l 7 load-break switches - nhp electrical · 2012-01-13 · modular load-break switches - 16 to 315...
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10 - 138 GST not included
10
Modular load-break switches - 16 to 315 ampsThe L 7 range of load-break switches are available in 6 frame sizes (11 current ratings) and are suitable for use as motor isolators (AC 23) in the range of 7.5 to 110 kW. All switches utilise the samehandle style, all of which can provide door interlocking facilities. Clip-on accessories enable quick assemblyof 4 pole switches from basic 3 pole versions. The addition of auxiliary contacts, earth and neutralterminals enhances the range of applications. Three pole changeover and 6 pole versions are also available.
Featuresn Rated currents up to 315 An Touch-proof switch body (IP 20)n Water spray and dustproof mechanisms (IP 66)n Easily accessible terminalsn Clearly marked terminalsn Wide range of accessoriesn High AC 23 A ratingsn High breaking capacityn Electronic compatibility of auxiliary contactsn High short circuit withstand capacity (reduced risk of welding)n High overvoltage withstand
Selection of handles and control knobsThe same control knobs can be used with both base mounted and panel mounted switches. Two types ofpadlockable handles are available for one or three padlocks. Economical shaft extension kits are availableincluding thermoplastic (modular) or a metallic “telescopic” type. The latter has the advantage of beingsuitable for deep switchboard construction and incorporates a padlock facility on the switch body itself aswell as a door interlock mechanism and padlock on the operating handle.
Front panel mounting and base mounting switches Type LA 7 is the base mounted switch which can also be snapped onto standard DIN rail. Type LE 7 is the panel or front mounted switch. Both types utilise the same control knobs.
Enclosed load-break switchesThe LY 7 enclosed load-break switches are the perfect solution for local isolation of motors as well as otherplant and equipment. They are available in 3 pole and 6 pole, the latter being suited to downstreamisolation of 6 lead motors (star-delta starting). They cover motor sizes up to 45 kW. (Refer page 10 - 143).
High current load-break switches 125...315 AThese additions to the range extend the AC 23 kW rating of L 7 load-break switches to 110 kW. Available inbase or panel mounting, the high current switches are also complemented by a versatile range ofaccessories.
L 7 load-break switch
Clip-on accessories
Metal or modular plasticextension shafts
LY 7 enclosed isolator
LA 7 load-break switch
L 7 load-break switchesIntroduction
(16...100A)
IP 66
10 - 139GST not included
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Mounting typeLA 7 = Base mountLB 7 = Base mountLE 7 = Panel mountLF 7 = Panel mountLY 7 = EnclosedCurrent rating - AC 2116 = 16 amp25 = 25 amp32 = 32 amp40 = 40 amp63 = 63 amp80 = 80 amp100 = 100 amp125 = 125 amp160 = 160 amp250 = 250 amp315 = 315 ampSwitch function1753 = 3 pole1754 = 4 pole1756 = 6 pole3753 = 3 pole C/OHandle typeG = Disk type standardN = Disk type yellow/redE = Knob type standardL = Knob type yellow/redA = Knob type 1)P = DIN 45 knobEscutcheon size (mm) 2)4 = 48 x 48 (54 x 54)6 = 64 x 64 (67 x 67)8 = 88 x 88 (90 x 90)13 = 130 x 130 (135 x 135)Escutcheon marking175 = 0 - 1175I = Off - On375 = 1 - 0 - 2 3)SPE = Special engraving
Notes: Order clip-on accessories separately.1) Non padlockable - others are padlockable refer page 10 - 142 for further details.2) Figures in ( ) are for G and N type handles.3) For changeover switches.
L 7 Catalogue Number construction
LA 7 - 25 - 1753 - G - 6 - 175
L 7 load-break switches (16-315 A)
Possibilities for fitting accessories
Auxiliary contact blockor
1 auxiliary contact blockor
Earth terminalor
4th pole
Neutral terminal
1 auxiliary contact block ( 2 poles)or
1 auxiliary contact block ( 4 poles)
Panel mount (LE)
1 auxiliary contact blockor
Base mount (LA)Earth terminal
4th poleor
Neutral terminalor
1 auxiliary contact blockor
1 auxiliary contact block
1 auxiliary contact blockor
L 7 load-break switchesIntroduction
Pt A 2010 Sec 10 pg 107-152_Part A 2005/06 Sec 11pg 9#42848 28/10/10 7:47 AM Page 139
10 - 146 GST not included
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L 7 load-break switchesMounting and dimensions (mm)
LA 7-16
LA 7-25/32
LA 7-40/63
LA 7-80/100
LType
55
59
73
89
H
63
64
72
90
G
36
45
54
72
F
11
15
20
25
E
70
70
80
95
D3
4.5
4.5
4.5
5.6
LA 7 - base mounted switches - 3 pole (16 ... 100 A)
LA 7-25/32
LA 7-40/63
LA 7-80/100
Type Y min.
