Schneider Electric Micrologic 6.0H 47062 CIRCUIT BREAKER Trip Unit

The Schneider Electric Micrologic 6.0H (47062) is an electronic trip/control unit for Masterpact NT/NW air circuit breakers. It can track energy usage and analyze harmonics, can be set up on-site, and protects against overloads, short circuits, sudden faults, and ground faults while also monitoring waveforms and harmonics.

Product Details:

• Brand: Schneider Electric (in some markets, it is also sold under the former names Merlin Gerin and Square D). ​
• The part number is 47062. ​
• Model 6.0H of the Micrologic H trip units series/family. ​
• Function: This is a field-installable control/trip unit for Masterpact NT and NW air circuit breakers. It is not a freestanding breaker frame. ​
• Depending on the settings, the typical frames that are supported are NS/NT/NW and compatible Masterpact/PowerPact type frames. ​

SCHNEIDER ELECTRIC MICROLOGIC 6.0H Key Features

1) Some common technological features of Micrologic 6.0H trip units like 47062 are:

2) Network: AC power systems that work with low-voltage air circuit breakers in distribution switchboards. ​

3) Number of poles: Works with 3- and 4-pole breaker setups (Masterpact NT/NW). ​

4) The rated voltage capability of the breaker frame can be up to about 600 V class, depending on the frame. The trip unit itself is a low-voltage electronic module that gets its power from internal CTs and an auxiliary supply if there is one. ​

5) Long-time pickup range: It can be changed in steps (9 settings) based on the size of the breaker rating plug, for example, 0.4–1 × In. ​

6) Long time delay: Can be set anywhere from 0.7 to 24 seconds at 6 × Ir and 12.5 to 600 seconds at 1.5 × Ir, so it can work with devices that come after it. ​

7) Thermal memory: about 20 minutes, keeps a record of heating history after overloads to keep protection accurate. ​

8) The trip/control unit usually works best between −25 °C and +70 °C. ​

9) Plugs into the front of the Masterpact NT/NW breaker as a removable control unit that can be replaced in the field for upgrades or replacements. ​

10) Keep in mind that the exact pickup ranges and step values depend on the size of the breaker rating plug and frame. Schneider Electric’s Masterpact NT/NW protection tables show detailed curves. ​

Data about the environment and compliance

• Environmental profile: Schneider says that part 47062 has a total lifespan carbon footprint of about 32 (internal Schneider unit) and that the packaging is made up of a lot of recycled cardboard. ​
• REACh and RoHS: Schneider’s REACh declarations and green product documentation give information on how products meet environmental standards. ​
• The operating temperature range is −25 to +70 °C, which is fine for most switchboard settings when the device is put in the right enclosure. ​

Functions of protection (LSIG)

• Micrologic 6.0H is an LSIG unit, which means it gives
• L (Long-time): Adjustable pickup for overload prevention
• I r Ir and time delay, using thermal memory to remember how hot it was before
• S (Short-time): Short-time overcurrent protection with adjustable pickup I s d Isd, adjustable delay t s d tsd, and options for fixed or inverse-time I 2 t I 2 t characteristics to improve selectivity
• I (Instantaneous): Instantaneous magnetic protection against high-magnitude faults that happen in the short time range
• G (Ground fault): Adjustable ground-fault pickup Ig and delay tg for protecting equipment and systems
• These capabilities enable zone-selective interlocking (ZSI) between upstream and downstream breakers, enhancing coordination in intricate switchboards. ​

Functions of measurement and harmonics

-> The “H” in 6.0H stands for harmonic metering capability, which is in addition to conventional Micrologic protection and power metering. Some important measuring aspects are:

-> True RMS current and typically voltage measurement, with the ability to show phase and neutral currents and other system metrics based on how the breaker is set up. ​

-> Values of power and energy (kW, kWh, and other related amounts) for keeping an eye on loads and managing energy. ​

-> Harmonic analysis: sampling waveforms and figuring out harmonic distortion up to the 31st harmonic, as well as capturing waveforms during fault events for diagnostic purposes. ​

-> These features make it possible to find bad power quality conditions, like high total harmonic distortion, which can damage equipment. ​