Schneider Electric 47952 MasterPact NW Air Circuit Breaker Instruction Manual
- June 17, 2024
- Schneider Electric
Table of Contents
47952 Master Pact NW Air Circuit Breaker
Instruction Manual
Chassis accessories
Installation manual
47952 Master Pact NW Air Circuit Breaker
Disclaimer
PLEASE NOTE
- Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel.
- No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material.
Safety instructions
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
- Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462 or local equivalent.
- This equipment must only be installed and serviced by qualified electrical personnel.
- Turn off all power supplying this equipment before working on or inside equipment. Lock the switchgear in the isolated position.
- Always use a properly rated voltage sensing device to confirm power is off.
- Install safety barriers and display a danger sign.
- Replace all devices, doors, and covers before turning on power to this equipment.
Failure to follow these instructions will result in death or serious injury.
Precautions before carrying out any work
Draw out circuit breaker
Necessary tools
Screwdriver (Pozidrive n°2, 3 or slotted).
Angled socket wrench.
Installation
Master Pact NW
Connected-disconnected carriage position switches
Disclaimer
PLEASE NOTE
- Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel.
- No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material.
Safety instructions
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
- Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462 or local equivalent.
- This equipment must only be installed and serviced by qualified electrical personnel.
- Turn off all power supplying this equipment before working on or inside equipment. Lock the switchgear in the isolated position.
- Always use a properly rated voltage sensing device to confirm power is off.
- Install safety barriers and display a danger sign.
- Replace all devices, doors, and covers before turning on power to this equipment.
Failure to follow these instructions will result in death or serious injury.
Precautions before carrying out any work
Draw out circuit breaker
Necessary tools
Screwdriver (Pozidrive n°2, 3 or slotted).
Angled socket wrench.
Basic configuration
Other configurations
Safety shutters
PLEASE NOTE
- Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel.
- No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
- Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462 or local equivalent.
- This equipment must only be installed and serviced by qualified electrical personnel.
- Turn off all power supplying this equipment before working on or inside equipment. Lock the switchgear in the isolated position.
- Always use a properly rated voltage sensing device to confirm power is off.
- Install safety barriers and display a danger sign.
- Put back all devices, doors, and covers before turning on power to this equipment.
Failure to follow these instructions will result in death or serious injury.
Safety instructions
WARNING: This product can expose you to chemicals including Diisononyl Phthalate (DINP), which is known to the State of Califia to cause cancer and Disobey Phthalate (DIDP) which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Required for Installation
Before working on the device
Draw out circuit breaker
Remove Circuit Breaker from Chassis
Master Pact NW08-40 3P/4P
Broken Shutter Removal
Broken Shutter Removal
Shutters Installation
- Install 2 shutters in the order indicated.
- Only 2-shutter installation for Master Pact NW08-403P circuit breaker is described in detail.
Shutters Installation
Check
WARNING
RISK OF SHUTTERS BEING JAMMED IN OPEN POSITION Release the pushbutton
slowly to simulate the movement of the device in the chassis and check that
the shutters are closed correctly. Failure to follow these instructions can
result in death, serious injury, or equipment damage.
Shutter Locking
Broken Shutter Removal
Shutters Installation
- Install shutters in the order indicated:
- 6 shutters for Master Pact NW40b-63 3P circuit breakers
- 8 shutters for Master Pact NW40b-63 4P circuit breakers.
Only the installation of one top and one bottom shutter for Master Pact NW40b-63 circuit breaker is described in detail.
Check
WARNING
RISK OF SHUTTERS BEING JAMMED IN OPEN POSITION
Release the pushbutton slowly to simulate the movement of the device in the
chassis and check that the shutters are closed correctly.
Failure to follow these instructions can result in death, serious injury, or
equipment damage.
Shutter Locking
Circuit Breaker Reinstallation
Breaker mismatch protection
Disclaimer
PLEASE NOTE
- Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel.
- No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
- Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462 or local equivalent.
- This equipment must only be installed and serviced by qualified electrical personnel.
- Turn off all power supplying this equipment before working on or inside equipment. Lock the switchgear in the isolated position.
- Always use a properly rated voltage sensing device to confirm power is off.
- Install safety barriers and display a danger sign.
- Replace all devices, doors, and covers before turning on power to this equipment.
Failure to follow these instructions will result in death or serious injury.
Before working on the device
Draw out circuit breaker 
Necessary tools
Screwdriver (Pozidrive n°2, 3 or slotted), Combination wrench.
Installation
Disconnected, connected and test carriage position lock
Disclaimer
PLEASE NOTE
- Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel.
- No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
- Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462 or local equivalent.
- This equipment must only be installed and serviced by qualified electrical personnel.
- Turn off all power supplying this equipment before working on or inside equipment. Lock the switchgear in the isolated position.
- Always use a properly rated voltage sensing device to confirm power is off.
- Install safety barriers and display a danger sign.
- Replace all devices, doors, and covers before turning on power to this equipment.
Failure to follow these instructions will result in death or serious injury.
Before working on the device
Draw out circuit breaker 
Necessary tools
Screwdriver (Pozidrive n° 2, 3 or slotted), combination wrench, tightening
tool Castell 47540.
Locking in disconnected position
Locking in disconnected, connected and test positions
Door interlock
Disclaimer
PLEASE NOTE
- Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel.
- No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
- Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462 or local equivalent.
- This equipment must only be installed and serviced by qualified electrical personnel.
- Turn off all power supplying this equipment before working on or inside equipment. Lock the switchgear in the isolated position.
- Always use a properly rated voltage sensing device to confirm power is off.
- Install safety barriers and display a danger sign.
- Replace all devices, doors, and covers before turning on power to this equipment. Failure to follow these instructions will result in death or serious injury.
Before working on the device
Draw out circuit breaker
Screwdriver (Pozidrive n°2, 3 or slotted), Combination wrench.
Notes
Racking interlock 
PLEASE NOTE
- Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel.
- No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material.
Safety instructions
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
- Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462 or local equivalent.
- This equipment must only be installed and serviced by qualified electrical personnel.
- Turn off all power supplying this equipment before working on or inside equipment. Lock the switchgear in the isolated position.
- Always use a properly rated voltage sensing device to confirm power is off.
- Install safety barriers and display a danger sign.
- Replace all devices, doors, and covers before turning on power to this equipment.
Failure to follow these instructions will result in death or serious injury.
Before working on the device
Draw out circuit breaker
Arc chamber cover
PLEASE NOTE
- Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel.
- No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
- Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462 or local equivalent.
- This equipment must only be installed and serviced by qualified electrical personnel.
- Turn off all power supplying this equipment before working on or inside equipment. Lock the switchgear in the isolated position.
- Always use a properly rated voltage sensing device to confirm power is off.
- Install safety barriers and display a danger sign.
- Replace all devices, doors, and covers before turning on power to this equipment. Failure to follow these instructions will result in death or serious injury.
Before working on the device
Draw out circuit breaker
Necessary tools
Screwdriver (Torx No. 30).
Notes
Schneider Electric Industries SAS
35 rue Joseph Monnier
CS 30323
F – 92506 Ruel Malmaison Cedex
www.se.com 47952
04443718AA-12
Printed on recycled paper.
Designed by: Schneider Electric
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Schneider Electric Limited
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Telford, TF3 3BL
United Kingdom
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