5
2.5
2.5
X ≥
142
150
150
Y max.
9.5
9.5
9.5
L ≥
90
90
90
LE 7 - panel mounted switches - 3 pole (16 ... 100 A)
LFS 2-A-4
LFS 2-E-4
LFS 2-A-6
LFS 2-E-6
LFS 7-N-4-175
LFS 2-N-6
LFS 2-G-6
LFS 7-G-4-175
Cat. No.Control handles
48 x 48
48 x 48
64 x 64
64 x 64
54 X 54
67 x 67
67 x 67
54 X 54
PQ
28
28
28
28
28
34
34
28
B
36
48
48
48
28
48
48
28
LE 7-16
LE 7-25/32
LE 7-40/63
LE 7-80/100
LType
51
60
74
90
H
63
64
72
90
F
36
45
54
72
B2
-
36
36
36
B1
-
-
48
48
Central hole fixing ø 22 mm (excluding L7-80/100)
Pt A 2010 Sec 10 pg 107-152_Part A 2005/06 Sec 11pg 9#42848 28/10/10 7:47 AM Page 146
10 - 147GST not included
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L 7 load-break switchesMotor disconnect switch exploded views
LA 7 - base mounted switches and LE 7 - front mounted switches
L7-AB40(shaft only)
LA Switch Bodies –pages 10 - 140 & 10 - 141
LE Switch Bodies –pages 10 - 140 & 10 - 141
Switch Handle Assemblies –page 10 - 142
Switch Handle Assemblies –page 10 - 142
Coupling is part of 125 ... 325 A switch.
10 - 148 GST not included
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L 7 load-break switchesMounting and dimensions (mm)
LA 7 - 3 pole with plastic shaft extension LA 2-G-2853 (16 .. 100 A)
LY 7 - enclosed load-break switches
LA 2-G2830
LA 2-G3194
LA 2-G3195
Type Y
2.5...9.5
9...18
14...23
LFS 2-A-4
LFS 2-A-6
LFS 2-N-6
LFS 2-G-6
Type B
36
48
48
48
Q
48 x 48
64 x 64
67 x 67
67 x 67
L with 1 extension
L with 2 extensions
L with 3 extensions
L with 4 extensions
L with 5 extensions
L with 6 extensions
No. of extensions LA 7-25/32
88
112
136
160
184
208
LA 7-40/63
102
126
150
174
198
222
LA 7-80/100
118
142
166
190
214
238
LA 7 with metal handle extension shaftLA 2-G3393
LA 2-G3394
Type A
110...235
230…350
LA 7-25/32
LA 7-40/63
LA 7-80/100
Type L 1)
60
74
90
1) DIN 46 277 (35 mm)+ 2.5 mm
Extensions plastic LA 2-G2853
LY 7-25/32 3 pole
6 pole
LY 7-40/63 3 pole
6 pole
LY 7-80/100 3 pole
Cat. No.
60
-
-
155
155
FE
140
172
172
-
-
C
95
125
125
175
175
B
150
180
180
230
230
A
115
-
-
195
195
H
86
105
105
120
120
Orange insert includedwith door coupling.
L7 G3664 - 37.5 mm
L7 G3576 - 20 mm
L7 G3666 - 47.5 mm
Knockout
44 mm
52 mm
57 mm
Plastic shaft
52 mm
57 mm
Metal shaft
Pt A 2010 Sec 10 pg 107-152_Part A 2005/06 Sec 11pg 9#42848 28/10/10 7:47 AM Page 148
10 - 149GST not included
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L 7 load-break switchesMounting and dimensions (mm)
LA 7-25/32
LA 7-40/63
LA 7-80/100
Type Y min.
5
2.5
2.5
X ≥
142
150
150
Y max.
