ComPacT NSX MicroLogic Trip Units

Product Variants

This document pertains to MicroLogic 2.2, 5.2, and 6.2 trip units for ComPacT NSX circuit breakers.

Product Codes:

• ComPacT NSX100-250 / ComPacT NSX100-630
• ComPacT NSX MicroLogic 5/6/7 Series
• Documentation References: DOCA0187EN, DOCA0188EN (and other language variants)

Support and Documentation

Retain this instruction sheet for future use. Visit the Schneider Electric website at www.se.com to download the full user guides (UG) and instruction sheets (IS) for this product and other related documents.

Important Notes

• 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.

⚠️ Hazard Warnings

DANGER: HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH

• Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. Refer to standards such as NFPA 70E, CSA Z462, NOM-029-STPS, or local equivalents.
• This equipment must only be installed and serviced by qualified electrical personnel.
• Turn off all power supplying this equipment before working on or inside it.
• Always use a properly rated voltage sensing device to confirm power is off.
• Ensure all devices, doors, and covers are replaced before turning on power.
• 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.

Installation Requirements

1. Required for Installation

Ensure you have the necessary tools:

• PZ2 screwdriver
• 3.5 mm screwdriver
• T25 screwdriver

For MicroLogic trip unit installation, use snap-off screws LV429513. Verify these screws break when tightened.

Before Working on Equipment

2. Preparation Steps

Before performing any work on or inside the equipment:

• Turn off all power supplying the equipment.
• Use the push-to-trip button to trip the device.
• Use a properly rated voltage sensing device to confirm power is off.

Visual Description: A diagram shows a circuit breaker with a green push-to-trip button labeled 'Trip' and a red 'OFF' button. An arrow indicates using a screwdriver. Another diagram shows a voltage sensing device.

Installation Procedures

3. Installing the Trip Unit

Hazard of Fire:

• When installing the MicroLogic trip unit, check that the snap-off screws break when tightened.
• It is mandatory to use snap-off screws LV429513 to install a MicroLogic trip unit.
• If replacing a trip unit with one of a different rating, you must redefine the trip unit settings and adapt the connection characteristics.

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

Steps:

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

Visual Description: A diagram shows a trip unit being inserted into a compartment. Another diagram illustrates removing screws from a front cover using a screwdriver.

3.2 MicroLogic 5.2/6.2 Installation Details

This section details the physical installation and connection of MicroLogic 5.2/6.2 trip units for 3P/4P configurations, including variants with ENCT, ENVT, and ZSI (OUT) modules.

Connections and Specifications:

• Torque: 0.2 N.m (2 lb-in) for MicroLogic 3P 5.2/6.2 and MicroLogic 5.2/6.2 + ZSI (OUT); 0.9 N.m (8 lb-in) for T10 terminal.
• Wire Gauge: 0.4–1.5 mm² (22–16 AWG) for specific connections.

Visual Description: Diagrams illustrate the mounting of MicroLogic trip units (e.g., GHD16303AA, LV429451) into circuit breaker frames. Connections for ENCT, ENVT, and ZSI modules are shown, along with torque and wire gauge specifications. An indicator shows 'no' and 'ok' states for proper installation.

Hazard Warnings for MicroLogic 5/6 Trip Units

DANGER: HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH

• Install MicroLogic 5/6 trip units with the internal rubber insulation screen in the right position.

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

Visual Description: A diagram shows a MicroLogic 5/6 trip unit being installed, highlighting the correct placement of an internal rubber insulation screen.

4. Reinstall Front Cover

DANGER: HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH

• Put back the front cover or accessories before energizing the 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 the front cover.
• Tighten all front cover screws to the stated torque. Do not overtighten.
• Do not use power equipment to torque screws.

Failure to follow these instructions can result in equipment damage.

Steps:

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

Visual Description: A diagram shows a front cover being reattached to a circuit breaker. Another diagram illustrates a warning symbol for equipment damage.

5. Tripping Test

This section describes the procedure for performing a tripping test on the MicroLogic trip units.

