Helvar
| Data is subject to change without notice.
www.helvar.com
www.helvar.com
Helvar 458Mx Chassis: Installation Guide
8
9
Wiring Diagrams
3.3 Connect Mains Supply
1
2
3
4
5
6
7
8
Connect the loads to the output terminals as shown in the following figure (see separate
‘Wiring Diagrams’ for 458M1, 458M2 and 458M3 on page 9).
Dimmed load
OUTPUT TERMINALS
NEUTRAL
OUTPUTS
LIVE
OUTPUTS EARTH
Connect the mains supply to the appropriate terminals (see separate ‘Wiring Diagrams’ for
458M1, 458M2 and 458M3 on page 9):
1. Connect live to the appropriate MCB block(s):
• In the 458M1, connect L.
• In the 458M2, connect L1 and L2.
• In the 458M1, connect L1, L2, and L3
2. Connect neutral (N) to the neutral terminal block.
In the 458M1, the neutral terminal block is located between the output terminal block
and the MCB block.
In the 458M2 and in the 458M3, the neutral terminal block is
located at base of the unit,
under the SDIM cable loom.
3. Connect earth (E) to the earth terminal block.
Note 1:
The bypass terminals allow you to operate and test the lights and the installation wiring
without (a) module(s) connected to the chassis.
Note 2:
Always dock unused dimmer feeds in bypass connectors.
Note 3:
Make sure that the MCB terminals are clearly identified for load circuit connection.
3.2 Connect Loads
458M1
458M2
458M3
LOAD
LOAD
N
E
L
OUTPUT
TERMINALS
M
A
I
N
S
S
U
P
P
L
Y
BYPASS
TERMINALS
SDIM
cable
loom
N
E
M
A
I
N
S
S
U
P
P
L
Y
OUTPUT
TERMINALS
OUTPUT
TERMINALS
NEUTRAL
OUTPUTS
LIVE
OUTPUTS
EARTH
NEUTRAL
OUTPUTS
LIVE
OUTPUTS EARTH
L1
(mains)
L2
(mains)
BYPASS
TERMINALS
BYPASS
TERMINALS
A
A
A
B
B
C
LOAD
N
E
M
A
I
N
S
S
U
P
P
L
Y
OUTPUT
TERMINALS
OUTPUT
TERMINALS
NEUTRAL
OUTPUTS
NEUTRAL
OUTPUTS
LIVE
OUTPUTS
LIVE
OUTPUTS
EARTH
EARTH
NEUTRAL
OUTPUTS
LIVE
OUTPUTS EARTH
NEUTRAL
OUTPUTS
LIVE
OUTPUTS EARTH
LOAD
LOAD
LOAD
L1
(mains)
L2
(mains)
L3
(mains)
BYPASS
TERMINALS
BYPASS
TERMINALS
BYPASS
TERMINALS
SDIM
cable
loom
SDIM
cable
loom
OUTPUT
TERMINALS
