6
INM MTL 9492-PS-PLUS Rev 2
3 .4 Earth rail and tagging accessories
This section explains how to specify and assemble earth rail and tagging strip accessories for the
MTL 9492-PS-PLUS power supplies. The accessories consist of mounting brackets, earth rails,
tagging strips and associated parts. They provide facilities for earthing, terminating cable screens and
tagging (identifying) the positions of individual units.
3 .4 .1 Parts list
IMB57
Insulating mounting block (Figures 3 .4, 3 .5 & 3 .6)
One required at each end of a tagging strip/earth rail. Suitable for low-profile (7.5mm) and high-
profile (15mm) symmetrical DIN rail.
ERB57S
Earth-rail bracket, straight (figure 3 .10)
Nickel-plated bus bar; supplied with two push fasteners, one earth-rail clamp (14mm, 35mm
2
) and
one earth cable clamp (10mm, 16mm
2
).
Note: ERB57S is the preferred choice of earth-rail bracket. It is usually fitted in the upper slot
on insulating mounting block IMB57
.
Where the earth rail is required to be positioned at a lower height and to allow access to the
IMB57 mounting screws, the straight earth-rail bracket ERB57S can be inserted in the lower
slot, but only after insulating mounting blocks IMB57 are clamped to the DIN rail. This may not
be possible if, for example, trunking is fitted. In this case, fit offset earth-rail bracket ERB570
(see figure 3.4 & 3.10) in the upper slot: the mounting blocks can then be fitted in a restricted
space with this bracket already fitted.
ERB570
Earth-rail bracket, offset (figure 3 .10)
Nickel-plated bus bar; supplied with two push fasteners, one earth-rail clamp (14mm, 35mm2)
and one earth cable clamp (10mm, 16mm2).
ERL7
Earth rail, 1m length (figure 3 .10)
Nickel-plated bus bar; may be cut to length.
TAG57
Tagging strip, 1m length (figure 3 .10)
Cut to size. Supplied with tagging strip label.
TGL57
Tagging strip labels, set of 10 x 0 .5m
Spares replacement, for use with TAG57 tagging strip.
MS010
DIN rail module spacer, 10mm, pack of 5 (figure 3 .8)
Grey spacer; one required between each MTL 9492-PS-PLUS and any adjacent module on a DIN rail,
to provide 10mm air-circulation space between modules.
ETM7
Earth terminal, bag of 50 (figure 3 .9)
For terminating cable screens and 0V returns on the ERL7 earth rail. For cables ≤ 4mm
2
.
TH5000
Tag holder
Spares replacement.
Connectors
Spares replacement: HAZ1-3, HAZ4-6, HAZ-CJC, PWR5000, SAF7-9, SAF10-12 (SAF1-3 and SAF4-6
grey connectors, also available for use in safe-area applications).
