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Schneider Electric ComPacT NSX Molded Case Circuit Breaker
Model: LV426140
4-hour response · Pricing in SAR · Delivery across all KSA regions
LV426140 — Schneider Electric ComPacT NSX Molded Case Circuit Breaker
The Schneider Electric ComPacT NSX is a molded case circuit breaker (MCCB) covering 16 A to 630 A in a compact footprint, designed for sub-main distribution protection in commercial, industrial, and infrastructure electrical systems on supply voltages up to 690 V AC and 250 V DC. The NSX range is one of the most compact MCCBs in its current class — the 630 A NSX630 occupies less panel space than competing products rated at 400 A — enabling significant panel size reduction in distribution switchboards and motor control centres. The range offers thermal-magnetic (TM-D) trip units for standard applications and advanced Micrologic trip units for applications requiring precision protection, energy metering, and communication, creating a single frame family that scales from simple branch circuit protection to sophisticated selective coordination schemes.
The Micrologic trip unit options (2, 5, 6, 7) provide progressively enhanced functions: Micrologic 2 for standard LSIG protection, Micrologic 5 for energy metering with Modbus communication, Micrologic 6 adding differential earth fault protection, and Micrologic 7 adding power quality measurement. Selective coordination with downstream Acti9 MCBs is achieved with a 10 ms minimum trip time, ensuring that a fault downstream trips the local MCB rather than the upstream NSX MCCB — maintaining supply continuity to all healthy circuits. The ComPacT NSX is also available in a draw-out (withdrawable) version with service position, enabling the MCCB to be racked out and replaced or serviced without de-energising the busbar.
In Saudi Arabia, the ComPacT NSX KSA is the standard MCCB for sub-main distribution in commercial buildings, industrial plants, and infrastructure projects across the Kingdom. SEC-approved switchboard manufacturers in Riyadh, Jeddah, and Dammam specify NSX as the distribution MCCB in IEC 61439-compliant LV switchboards for government, commercial, and industrial projects. SABIC and ARAMCO plant electrical contractors use NSX MCCBs in motor control centres and process plant distribution boards. The Red Sea Project and NEOM's electrical infrastructure use NSX as the sub-main protection standard across all development phases.
Razz Middle East stocks ComPacT NSX in ratings from 100 A to 630 A with both TM-D and Micrologic trip units for immediate delivery, with Micrologic communication module configuration support for energy monitoring applications.
Technical Specifications
Full specifications for the LV426140
- Current Range
- 16–630 A
- Voltage
- Up to 690 V AC / 250 V DC
- Trip Units
- TM-D (thermal-magnetic) / Micrologic 2/5/6/7
- Selective Coordination
- 10 ms with downstream Acti9
- Versions
- Fixed / Plug-in / Draw-out
- Communication
- Modbus RTU/TCP (Micrologic 5+)
- Arc Flash
- Available via Micrologic
- Standard
- IEC 60947-2
Key Features & Benefits
- Compact footprint — the 630 A NSX630 occupies less space than many competing 400 A MCCBs — enabling significant distribution board size reduction and cost saving in LV switchboard assemblies.
- Micrologic trip unit progression from basic LSIG to energy metering to power quality measurement allows the same NSX frame to serve simple protection or advanced energy management requirements without frame change.
- Selective coordination with downstream Acti9 MCBs at 10 ms trip time ensures fault discrimination, maintaining supply to all healthy circuits when a fault occurs on one branch without tripping the upstream NSX.
- Draw-out (withdrawable) version with racking mechanism enables MCCB replacement and maintenance in the service position without de-energising the main busbar, reducing planned maintenance downtime.
- Modbus RTU and TCP communication via Micrologic 5 and higher trip units provides energy consumption, demand, and fault history data to building energy management and SCADA systems.
- Differential earth fault protection in Micrologic 6 detects low-level earth faults not detected by conventional LSIG protection, providing fire prevention-level protection on large cable circuits in commercial buildings.
- IEC 60947-2 short-circuit performance with current limitation on magnetic trip reduces energy let-through and peak fault force on downstream wiring, protecting cables and busbars from the mechanical effects of high fault current.
Industrial Applications in Saudi Arabia
- Sub-main distribution protection in IEC 61439-compliant LV switchboards assembled by SEC-approved panel builders for commercial tower, government building, and infrastructure projects across Saudi Arabia.
- Motor feeder circuit breakers in ARAMCO and SABIC motor control centres, where NSX with Micrologic trip unit provides motor overload and short-circuit protection with Modbus data to the plant DCS.
- Main incomer and sub-main breakers in NEOM smart city LV distribution panels, where Micrologic 5 energy metering feeds data to EcoStruxure for real-time energy consumption monitoring across the smart city grid.
- Industrial distribution panel branch circuit protection at MODON industrial estate tenant factories, where draw-out capability enables MCCB replacement during production without de-energising the main distribution busbar.
- Red Sea Project resort electrical infrastructure sub-main distribution, where ComPacT NSX's compact footprint reduces distribution switchboard size in the constrained plant room layouts of luxury resort architecture.
- Healthcare facility main distribution MCCBs in Ministry of Health hospital projects, where Micrologic earth fault protection and selective coordination satisfy hospital electrical installation safety standards.
- Data centre UPS bypass and distribution switchboard MCCBs in Riyadh and Jeddah hyperscale facilities, where draw-out capability enables live maintenance without data centre power interruption.
Industrial Supplier in Saudi Arabia
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Frequently Asked Questions — LV426140
Common questions from buyers in Saudi Arabia and the GCC