Description
The Compact NSX range of MCCBs from Schneider Electric provides robust and configurable protection for low‑voltage electrical distribution networks. These circuit breakers protect cables and equipment from overloads, short circuits, and faults, combining adjustable trip characteristics and a modular design that suits a wide variety of applications across industrial plants, commercial buildings, and infrastructure.
Featuring a compact footprint with ratings from approximately 16 A to 630 A, the Compact NSX series offers multiple breaking capacities (e.g., 25 kA up to 200 kA at 415 V AC) and 1 to 4 pole options, enabling scalability and design flexibility. The devices can be equipped with different trip units (thermal‑magnetic TMD for basic protection, and electronic MicroLogic trip units for advanced protection and metering features). Accessories such as auxiliary contacts, shunt releases, and communication modules further extend functionality.
Compact NSX MCCBs support fixed, withdrawable, or plug‑in installations, accommodate a range of auxiliaries, and comply with international standards (IEC/EN 60947‑2, UL, etc.). Their ergonomic design simplifies wiring and panel integration, while optional earth‑leakage protection (MicroLogic Vigi) enhances safety in sensitive applications.
📊 Specifications Table (Typical Values)
| Specification | Details |
|---|---|
| Product Series | Compact NSX MCCB (Schneider Electric) |
| Product Type | Molded Case Circuit Breaker (MCCB) |
| Rated Current Range | ~16 A to 630 A |
| Number of Poles | 1P / 2P / 3P / 4P |
| Rated Operational Voltage (Ue) | Up to 690 V AC (typical) |
| Rated Insulation Voltage (Ui) | 500 V or 800 V (depends on model) |
| Rated Impulse Withstand Voltage (Uimp) | 8 kV |
| Breaking Capacities (Icu / Ics) | Multiple options: 25, 36, 50, 70, 100, 150, 200 kA at 415 V (variation by frame and trip unit) |
| Trip Unit Options | Thermal‑Magnetic (TMD) / Electronic (MicroLogic) |
| Protection Functions | Overload, short‑circuit, optional earth leakage (Vigi) |
| Mounting Types | Fixed, Withdrawable, Plug‑in |
| Standards / Approvals | IEC/EN 60947‑2, UL 508, CCC, EAC (varies) |
| Installation Position | Any position (switchboard or wall) |
| Accessories | Auxiliaries, coils, handles, interlocks, remote displays |
🔍 Key Features
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Wide current range (16–630 A) suitable for small to medium power distribution.
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High breaking capacities up to 200 kA at 415 V AC (depending on version).
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Modular trip units (from thermal‑magnetic to advanced electronic units).
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Flexible installation profiles (fixed, withdrawable, plug‑in).
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Optional earth leakage protection and accessories to expand functionality.
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Support for communication and panel integration (e.g., Modbus, remote status).
🧰 Typical Applications
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Main and feeder protection in electrical distribution boards.
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Industrial automation systems and machinery panels.
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Commercial building power distribution.
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Data centre and infrastructure protection systems.
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