S e n t r y Technical
660
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circu it p ro tectio n
w w w .m k electric.co .u k
S w itc h D is c o n n e c to rs
S t a n d a rd s a n d a p p ro v a ls
Sentry switch disconnectors are designed to fully comply with
the req uirements of B S E N 6 0 9 4 7 -3 .
T hey all feature positiv e contact status indication in accordance
with the 1 7 th E dition IE E W iring R egulations (5 3 7 .2 .2 .1 and
5 3 7 .3 .2 .2 ).
T e c h n ic a l s p e c ific a t io n
E lectrica l
C ategory of duty:
AC22A
L oad type capab ility:
B oth resistiv e and inductiv e
O perating v oltage:
2 4 0 V a.c.
O perating freq uency:
50H z
D e s c rip t io n
5560s
5500s
R ated operational
current le
63A
100A
R ated duty
U ninterrupted
U ninterrupted
R ated mak ing
capacity l
1 8 9 A rms
3 0 0 rms
R ated b reak ing
capacity lc
The term inals are o f a tu nnel d es ig n and o ffer a g enero u s cab le cap acity o f 5 0 m m
co nd u cto rs and 3 5 m m 2 fo r flex ib le co nd u cto rs , o n b o th cu rrent rating s .
1 8 9 A rms
3 0 0 rms
C a t e g o ry o f d u t y
R ated short time
withstand current
lcw
2 k A rms
for 1 sec
2 k A rms
for 1 sec
The S entry s w itch d is co nnecto r is cap ab le o f s w itching b o th res is tiv e and ind u ctiv e lo ad s and has a
categ o ry o f d u ty o f A C 22A .
R ated short circuit
mak ing capacity lcm
3 k A peak
3 k A peak
R ated conditional
short circuit current
6 k A rms
prospectiv e
6 k A rms
prospectiv e
P hy sica l
A mb ient operating temperature:
– 5 °C to + 4 0 °C
IP rating:
F ront face IP 3 X , screw IP 2 X
The S entry rang e o ffers a cho ice o f s w itch d is co nnecto r rated at either 1 0 0 A o r 6 3 A .
The o p erating d o lly is cap ab le o f b eing lo ck ed in either the O N o r O F F p o s itio n. W hen lo ck ed in the O N
p o s itio n it w ill no lo ng er o p erate as an is o lato r. P o s itiv e ind icatio n o f the o p ening o f the co ntacts is o nly
g iv en w hen the g reen s trip e can b e s een o n the d o lly .
M eet B S E N and IE E W iring R eg u latio n
req u irem ents
L
C ho ice o f cu rrent rating s
L
Tu nnel d es ig n term inals fo r eas e o f w iring
36
R a ting
5500s
100A
5560s
63A
L
G enero u s cab le cap acity
L
L o ck ab le o p erating d o lly
L
M ak e firs t, b reak las t o n neu tral
In s t a lla t io n
48
The S entry s w itch d is co nnecto r is d es ig ned to
accep t b o th cab le-in/cab le-o u t and d irect-to b u s b ar co nnectio ns .
16
R a t in g s p e c ific a t io n
Switch disconnector
fo r s o lid s trand ed
F e a t u re s
L
D im e n s io n s (m m )
M ax installation altitude:
2 0 0 0 metres
2
The term inal s crew s are to u ch-p ro o f to IP 2X ,
cap tiv e and featu re co m b inatio n head s .
M A IN
SW ITC H
72
LN 5500s
100A AC22A
240V 50H Z
EN 60947-3
N1
N2
45
L1
L2
ON
OFF
44