Crabtree 125SW3 Installation Instructions

DANGER: LIVE PARTS ENCLOSED. Ensure the unit is installed by a qualified competent person in accordance with all
relevant legislation and regulations including building regulations and wiring regulations BS7671. If in doubt contact a
qualified competent person.
IMPORTANT INFORMATION
Follow the instructions below before working on or inside the equipment.
•
Turn off all power supplies
•
Always use a calibrated volt-sensing device to confirm the power is off.
•
Replace all devices, doors and covers before turning on the power to this equipment.
•
To avoid ingress of swarf and similar material, always remove gland plates to allow cutting/slotting for cable entries.
•
Do not use power screwdrivers on electrical connections.
Failure to follow these instructions could result in serious injury or death.
Note: - It is good engineering practice to apply generous
derating factors or make provision for free air between devices.
In these situations, and in common with other manufacturers,
we recommend a 60 % diversity factor is applied to the
outgoing device's nominal rated current where it is intended to
load the outgoing device continuously (in excess of 1 hour).
Installation of Incoming Devices
The choice of upstream protection for the incoming switch-
disconnector is determined by the prospective fault level (PFL),
at the point of installation.
PFL up to 10 kA
Incomer
125SW3, 125 A backup
125SW4 fuses
Important – the terminal screws of all incoming devices should
be fully slackened before fitting.
Outgoing Devices
The maximum rating of the outgoing devices to be installed in
this distribution board is 63 A
DIN Mounted 3 Pole Switch Disconnector 125SW3 & Direct
Connection
▪
Ensure supply is switched off.
▪
Push the incomer up to the base of the busbar molding.
▪
Make sure that the DIN clips locate on the half DIN rail on
the base plate.
▪
Press and hold the incomer in place while tightening the
connections to the busbar stubs.
▪
Connections should be tightened to a torque as
recommended for device been fitted.
DIN Mounted 4 Pole Switch Disconnector 125SW4 or RCD
▪
Ensure supply is switched off.
▪
Fix the DIN rail to the lower position using the fixing
screws provided.
▪
Fix the Switch or RCD on to the DIN rail.
▪
Remove neutral link and box lug terminal from terminal
bar and pan assembly.
▪
Use the 4-pole mounting kit (18LK125) to make
connections from the Switch or RCD to the busbar and
neutral bar.
▪
Connections should be tightened to the torque as
recommended for device being fitted
▪
For more information refer to the Product Catalogue
Electrium Sales Limited, Walkmill Lane, Cannock, WS11 0XE
Tel: 01543 455000 Fax: 01543 455001
LF1718_1.docx
Installation instructions,
125A Distribution Board
PFL 10 to 16 kA PFL 10 to 16 kA
100 A backup
DO NOT USE
fuses
BS EN 61439-3
Outgoing way numbering
The outgoing ways must be identified. If the busbar assembly
is not pre-numbered, then the installer must number the
outgoing ways.
Odd numbered ways on the left of the board way 1 being either
at the top or bottom of the busbar assembly. Even numbered
ways on the right of the board ascending in the same direction
as the odd numbers. Way 1 must be opposite way 2, both
either at the top or the bottom of the busbar assembly.
Note: - Neutral and Earth blank outgoing labels are provided.
Installation of RCBOs
▪
Ensure supply is switched off.
▪
Only Crabtree RCBOs can be used in Crabtree
Distribution Boards:
o
o
▪
Fully slacken all RCBO busbar terminal screws.
▪
Push RCBO onto appropriate busbar outgoing way
making sure that the DIN clip faces towards the busbar
assembly.
▪
Fully tighten busbar connections to a recommended
torque of device
▪
Connect RCBO Neutral lead to appropriate numbered
terminal on the neutral terminal bar.
▪
Ensure both live and neutral outgoing cables are
terminated on the RCBO outgoing terminals.
▪
Connect the functional earth lead to appropriate terminal
on earth terminal bar.
6HSR▪▪/30B, 6HSR▪▪/30C
6HSR▪▪/30C / LT
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