18
Series NRX Low Voltage Power (Air)
Circuit Breakers User Manual
EATON CORPORATION www.eaton.com
Instructional Book MN01301003E
Effective July 2011
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Breaker in cassette
•
Primary connections not made
•
Secondary connections made
Figure 16. TEST Position
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Breaker in cassette
•
Primary connections made
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Secondary connections made
Figure 17. CONNECT Position
With the circuit breaker sitting solidly on the extension rails in its
WITHDRAWN position, proceed with the following five steps to move
the circuit breaker through its other positions.
Step 1: Make sure the circuit breaker position indicator, located in
the right lower portion of the circuit breaker, indicates DISCONNECT
(Figure 15).
Step 2: If the indicator window indicates anything other than
DISCONNECT, use the breaker’s on board tool (racking tool) to
get the circuit breaker in the proper levering position. Insert the
levering tool into its compatible front accessible fitting, and rotate it
counterclockwise until DISCONNECT is indicated in the window. An
audible “click” may be heard. This is the levering-in’s detent system
engaging, which provides positive feedback when the device is in each
discrete position.
ote:N The Detent will engage at each discrete position (Disconnect,
Test, Connect) and requires the user to manually reset the system
before proceeding to the next position.
Figure 18. Step 2
“CLICK” SOUND
DETENT ENGAGED
Figure 18a. Step 2
Step 3: Carefully push the circuit breaker into its compartment until it
stops. The extension rails can now be folded up and latched.
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