F3
Siemens Energy & Automation, Inc. 1000 McKee Street Batavia, Illinois 60510
SFIM-7002A-0901
Section F, September, 2001
4.1.8 The MCC unit disconnect operator for 600 ampere
maximum units shall operate in a vertical (up-
down) plane (except high density units which have
horizontal motion) and shall remain engaged with
the disconnect device at all times, regardless of
the unit door position. The operating handles shall
be interlocked with the unit door so that the door
cannot be opened with the disconnect device in
the ON position, nor can the disconnect device be
turned ON with the unit door open except by oper-
ation of a defeater mechanism. Indication of the
disconnect device shall be clearly indicated by the
position of the operating handle. When applied
with circuit breaker devices, the handle shall also
provide clear indication of a circuit breaker trip.
4.2 When pilot lights, push buttons or sector switches are
specified. The devices shall be mounted in a formed
metal device panel that is capable of accepting four (4)
such devices in any combination. The device panel shall
be secured to the unit door for normal operation, or
mounted on the plug-in unit as required for unit removal
and bench testing.
4.2.1 Pilot devices, when specified, shall be 22 mm in
diameter, rated for NEMA 4 (IP67) applications.
Connections to 22 mm pilot devices shall be made
to touch resistant screw type terminations. Pilot
device contacts shall be rated at 10A, 600 VAC
(NEMA A600).
-- OR --
Pilot devices when specified, shall be heavy duty,
oil tight 30mm devices with a NEMA 4 rating. Pilot
device contacts shall be rated at 10A, 600 VAC
(NEMA A600). The pilot device bodies shall be fab-
ricated from metal.
4.3 Unit identification nameplate shall be provided for each
unit. Nameplates shall be a black surface with white
core. Engraving shall cut through the black surface
exposing white lettering of the unit designation.
Nameplates shall be 1" tall by 3
1
/
2
" wide. Adhesives or
glues are not an acceptable means of mounting unit
nameplates.
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