Schneider Electric Compact NSX100F 100A MCCB

Overview

The Schneider Electric NSX100F (Compact NSX100F) is a 3-pole molded case circuit breaker (MCCB) rated at 100A, built on Schneider Electric’s ComPact NSX <630A platform — one of the most widely specified low-voltage protection ranges in industrial and commercial electrical distribution worldwide. Fitted with a TMD thermal-magnetic trip unit, the NSX100F combines an adjustable thermal overload element with a fixed instantaneous magnetic trip, delivering dependable short-circuit and overload protection for feeder and distribution circuits up to 690V AC. Its compact frame, rated breaking capacity of 36kA at 415VAC, and IEC 60947-2 compliance make it a standard choice for main and sub-distribution boards, motor control centers, and switchgear panels where space and reliability both matter.

As the official authorized partner and exclusive regional representative for Schneider Electric, Seven Star LLC proudly supplies the Schneider Electric Compact NSX100F to facility engineers, panel builders, and EPC contractors across the Sultanate of Oman and the wider GCC. Every unit shipped through our instrumentation and low-voltage division carries full manufacturer traceability, genuine warranty coverage, and access to local technical support — critical assurances for buyers in Muscat, Sohar, and Salalah who need protection devices that meet international safety codes without the lead times of importing directly from Europe.

Operating Principle of the Schneider Electric NSX100F

The Schneider Electric Compact NSX100F protects circuits through two complementary trip mechanisms housed in its TMD unit. The thermal element uses a bimetallic strip that heats and deflects in proportion to sustained current draw, tripping the breaker when current remains above the adjustable overload threshold for a duration inversely proportional to the overcurrent — protecting cables and downstream equipment from slow-building thermal stress caused by overloaded motors, undersized conductors, or degraded connections. The magnetic element operates independently and near-instantaneously, using an electromagnetic coil that responds to the rapid current rise of a genuine short circuit, tripping the mechanism within milliseconds to limit fault energy and protect both the installation and personnel.

Because the TMD trip unit is a fixed, factory-calibrated instantaneous magnetic setting paired with an adjustable thermal element, the NSX100F offers predictable, tamper-resistant protection that is straightforward to coordinate with upstream and downstream devices in a selective protection study. This dual-mechanism design means the breaker requires no external power supply or electronic module to operate correctly — it is a self-contained, purely electromechanical device, which translates into high reliability, minimal maintenance, and dependable operation even in the high-ambient-temperature, dusty conditions typical of industrial sites across Oman.

Engineering Design of the Schneider Electric Compact NSX100F

The Schneider Electric Compact NSX100F is housed in a compact molded case measuring approximately 105mm x 161mm x 86mm for the 3-pole fixed version, allowing dense panel layouts without sacrificing the mechanical strength of the enclosure. The case is manufactured from high-impact, flame-retardant insulating material rated for the arcing and thermal stresses associated with fault interruption, and the breaker is available in fixed, plug-in, and withdrawable versions to suit different panel architectures and maintenance philosophies. Front-face indication shows the breaker status (ON/OFF/tripped) clearly, and the toggle handle provides positive trip-free operation, meaning the contacts cannot be held closed against a persistent fault.

Termination is via front-connected or rear-connected busbar and cable lugs depending on the chosen accessory kit, and the platform accepts a common range of accessories — auxiliary contacts, fault-signaling contacts, shunt trips, and undervoltage releases — shared across the wider ComPact NSX family, simplifying spares holding for panel builders and maintenance teams. The breaker is rated for an insulation voltage of 800V AC and an operational voltage of 690V AC at 50/60Hz, with a rated impulse withstand voltage of 8kV, giving installers margin against transient overvoltage events common on regional low-voltage networks.

Key Features

The Schneider Electric NSX100F delivers a combination of protection performance for buyers searching for a Schneider Electric NSX100F and physical robustness that panel designers rely on across multiple industries. Its principal characteristics include:

• Rated current of 100A across 3 poles, suited to distribution and feeder circuit protection in low-voltage switchboards.
• TMD thermal-magnetic trip unit with adjustable thermal overload setting and fixed instantaneous magnetic trip for reliable short-circuit clearing.
• Breaking capacity (Icu) of 36kA rms at 415VAC 50/60Hz, with additional ratings up to 85kA at 240VAC depending on the applicable standard.
• Rated insulation voltage of 800V AC and operational voltage of 690V AC, giving broad compatibility with regional distribution voltages.
• Compact molded case dimensions of approximately 105 x 161 x 86mm for efficient panel space utilization.
• Trip-free mechanism ensures the breaker cannot be held closed against a persistent overload or short-circuit condition.
• Compliant with IEC 60947-2 and carrying CCC, EAC, and marine classification approvals for versatile project specification.
• Compatible with the full ComPact NSX accessory range, including auxiliary and fault-signaling contacts, shunt trips, and undervoltage releases.

Industrial Applications

The Schneider Electric Compact NSX100F is specified wherever a facility needs dependable, code-compliant overcurrent protection at the 100A distribution level: main low-voltage switchboards, motor control centers, sub-distribution panels, and dedicated feeder circuits for pumps, compressors, HVAC equipment, and lighting distribution. In Oman’s district cooling plants, commercial tower HVAC risers, and hotel and hospitality complexes along the Muscat coastline, the NSX100F is routinely selected for its balance of breaking capacity, panel footprint, and proven field reliability. It is equally common in RO desalination facilities, light industrial workshops, and warehouse distribution boards where a compact, trip-free MCCB is required to protect both cabling and connected equipment without oversized panel real estate.

As the officially authorized partner for Schneider Electric, Seven Star LLC distributes the NSX100F to panel builders and contractors serving the Sohar and Salalah economic zones, where industrial expansion continues to drive demand for certified low-voltage protection devices with fast local availability. Our regional stock holding and technical support mean that facility managers and EPC contractors across Oman and the GCC can specify the NSX100F with confidence that replacement units, accessories, and datasheets are available without the delays typical of direct European imports, keeping plant shutdowns and commissioning schedules on track.

Technical Specifications

The table below summarizes the key technical parameters of the Schneider Electric NSX100F for specification and procurement purposes.

Call To Action

Seven Star LLC supports formal RFQ submissions, technical datasheet requests, and regional warehouse stock checks for the Schneider Electric NSX100F across Oman and the GCC. As the authorized partner for Schneider Electric in Oman and the GCC, our instrumentation and low-voltage distribution division can confirm lead times, accessory compatibility, and selective coordination guidance for your project. Contact Seven Star LLC today to request a formal quotation, download the full technical datasheet, or speak with our engineering team about deploying the NSX100F in your next panel build or retrofit in Muscat, Sohar, Salalah, or anywhere across the Sultanate of Oman.