Schneider Electric NSX100-250 Micro Logic 4.2 Trip Units Instructions
- August 9, 2024
- Schneider Electric
Table of Contents
Schneider Electric NSX100-250 Micro Logic 4.2 Trip Units
Specifications
- Model: ComPacTTM NSX100-250
- Operational Range: >90% to >105% Ir
- Current Rating: 40/100A
- Voltage Rating: 300-500V
- Tripping Units: 1A, 3A
- Short-Circuit Breaking Capacity: li=1500A
- Release Time: U50e-6=0H4z40V
- Power Factor: 0.95 – 0.98
Product Usage Instructions
Installation and Setup
- Ensure all electrical connections are made by qualified personnel following safety regulations.
- Turn off all power sources before installing the product.
- Confirm power is off using a voltage sensing device before proceeding.
Operation
- Use appropriate personal protective equipment (PPE) when operating the equipment.
- Follow safe electrical procedures as per safety regulations.
- Do not turn on power until all installation steps are completed and verified.
Maintenance
- Regularly inspect the product for any signs of damage or wear.
- Perform maintenance tasks only when the power is turned off.
FAQs
-
Q: Who should install and maintain the electrical equipment?
- A: Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel.
-
Q: What should be done before working on the equipment?
- A: Turn off all power supplying the equipment and use a voltage sensing device to confirm power is off.
-
Q: What is the recommended power factor for this product?
- A: The product has a power factor ranging from 0.95 to 0.98.
Compact™ NSX100-250
Micrologic 4.2 Trip Units 
Compact NSX100–250 CompacT NSX100–630
Retain instruction sheet for future use. Visit our website at www.se.com to download the documents listed above (user guides UG or instruction sheets IS ) and other documents. 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
- All pertinent state, regional, and local safety regulations must be observed when installing and using this product.
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, NOM-029-STPS 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.
- Always use a properly rated voltage sensing device to confirm power is off.
- Put back all devices, doors, and covers before turning on power to this equipment.
- Beware of potential hazards, and carefully inspect the work area for tools and objects that may have been left inside the equipment.
- Failure to follow these instructions will result in death or serious injury.
WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov .
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
Do not install a MicroLogic 4.2 trip unit on a network with a voltage above
440 Va. Failure to follow these instructions will result in death or serious
injury.
WARNING
- ABSENCE OF EARTH-LEAKAGE PROTECTION
- Do not use MicroLogic 4.2AL trip units to protect your equipment against earth-leakage faults. These trip units only indicate the presence of an earth-leakage fault.
- Failure to follow these instructions can result in death, serious injury, or equipment damage.
Required for Installation
Before Working on
Equipment
- Turn off all power supplying this equipment before working on or inside equipment.
- Use push-to-trip button to trip the device.
- Use a properly rated voltage sensing device to confirm power is off.
Installation
WARNING
HAZARD OF FIRE
- When installing the MicroLogic trip unit, check that the snap-off screws break A when tightened.
- It is mandatory to use snap-off screws LV429513 to install a MicroLogic trip unit.
- In case of replacement of the trip unit by a trip unit with a different rating, you must:
- re-define the trip unit settings
- adapt the connection characteristics.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
- Loosen and remove screws of front cover or accessories as indicated in instruction sheet shipped with device.
- Install the trip unit into compartment.
Reinstall Front Cover
DANGER
- HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
- Put back front cover or accessories before energizing device to prevent access to live terminals.
- Failure to follow these instructions will result in death or serious injury.
NOTICE
HAZARD OF EQUIPMENT DAMAGE
- Be careful not to pinch wires when installing front cover.
- Tighten all front cover screws to stated torque.
- Do not over torque screws.
- Do not use power equipment to torque screws.
Failure to follow these instructions can result in equipment damage.
- Put back front cover and accessories as indicated in instruction sheet shipped with device.
- Device is ready to be placed in service.
Trip Unit Adjustment
WARNING
LOSS OF EARTH-LEAKAGE PROTECTION
Earth-leakage protection is inhibited when the IΔn dial is in the OFF
position. Failure to follow these instructions can result in death, serious
injury, or equipment damage.
Dielectric Test
WARNING
LOSS OF EARTH-LEAKAGE PROTECTION
- The dial must be in position while the B circuit breaker is in use.
- Failure to follow these instructions can result in death, serious injury, or equipment damage.
NOTICE
HAZARD OF TRIP UNIT DETERIORATION
- Turn the dial to the Test position A when performing a dielectric test.
- Turn the dial back to the original position B after the dielectric test.
- Do not close the transparent cover during the dielectric test.
Failure to follow these instructions can result in equipment damage.
Dielectric test authorized.
After the dielectric test.
After performing a dielectric test, carry out an earth-leakage test, see pages 12, 13 and 14
Earth-Leakage Protection Test
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
- Take all measures necessary to avoid the risk of electrocution when the external power supply voltage is greater than 30 Va.
- Failure to follow these instructions will result in death or serious injury.
- Press the test button to simulate an earth-leakage fault, which allows the differential protection function to be tested.
- This test is mandatory before commissioning.
- Periodic test: In case of absence of local regulation, Schneider Electric recommends that the test is carried out (1) every 3 months or (2) once a month for devices in corrosive or harsh environment.
MicroLogic 4.2
MicroLogic 4.2AL
Sealing
To install the sealing accessory, consult the instruction sheet GHD16296AA.
Manufacturing Date
The product’s manufacture date is coded PP-YYYY-Www-D, where
- PP : plant code
- YYYY : year of manufacture
- Www: week of manufacture
- D: weekday of manufacture (Monday = 1)
Eg: 7Q-2019-W20-3 = product manufactured at plant 7Q on Wednesday 15 May 2019
- Schneider Electric Industries SAS 35, rue Joseph Monier
- CS 30323
- F – 92506 Rueil Malmaison Cedex
- www.se.com
© 2023 Schneider Electric – All rights reserved.
- Schneider Electric Limited Stafford Park 5
- Telford, TF3 3BL
- United Kingdom
- www.se.com/uk
- NNZ4766907-01
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>