Description
The Compact NS MCCB family (part of Schneider Electric’s Pact Series) is designed to protect electrical circuits and equipment against faults such as overload, short‑circuit and earth‑leakage conditions. Unlike basic thermal‑magnetic breakers, Compact NS MCCBs are typically equipped with electronic trip units (MicroLogic) that offer adjustable protection settings, built‑in power and energy measurement, and optional communication and coordination capabilities for modern power management.
These breakers are built for medium‑ to high‑current applications (commonly 630 A to 3200 A), and are available in fixed, plug‑in or withdrawable mounting types. Both 3‑pole and 4‑pole configurations allow phase‑to‑phase and neutral protection depending on system requirements. With high breaking capacities (up to ~200 kA at 415 V AC) and robust compliance with international standards (e.g., IEC 60947‑2), Compact NS MCCBs are ideal for main feeders, distribution boards and industrial panelboards.
Compact NS also supports a wide line of field‑installable accessories, such as shunt trips, undervoltage releases, auxiliary contacts, earth‑leakage modules and communication kits for integration with building or industrial automation systems.
📊 Specifications Table (Typical)
| Specification | Details |
|---|---|
| Product Series | Schneider Electric Compact NS MCCB |
| Product Type | Molded Case Circuit Breaker (MCCB) |
| Rated Current Range (In) | 630 A to 3200 A |
| Poles | 3‑pole and 4‑pole |
| Rated Operational Voltage (Ue) | 220 V to 690 V AC (typical low‑voltage distribution) |
| Rated Insulation Voltage (Ui) | 800 V / 1000 V |
| Rated Impulse Withstand (Uimp) | 8 kV |
| Breaking Capacity (Icu) | 30 kA to 200 kA (depending on frame and spec) |
| Service Break Capacity (Ics) | 22 kA to 150 kA |
| Trip Unit | MicroLogic electronic units (adjustable) |
| Protection Functions | Overload, short‑circuit, selective earth fault (with modules) |
| Mounting Options | Fixed, Plug‑in, Withdrawable |
| Auxiliaries / Accessories | Shunt/UV releases, Aux contacts, Earth‑leakage modules, remote displays |
| Standards / Compliance | IEC 60947‑1/‑2 and related immunity/safety tests |
| Typical Applications | Main feeder protection, distribution panels, industrial power systems |
🔍 Key Features
✔ Electronic protection and measurement: Built‑in MicroLogic units provide adjustable trip settings and electrical measurements (current, power, energy).
✔ High breaking capacity: Rated for heavy fault currents (e.g., up to ~200 kA at 415 V).
✔ Modular accessories: Field‑installable modules (earth leakage, coils, contacts).
✔ Multiple mount types: Supports fixed, plug‑in or withdrawable installations for easy maintenance.
✔ Flexible installation: Can be installed in any position inside switchboards or panels.
📌 Typical Uses
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Distribution board main and feeder protection
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Industrial power distribution & plant machinery
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Motor feeder and selective fault protection
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Energy monitoring and integration with building automation
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