Front Face Description

Front Face

The main controls, operation indicators, settings, and locking mechanisms are on the front of an electrically-operated circuit breaker (with motor mechanism).

A Faceplate

B Charging handle

C Keylocking in O (OFF) position (option available for ComPact NSX400-630 only)

D Sealing accessory

E Main contacts position indicator

F Spring-charged and ready-to-close indicator

G Padlocking in O (OFF) position

H Closing (I (ON)) and opening (O (OFF)) pushbuttons

I Manual/automatic operating mode selector

J Trip unit

For more information about motor mechanism installation, consult the instruction sheets on the Schneider Electric website:

GHD16272AA, ComPact NSX100-250 motor mechanism
GHD16318AA, ComPact NSX400-630 motor mechanism

Main Contacts Position Indicator

Indicator	Description
	The circuit breaker is closed.
	The circuit breaker is open or tripped.

NOTE: Use the SD or SDE auxiliary contact to distinguish the Trip position from the O (OFF) position.

Spring-Charged and Ready-to-Close Indicator

Indicator	Description
	Closing spring charged
	Closing spring discharged

NOTE: The closing spring only provides the necessary energy for circuit breaker closing. The circuit breaker mechanism supplies the energy for tripping.

Manu/Auto Selector

The Manu/Auto button selects the operating mode:

In automatic operating mode, only electrical commands are executed.
In manual operating mode, all electrical commands are disabled.