17
5
Application / Properties
The explosion-protected main-, load- and
safety switch are designed for the safe isola-
tion of the electrical energy at all poles while
maintenance, cleaning and repair work is
being carried out on equipment, machinery
and drives in potentially explosive atmosphe-
res.
See technical data, for the temperature class,
explosion group and permissible ambient tem-
perature.
Due to the AC 23 motor switching capacity of
the the explosion-protected main-, load- and
safety switch, reliable isolation (switching) is
also possible during operation.
Due to the mechanical design of the he explo-
sion-protected main-, load- and safety switch,
compulsory opening of the contacts is possi-
ble.
The explosion-protected main-, load- and
safety switchs fulfil the isolating properties ac-
cording to EN/IEC 60 947-3,
Die "NOT-AUS" - Ausführung entspricht den
Anforderungen der EN/IEC 60 204-1.
To prevent unauthorized switching, the explo-
sion-protected main-, load- and safety switch
can be locked in the „OFF“ position by means
of 3 padlocks, (shackle diameter of the pad-
locks up to 4-6 mm, preferred diameter 6mm).
A built-in locking device prevents the opening
of the enclosure in the „OFF“ position.
The data according to sections 3 and 4 shall
be taken into account during use
Applications other than those described are
not permissible without a written declaration
of consent from Messrs. COOPER CROUSE-
HINDS GmbH.
3
Conformity with standards
The explosion-protected main-, load- and
safety switch are conform to the standards
specified in the EC-Declaration of conformity,
enclosed separately.
It has been designed, manufactured and te-
sted according to the state of the art and to
DIN EN ISO 9001 and IEC 80079-34:2011.
94/9 EWG: Geräte und Schutzsysteme zur
estimmungsgemäßen Verwendung in
explosionsgefährdeten Bereichen.
The control units fulfil further requirements,
such as the EC directive on electromagnetic
compatibility (2004/108/EC).
1.1.9 Main-, load-, and
safety switches800 A
Rated voltage:
690 V / 50 Hz
Rated current 40 °C
I
the:
800 A
up to U
N
415 V
up to U
N
500 V
up to U
N
690 V
Perm. short circuit back-up fuse:
1000 A gL
1000 A gL
1000 A gL
Switching capacity AC23 A:
800 A
800 A
650 A
Terminals:
PE Terminals:
2 x 240 mm² M12 x 40
50 mm² - 185 mm²
Gewindebohrungen für Leitungseinführungen:
Bei Metallgehäusen ist eine entsprechende Bohrung vorhanden.
Es werden zusatzlich geeignete Kontermuttern benötigt.
3 pole metal enclosure
4 x M80 / 1 x M25
4 pole metal enclosure
4 x M80 / 1 x M25
Test torques::
Cover screws:
Terminals:
Cap nut:
min. cable Ø
max. cable Ø
M25
5.0 Nm
3.5 Nm
M80
22.0 Nm
5.0 Nm
Weight:
metal enclosure
3 pole
approx. 50 Kg
4 pole
approx. 55 Kg
Explosion-protected
main-, load- and safety switch 25 A up to 800 A
Zone 22
4
Field of application
The explosion-protected main-, load- and
safety switch are intended for use in potenti-
ally explosive atmospheres in Zone 22 in
accordance with EN/IEC 60079-10-2.
The enclosure materials used, including any
external metal parts, are high quality materials
which ensure a corrosion protection and resi-
stance to chemical substances corresponding
to the requirements in a “normal industrial at-
mosphere”:
- sheet steel with plastic powder coating
- glass-fibre reinforced polyester
- impact resistant polyamide
In case of use in an extremely aggressive at-
mosphere, you can obtain information concer-
ning the chemical resistance of the materials
used from your Cooper Crouse-Hinds branch.
Fig 1
Padlocking device
