release) (on request)
Model 3447
A pparatus Emax DC
S cale
D oc-N 1SDH000635R0002
Page No.2 r-p ircu it-b rating plate
S E2B/E 800 V
U 1000 2
M rlp i
c 25
\ \
o IauC y
b E
c 5
u ŕ
c t.Description
1. Fig.
1. 2b
1.1 hre circu it-b rating plate
SACE E2B/E800
Ue (V)
(kA)
Iow(o,5s) (kA)
IU-800A Ue-750V
750
j, MSB® "
' 'I'I'l €
1 PR122/DC PR123/DC
electronic icroprocessor-
based release
2 Trade ark
3 perating and control parts of
the ope tin echanism and
release tripped signals
4 Rating plate
Fig.B -"xh ^
i— —j
+ -
V V
Fig.
5/108
. 2a
1
