Eaton NRX Series Instruction Leaflet

Instructional Leaflet
Installation and removal instructions
for Series NRX fixed breaker
mounting feet
Instructions apply to:
Series NRX, Type NF Frame
ANSI, UL1066, UL489/IEC, IZMX16, IZM91
1600 NRX SUB-TITLE IMAGE (12/15/2010)
(1) ONLY QUALIFIED ELECTRICAL PERSONNEL SHOULD BE PERMITTED TO
WORK ON THE EQUIPMENT.
(2) ALWAYS DE-ENERGIZE PRIMARY AND SECONDARY CIRCUITS IF A
CIRCUIT BREAKER CANNOT BE REMOVED TO A SAFE WORK LOCATION.
(3) DRAWOUT CIRCUIT BREAKERS SHOULD BE LEVERED (RACKED) OUT TO
THE DISCONNECT POSITION.
(4) ALL CIRCUIT BREAKERS SHOULD BE SWITCHED TO THE OFF POSITION
AND MECHANISM SPRINGS DISCHARGED. FAILURE TO FOLLOW THESE
STEPS FOR ALL PROCEDURES DESCRIBED IN THIS INSTRUCTION LEAFLET
COULD RESULT IN DEATH, BODILY INJURY, OR PROPERTY DAMAGE.
THE INSTRUCTIONS CONTAINED IN THIS IL AND ON PRODUCT LABELS
HAVE TO BE FOLLOWED. OBSERVE THE FIVE SAFETY RULES:
– DISCONNECTING
– ENSURE THAT DEVICES CANNOT BE
ACCIDENTALLY RESTARTED
– VERIFY ISOLATION FROM THE SUPPLY
– EARTHING AND SHORT-CIRCUITING
– COVERING OR PROVIDING BARRIERS TO
ADJACENT LIVE PARTS
DISCONNECT THE EQUIPMENT FROM THE SUPPLY. USE ONLY
AUTHORIZED SPARE PARTS IN THE REPAIR OF THE EQUIPMENT. THE
SPECIFIED MAINTENANCE INTERVALS AS WELL AS THE INSTRUCTIONS
FOR REPAIR AND EXCHANGE MUST BE STRICTLY ADHERED TO PREVENT
INJURY TO PERSONNEL AND DAMAGE TO THE SWITCHBOARD.
IL01301030E
WARNING
WARNING
Effective December 2010
Supersedes June 2010
IL01301030EH03

Section 1: General information

Rear connected fixed circuit breakers can be mounted on a
suitable horizontal or vertical mounting surface using a pair of
left and right side mounting feet. In addition, front-connected
fixed circuit breakers can also use the mounting feet for
mounting a breaker on a suitable vertical surface, although
this is not the most common method used.
Seven pieces of mounting hardware are provided to mount
the pair of mounting feet (five M5 x 12 mounting screws, one
M5 x 25 mounting bolt, and one M5 nut). The M5 x 25 bolt,
and M5 nut are used with the right side mounting foot only to
ground (earth) the mounting foot to the breaker mechanism.
One mounting hole and one slot are provided in each mount-
ing foot for attaching the circuit breaker to an appropriate
horizontal mounting surface. Two mounting slots are provided
in each mounting foot for attaching the circuit breaker to an
appropriate vertical mounting surface. M8 or 5/16-inch mount-
ing hardware is recommended for mounting the breaker, and
is provided by the customer (Figure 1).
Figure 1. Right Side Mounting Foot