18
Explosion-protected safety switches
for variable frequency drives, 20 A – 180 A
1.6
Safety switch GHG 266 (180A)
EC type examination certificate:
Marking acc. to 2014/34/EU and standard:
EN 60079-0
IECEx certificate:
Category of application: IEC60079-0
Rated voltage:
Rated current:
Perm. short circuit back-up fuse:
Switching capacity AC 3:
Cable entries (standard version):
Suitable cables and test torques of the
pressure screw
Seal 1+2+3
1 2
3
Seal 1+2
1 2
3
Seal 1
1 2
3
Test torque for screw in thread cable entry (Nm)
(1)
The tests of clamping ranges and torque values were performed with metal mandrel. The clamping range can
vary by using cables with different manufacturing tolerances and material properties. Please use the
combination of sealing 1 + 2 + 3 for the intermediate region.
(2)
When selecting the seal rubber, ensure that the cap nut can be tightened when carrying out any future mainte-
nance work on the cable entry.
Terminals:
Min. wire cross section / supply terminal:
Terminals:
Weight (standard version):
1.7
Interlocking switch:
Rated voltage:
Rated current:
Perm. short circuit back-up fuse:
Switching capacity:
Versions with gold-tipped contacts:
Terminals:
Test torque terminals:
1.8
Interlocking switch:
Rated voltage:
Rated current:
Terminals:
Test torque terminals:
1.9
Intrinsically safe switch circuits:
Max. safe voltage U
:
m
PTB 99 ATEX 1164
II 2 G Ex d e IIC T6
II 2 D Ex tD A21 T80 °C
IECEx BKI 07 .0005
Ex d e IIC T6
Ex tD A21 T53 °C
690 V, 50/60 Hz
up to 180 A
up to U
400V
N
250 A/gG
180 A
Double cable end piece (2 x Ø 47mm -72mm)
+ 2 x M25
Ø
min.
8.0
(1)(2)
max.
10.0
min.
10.0
(1)(2)
max.
13.0
min.
13.5
(2)
max.
17 .5
3.0
1 x 50 - 150 mm²
1x120 mm² for 180 A rated current (T6)
6.0 Nm
approx. 22.5 kg
690 V, 50/60 Hz
20 A
25 A/gL at 690 V
AC 15
DC 13
max 400 mA
2 x 1.5 - 4.0 mm²
2.5 Nm
250 V, 50/60 Hz
AC 5 A
DC 0.03 A
1 x 1.0 - 4.0 mm²
2.5 Nm
690 V
eff
Safe galvanic isolation from all other circuits
and earth
GB
up to U
500V up to U
690V
N
N
250 A/gG
200 A/gG
150 A
125 A
Nm
1.5
2.0
2.3
2.6
1.3
2.3
observe current load.
230 V / 8.0 A
400V / 6.0 A
24 V / 6.0 A
230 V / 0.4 A