12
TECHNICALDATA
SwitchSelection– CommonRatingDataandUtilizationCategories
SwitchRatingorUtilizationCategory
Description
Rated insulation voltage, U
i
Maximum value of operational voltage
Thermal current, I
th
Maximum value of current that the switch can carry (not switch) whenmounted in free air
Max. ambient air temperature for stated value:- KG/KH switches : +50
o
c average over 24 hours with peaks up to 55
o
c
AC-3
For the selection of switches used for starting of squirrel cagemotors and switching off during running
AC-15
For selection of switches to be used for the control of an a.c. electromagnetic load, e.g. contactor coils
AC-21A
For selection of switches required for switching of resistive loads, includingmoderate overloads
AC-23A
For selection of switches required for switchingmotor loads or other highly inductive loads
Normal selection criteria for emergency-off switches for motors and switches used for safety isolation of motors
(switch-disconnectors) such as Off/On,main or main/emergency-off switches.
Switch-disconnectors - selectiondata inaccordancewith: IEC60947, IEC60204, BSEN60947, BSEN60204
KG10
20
690
-
-
-
20
1.1 2.2 3.7 1.5 3 5.5
20
2.5
1.5
-
KG20
25
690
-
-
-
25
1.5 4 5.5 2.2 5.5 7.5
35
6
4
-
KG32
32
690
-
-
-
32
2.2 5.5 7.5 3 5.5 11
35
6
4
-
KG41
40
690
-
-
-
40
3 7.5 11 4 7.5 15
50
16
10
-
KG64
63
690
-
-
-
63
4 11 18.5 5.5 11 22
63
16
10
-
KG80
80
690
-
-
-
80
7.5 15 22 10 18.5 30
80
50
35
-
KG100
100
690
-
-
-
100
8.5 18.5 30 11 22 37
100
50
35
-
KG105
125
690
-
-
-
125
-
22 37 -
25 45
125
50
35
-
KG125
125
1000
1)
-
-
-
125
-
22 37 -
30 45
125
95
70
-
KG160
160
1000
1)
-
-
-
160
-
30 45 -
30 55
160
95
70
-
KG210
200
1000
1)
-
-
-
200
-
37 55 -
37 75
200
185
120
-
KG250
250
1000
1)
-
-
-
250
-
37 55 -
37 90
250
185
120
-
KG315
315
1000
1)
-
-
-
315
-
45 75 -
55 110
315
185
120
-
KH16
16
800
1)
-
-
-
16
1.5 3 5.5 2 4.5 7.5
25
6
4
-
KH20
20
800
1)
-
-
-
20
2 3.5 6.5 2.5 5.5 10
32
6
4
-
KH25
25
800
1)
-
-
-
25
2.5 4 7.5 3.3 7 12
35
6
4
-
KH32
32
800
1)
-
-
-
32
3 5.5 11 4.2 9 16
35
10
6
-
KH40
40
800
1)
-
-
-
40
4.5 7.5 15 5.5 11 20
50
10
6
-
KH63
63
1000
1)
-
-
-
63
7.5 11 22 8.5 18.5 30
80
35
25
-
KH80
80
1000
1)
-
-
-
80
10 15 30 11 23 40
100
35
25
-
KH85
100
1000
1)
-
-
-
100
10 -
-
11 -
-
100
35
25
-
Auxiliarycontacts - selectiondata inaccordancewith: IEC60947, BSEN60947.
KG10
20
690
6 6 4
20
-
-
-
-
-
-
20
2.5
2.5
-
KG20 & KG32
10
500
2.5 2.5 1.5 10
2)
-
-
-
-
-
-
10
1.5
1.5
-
KG41 - KG105
16
690
6 6 3
16
-
-
-
-
-
-
16
2.5
2.5
-
KG125 - KG315
16
690
6 6 3
16
-
-
-
-
-
-
16
2.5
2.5
-
SwitchType
Thermal Insulation
RatedOperatingCurrent&Power
ShortCircuit
Terminal Capacity
Rating Voltage,Ui Operational Current, Ie
Operational Power
Protection
Single core/
strandedwire.
Flexiblewire,
withsleeve.
Terminal bolt for
Cubar/lug.
110v
220-240v
380-415v
690v
220-240v, 1ph.
220-240v
3, ph.
380-415v
220-240v, 1ph.
220-240v
3ph.
380-415v
AC-15
AC-21A
AC-3
AC-23A
kW
A
mm
2
mm
2
mm
Max. fuse
gL/gGchar.
Openrating
Ith
Notes:
1)Onlyvalid forno-loadswitching (AC-20A) above690v.
2)Max500v
Direct Sales Line:
01635 262626
12
Issue 5
Switch-disconnectors
A
V
A
Off - On
SideMountingAuxiliary Contacts
Changeover with CentreOff
Main Contacts
Auxiliary Contacts
Main Contacts
Auxiliary Contacts
2 pole
KG10
3 pole
3 pole + N link
4 pole
6 pole
1N.O. + 1N.C.
2N.O.
2N.O. + 2N.C.
KG125 - KG315
3 pole
2 pole
4 pole
2 contacts
(1 closed in eachOn position)
Fitted on
LH side
H010/A11-.
Fitted on
RH side
Fitted on
LH side
Fitted on
RH side
For ‘E’ mounting
(Front mounting switches)
For ‘VE’ mounting
(Basemounting switches)
H010/A21-.
i - Disco nectors
