Eaton Crouse-hinds series, Manual

9

5.1  GHG 261 .. Main-switch / load disconnect switch

The Main-switch / load disconnect switch (IEC/EN 60947) are designed 
for the safe isolation of the electrical energy at all poles on equipment, 
machinery and drives in potentially explosive atmospheres. 

5.2   GHG 261 .. Safety switch; maintenance-/repair -switch

The safety switches (IEC/EN 62626-1) are designed for the safe isolation 
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 atmospheres.

The classification according to IEC/EN 62626-1 is given.

The ”EMERGENCY-STOP“ version conforms to the requirements of  
IEC/EN 60204-1.

A built-in locking device prevents the opening of the enclosure in the 
”OFF“ position.

6 Installation

The relevant national regulations(e.g. Elex V, the equipment safety law for 
Germany) and the generally recognized rules of engineering apply for the 
installation and operation (IEC/EN 60079-14).

The improper installation and operation of switches GHG 261 may 

result in the invalidation of the guarantee.

6.1 Mounting

Before mounting the switches GHG 261, the cover has to be removed 
from the enclosure base. For this, the safety switch has to be set to the 
”ON“ position.

When the safety switches are mounted directly onto the wall,  they shall 
rest evenly only on the fastening points provided for this purpose.

The screw chosen shall fit the fixing hole (see dimensional drawings, 
page 6) and shall not damage the hole (e.g. use of a washer).

The apparatus shall be fixed diagonally with a minimum of 2 screws.

If the screws are overtightened, the apparatus may be damaged.

The safety switches GHG 261 are suited for mounting on CEAG 
apparatus holders size 1 by means of self-cutting screws (see fig. 2). 

See the respective mounting instructions.

6.2  Opening apparatus / Electrical connection

The electrical connection of the apparatus may only be carried out 

by specialists (IEC/EN 60079-14). 
Before opening the apparatus, ensure that it has been  isolated from 
the voltage supply or to take suitable protective measures.

Before opening the safety switches, set the switch to the ”ON“ position.

The properly bared conductors of cables shall be connected with due 
regard to the respective regulations.

To maintain the explosion protection, conductors shall be connected with 
special care.

The insulation shall reach up to the terminal. The conductor itself shall not 
be damaged.

The minimum and maximum conductor cross sections that can be 
connected shall be observed (see technical data).

All screws and / or nuts of connection terminals, including those not in 
use, shall be tightened down securely.

Excessive tightening may affect or damage the connection (see 

technical data).

The standard terminals are designed for the direct connection of 
conductors with copper wires. 

If multi- or fine-wire connection cables are used, the wire ends shall be 
handled according to the applicable national and international regulations 
(e.g. use of multicore cable ends).

The position of the connection terminals is shown in the wiring diagrams 
on the switch base and in fig. 3 of the operating instructions. 

To ensure that the safety switches closes correctly, switching at the 
switch shaft of the switch insert is not permitted when the apparatus is 
open.

If, to facilitate the feeding of conductors into the enclosure, the switch 
insert is removed from the enclosure base, it shall be put back correctly  
before the electrical connection is made. 

C

C

Apparatus holder size 1 

for wall and trellis fixing

Apparatus holder size 1  for pipe fixing

C = screw fixing points for safety switch

GHG 261, 10 A

 Fig. 2

Wiring diagram

 Fig. 3

GB

Explosion-protected safety switch, main switch,  
load disconnect switch 10 A, GHG 261