Visual Description: A sequence of diagrams shows the steps for a tripping test: 1. Turn the breaker ON. 2. Press the reset button. 3. Press the push-to-trip button, resulting in a 'Click!' and the breaker showing 'Tripped'.

6. MicroLogic 2.2: Trip Unit Adjustment

This section details how to adjust the trip unit settings for MicroLogic 2.2 models (3P/4P and 4P configurations).

Parameters:

• In (Nominal Current): Set using a dial, e.g., 40/100A.
• Io (Earth Fault): Adjustable range, e.g., 0.4 to 1.0 x In.
• Ir (Long Time Overcurrent): Adjustable range, e.g., 0.4 to 1.0 x In. Formula: Ir = 2 x Io (Io x 0.9 ... 1). Example: Ir = 63 x 0.95 = 59.9 A.
• Isd (Short Time Overcurrent): Adjustable range, e.g., 1.5 to 10 x Ir. Formula: Isd = Ir x 4 (Ir x 1.5 ... 10). Example: Isd = 59.9 x 5 = 299 A.

Visual Description: Diagrams show the adjustment dials for MicroLogic 2.2 trip units, indicating settings for In, Io, Ir, and Isd. A graph illustrates the relationship between Ir, Io, and Isd. A separate diagram shows the 4P configuration with settings for N (Neutral) and 3D+N/2, 4P+4D.

Documentation: ComPacT NSX100-630 User Guide (DOCA0187EN, etc.)

7. MicroLogic 5.2/6.2: Trip Unit Adjustment

7.1 Trip Unit Supply

This section covers the power supply connection for MicroLogic 5.2/6.2 trip units.

Visual Description: Diagrams show the connection of the trip unit to its power source, with 'Click!' indicators for proper connection.

7.2 Settings with Rotary Dial

Instructions for setting parameters using rotary dials for MicroLogic 5.2 and 6.2 trip units.

MicroLogic 5.2 Settings:

• In (Nominal Current): e.g., 40/100A.
• Ir (Long Time Overcurrent): Example setting: 63A. Formula: Ir = 63.
• Isd (Short Time Overcurrent): Example setting: 5.0. Formula: Isd = Ir x 3 (Ir x 1.5 ... 10). Example: Isd = 63 x 5 = 315 A.

MicroLogic 6.2 Settings:

• In (Nominal Current): e.g., 40/100A.
• Ig (Earth Fault): Example setting: 0.60. Formula: Ig = 100 x 0.6 = 60 A.

Visual Description: Diagrams show the rotary dials for MicroLogic 5.2 and 6.2 trip units, illustrating the adjustment of In, Ir, Isd, and Ig parameters. Example calculations are provided.

7.3 Settings on HMI

This section details how to adjust settings via the Human-Machine Interface (HMI) for MicroLogic 5.2 and 6.2 trip units.

MicroLogic 5.2 Settings (Ir, tr, Isd, tsd, li):

Visual Description: A sequence of HMI screen captures shows the step-by-step process of adjusting settings like Ir (e.g., from 0.5 to 2.0), Isd, tsd, and li. Confirmation screens ('OK') and time delays (3s, 20s) are shown.

MicroLogic 6.2 Settings (Ir, tr, Isd, tsd li, lg, tg):

Visual Description: Similar to the 5.2 settings, this shows HMI adjustments for MicroLogic 6.2, including parameters like Ir, lg, and tg.

Documentation: ComPacT NSX MicroLogic 5/6/7 User Guide (DOCA0188EN, etc.)

8. Sealing

Instructions for installing the sealing accessory (GHD16296AA) to secure trip unit settings.

Visual Description: A diagram shows the sealing accessory (GHD16296AA) and indicates it requires 6 units. Another diagram shows the accessory being applied to a MicroLogic 2.2 and a MicroLogic 5.2/6.2 unit.

9. Manufacturing Date

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

• 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.

Visual Description: A diagram illustrates the MicroLogic 2.2 and 5.2/6.2 units with a reference to the manufacturing date information.