ComPacT™ NSX400-630 MicroLogic Trip Units

This document provides installation, adjustment, and operational guidance for Schneider Electric ComPacT™ NSX400-630 circuit breakers equipped with MicroLogic 1.3/2.3 and 5.3/6.3 trip units.

For the latest documentation and support, visit www.se.com/support.

Important Safety Information

DANGER: HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH

Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel. Schneider Electric assumes no responsibility for consequences arising from the use of this material. All pertinent state, regional, and local safety regulations must be observed when installing and using this product.

Failure to follow these instructions will result in death or serious injury.

Product Overview

The ComPacT™ NSX400-630 series offers advanced circuit protection solutions. This guide focuses on the installation and configuration of MicroLogic trip units, specifically models 1.3/2.3 and 5.3/6.3.

Associated documentation:

ComPacT NSX100-630 User Guide (DOCA0187EN, DOCA0187FR, DOCA0187ES, DOCA0187ZH)
ComPacT NSX MicroLogic 5/6/7 User Guide (DOCA0188EN, DOCA0188FR, DOCA0188ES, DOCA0188ZH)

1. Required for Installation

Ensure you have the necessary tools and materials before proceeding with installation:

Screwdriver (PZ2)
Screwdriver (T25)
Snap-off screws (LV432513)
Voltage sensing device

2. Before Working on Equipment

Follow these critical steps before performing any work on the equipment:

Turn off all power supplying the equipment before working on or inside it.
Use the push-to-trip button to trip the device.
Use a properly rated voltage sensing device to confirm power is off.

Diagram illustrating the 'Trip' and 'Clack!' indicators on the device, and the push-to-trip button.

3. Installation

WARNING: HAZARD OF FIRE

When installing the MicroLogic trip unit, ensure that the snap-off screws (A) break when tightened. It is mandatory to use snap-off screws LV432513 for installation. If replacing a trip unit with one of a different rating, you must redefine trip unit settings and adapt connection characteristics.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

3.1 MicroLogic 1.3/2.3 Installation

Loosen and remove screws from the front cover or accessories as indicated in the instruction sheet shipped with the device.
Install the trip unit into its compartment.

Diagram showing the removal of front cover screws and the insertion of the MicroLogic 1.3/2.3 trip unit into its designated compartment. A screwdriver (T25) and snap-off screws (LV432513) are shown.

3.2 MicroLogic 5.3/6.3 Installation

3.2.1 MicroLogic 3P 5.3/6.3

Connect the trip unit supply wires to terminals T1 and T2. Use wires with a cross-section of 0.4-1.5 mm² (22-16 AWG) and torque to 0.2 N.m (2 lb-in).

Diagram showing the connection of wires to terminals T1 and T2 for MicroLogic 3P 5.3/6.3, with specifications for wire gauge and torque.

3.2.2 MicroLogic 3P 5.3E/6.3E + ENVT

Connect the trip unit supply wires.
Ensure the device trips with a 'Click!' sound when the push-to-trip button is activated.

Diagram illustrating the connection of ENVT module and the operation of the push-to-trip button for MicroLogic 3P 5.3E/6.3E.

3.2.3 MicroLogic 3P 5.3/6.3 + ZSI

Connect ZSI (IN) and ZSI (OUT) terminals using wires with a cross-section of 0.4-1.5 mm² (22-16 AWG).
Torque connections to 0.2 N.m (2 lb-in).

Diagrams showing the connection of ZSI (IN) and ZSI (OUT) terminals for MicroLogic 3P 5.3/6.3, including wire gauge and torque specifications.

4. Reinstall Front Cover

NOTICE: HAZARD OF EQUIPMENT DAMAGE

Be careful not to pinch wires when installing the front cover. Tighten all front cover screws to the specified torque. Do not overtighten screws, and do not use power equipment for torquing.

Failure to follow these instructions can result in equipment damage.

Put back the front cover and accessories as indicated in the instruction sheet shipped with the device.
The device is now ready to be placed in service.

Diagram showing the front cover being reinstalled, securing the trip unit.

5. Tripping Test

Perform a tripping test to verify the functionality of the trip unit.

Ensure the device is ON.
Press the push-to-trip button.
The device should indicate 'Tripped' after activation.

Sequence of images showing the device in ON state, the push-to-trip button being pressed, and the device in the 'Tripped' state.

6. MicroLogic 1.3/2.3 Trip Unit Adjustment

Adjust the trip unit settings (Ir, Isd) according to the required protection levels.

For 3P/4P units:

In: Set the nominal current rating.
Io: Adjust the short-circuit threshold.
Ir: Set the long-time pickup current. Example: Ir = 400 A x 0.95 = 380 A.
Isd: Set the short-time pickup current. Example: Isd = 380 A x 5 = 1900 A.

Diagram showing the adjustment dials for Ir, Io, and Isd on the MicroLogic 1.3/2.3 trip unit. Example calculations for Ir and Isd are provided.

For 4P units:

Settings include Ir, Io, Isd, and potentially Ig (for specific configurations like 3D+N/2 or 4D).

Diagram showing the adjustment interface for 4P units, indicating settings for Ir, Io, Isd, and Ig.

7. MicroLogic 5.3/6.3 Trip Unit Adjustment

7.1 Trip Unit Supply

Ensure the trip unit receives proper power supply.

Diagram showing the connection of the trip unit power supply using a specific connector (LV434206) and the 'Click!' confirmation.

7.2 Settings with Rotary Dial

Adjust trip unit settings using the rotary dial and buttons.

MicroLogic 5.3:

Set Ir (Long-time pickup current) and Isd (Short-time pickup current).
Example settings shown for Ir = 400 A and Isd = 5.0 x Ir.

Diagrams illustrating the adjustment of Ir and Isd using rotary dials and buttons on the MicroLogic 5.3 unit. Example values are displayed.

MicroLogic 6.3:

Set Ir (Long-time pickup current) and Ig (Ground fault pickup current).
Example settings shown for Ir = 400 A and Ig = 0.60 x In.

Diagrams illustrating the adjustment of Ir and Ig using rotary dials and buttons on the MicroLogic 6.3 unit. Example values are displayed.

7.3 Settings on HMI

Configure trip unit parameters via the Human-Machine Interface (HMI).

For MicroLogic 5.3: Adjust Ir, tr, Isd, tsd, li.

For MicroLogic 6.3: Adjust Ir, tr, Isd, tsd, li, lg, tg.

The HMI interface allows detailed setting adjustments for various protection functions. Steps involve navigating menus, selecting parameters, and confirming values.

Sequence of HMI screen displays showing the process of adjusting trip unit settings like Ir, Isd, and other parameters using the interface buttons. Timings for some settings (e.g., 3s, 5 min, 20s) are indicated.

8. Sealing

Instructions for installing a sealing accessory to secure trip unit settings.

Diagram showing the sealing accessory (LV429375) and its application.

9. Manufacturing Date

The product's manufacture date is coded as PP-YYYY-Www-D:

PP: Plant code
YYYY: Year of manufacture
Www: Week of manufacture
D: Weekday of manufacture (Monday = 1)

Example: 7Q-2019-W20-3 indicates a product manufactured at plant 7Q on Wednesday, May 15, 2019.

Additional Information and Warnings

California Proposition 65 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.

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