9.5
9.5
9.5
X ≥
90
90
90
LFS 2-A-4
LFS 2-A-6
LFS 2-N-6
LFS 2-G-6
Type
48 x 48
64 x 64
67 x 67
67 x 67
P Q
28
28
34
34
B
36
48
48
48
LA 7-25/32
LA 7-40/63
LA 7-80/100
LType
84
98
114
H
64
72
90
G
90
108
144
F1
30
37
48.5
F2
15
17
23.5
E
70
80
95
D3
4.5
4.5
5.6
LA 7 - 6 pole and changeover switches
L 7 auxiliary switch
4th poles and terminals E and N
L 7-16
L 7-20/32
L 7-40/63
L 7-80/100
Type M
12.5
14
17.5
22
E
Pt A 2010 Sec 10 pg 107-152_Part A 2005/06 Sec 11pg 9#42848 28/10/10 7:47 AM Page 149
10 - 150 GST not included
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L 7 load-break switchesMounting and dimensions (mm)
3-4 pole box terminals
125
160
250
315
A
91
91
103
103
B
112
112
145
145
C
36
36
44
44
D
38
38
52.5
52.5
E
95
95
185
185
F
88
88
88
88
G
68
68
68
68
H
108
108
120
120
I
M5
M5
M5
M5
Switch body L 7-E 1)
A
B C
H I
D
E
O F G P
N M
L
Front installation bolt terminals 3-4 pole
125
160
250
315
A
91
91
103
103
B
112
112
145
145
C
38
38
52.5
52.5
D
65.5
65.5
60.4
60.4
E
3
3
4
4
F
20
20
26
26
G
36
36
44
52
H
88
88
88
88
I
68
68
68
68
L
10
10
13
13
M
90
90
100
100 to
106
N
64
64
70
70
O
M5
M5
M5
M5
P
M10
M10
M12
M12
Switch body L 7-F 1)
Size (Amps)
Size (Amps)
Notes: 1) Switch supplied with 195 mm aluminium shaft and coupling.
10 - 151GST not included
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L 7 load-break switchesMounting and dimensions (mm)
A
B C
max. Dmm2
G
E
F
E
L
H I
Base mounting box terminals 3-4 pole
125
160
250
315
A
91
91
98
98
B
112
112
145
145
C
38
38
52.5
52.5
D
95
95
185
185
E
2
2
2
2
F
118
118
140
140
G
6.4
6.4
6.4
6.4
H
108
108
126
126
I
64
64
70
70
L
36
36
44
44
Switch body L 7-A
A
B C
E
D
F
G
F
Q P O
H I
N
L M
Base mounting bolt terminals 3-4 pole
125
160
250
315
A
91
91
103
103
B
112
112
145
145
C
38
38
52.5
52.5
D
36.5
36.5
38.6
38.6
E
3
3
4
4
F
2
2
2
2
G
76
76
80
80
H
36
36
44
44
I
20
20
26
26
L
90
90
100
100 to
106
M
64
64
70
70
N
10
10
13
13
O
M10
M10
M12
M12
P
36
36
44
52
Q
6.4
6.4
6.4
6.4
Switch body L 7-B
Size (Amps)
Size (Amps)
10 - 152 GST not included
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L 7 load-break switchesMounting and dimensions (mm)
BOX earth and neutral terminal
125
160
250
315
A
37.8
37.8
52.3
53.2
B
64
64
71.1
71.1
C
108
108
126
126
D
37.8
37.8
52.3
52.3
E
64
64
80.6
80.6
F
108
108
126
126
Switch body L 7-F
14 1450 50
BOLT earth and neutral terminal
Auxiliary contacts
125
160
250
315
A
37.8
37.8
52.3
52.3
B
64
64
68
68
C
10
10
13
13
D
M10
M10
M12
M12
E
90
90
100
100 to
106
F
3
3
4
4
G
37.8
37.8
52.3
52.3
H
64
64
68
68
I
10
10
13
13
L
M10
M10
M12
M12
M
90
90
100
100 to
106
N
3
3
4
4
Switch body L 7-F
Size (Amps)
Size (Amps)
FRONT BASE
FRONT BASE
10 - 153GST not included
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L 7 load-break switchesMounting and dimensions (mm)
BA
Ø 2
7
L
68
88
5.4
Terminal cover
125
160
250
315
A
76.2
76.2
88
88
B
95
95
109.5
Switch body L 7-F
Door clutchesL for standard shaft93-199
Box terminals Bolt terminals
Size (Amps)
Actuator type
A13 – I13 G13 – N13
Actuator type
A8 – I8 G8 N8