Moulded Case Circuit Breaker (MCCB)
Moulded Case Circuit Breakers (MCCBs): Robust Protection for High-Current Applications
At United Force Trading Company, a trusted Schneider Retail Partner, Moulded Case Circuit Breakers (MCCBs) are a cornerstone of our LV power-solutions portfolio. Engineered to shield electrical circuits from overloads, short-circuits and—on selected models—ground faults, MCCBs handle far higher current ratings and harsher service conditions than miniature circuit breakers (MCBs). They are therefore indispensable across industrial, commercial and infrastructure sites where reliability, scalability and precise protection are non-negotiable.
What is an MCCB?
An MCCB (Moulded Case Circuit Breaker) is an advanced protective device for medium- to high-current circuits. Encased in a moulded insulating shell, each unit offers:
Adjustable protection: long-time (Ir), short-time (Isd) and instantaneous (Ii) settings
High interrupting capacity: safely clears large fault currents
Thermal-magnetic or electronic trip units: accurate response to overloads and short-circuits
Optional ground-fault modules: early leakage-current detection
Isolation & switching capability: ensures safe maintenance and system reconfiguration
Types of Schneider MCCBs
Schneider classifies MCCBs by frame size and trip-unit technology rather than B/C/D curves. Key families include:
ComPacT NSXm (16 A – 160 A) – fixed or adjustable thermal-magnetic trip, breaking capacity up to 70 kA, ultra-compact footprint.
ComPacT NSX (25 A – 630 A) – thermal-magnetic or Micrologic electronic trip, breaking capacity up to 150 kA, built-in metering and communications.
ComPacT NS (630 A – 1600 A) – Micrologic electronic trip, breaking capacity up to 150 kA, extended protection settings for large feeders.
MasterPact MTZ (630 A – 2500 A) – digital Micrologic X trip unit, Bluetooth® connectivity, field-installable digital modules, Class 1 energy metering, breaking capacity up to 150 kA.
Applications of MCBBs
Industrial plants – motor feeders, generator outputs, heavy-machinery starters
Commercial complexes – main LV switchboards, elevators, HVAC, lighting risers
Renewable energy – solar combiner boxes, wind-turbine switchgear, battery-storage protection
Infrastructure & critical facilities – hospitals, airports, data centres, metro systems
Why Schneider MCCBs—Available from United Force Trading Company
Advanced Protection
Fine-tune Ir, Isd, Ii via front dials or Micrologic displays
Optional ground-fault modules trip on leakage before damage occurs
Smart Connectivity
Communication-ready (Modbus-RTU, Ethernet, Wi-Fi, Bluetooth) for seamless integration with EcoStruxure™ Power Monitoring Expert
Real-time data on energy, demand, event logs and breaker health enables predictive maintenance
High Performance & Compliance
Current range: 16 A – 2500 A across five frame sizes
Breaking capacity: up to 150 kA at 415 V
Standards: IEC / EN 60947-2, UL 489, CCC and more
Key Benefits of Choosing Schneider MCBs
Safety first – rapid fault clearing prevents fires, arc-flash incidents and equipment damage
Cost-effective – resettable design and remote diagnostics reduce downtime and maintenance costs
Flexibility – wide current range, 3- and 4-pole versions, plug-in or draw-out execution
Smart integration – seamless fit with Schneider Acti9 and Prisma panel systems
Why Partner with United Force Trading Company?
Schneider-certified solutions – genuine products with full manufacturer warranty
Expert guidance – help selecting the optimal MCCB for voltage, load current and prospective fault-level studies
Rapid availability – extensive local inventory for urgent schedules
End-to-end support – panel design assistance, installation guidance, troubleshooting and lifecycle upgrades
Let Schneider MCCBs—supplied and supported by United Force Trading Company—power your next project with reliability and intelligence.
At United Force Trading Company, we proudly serve as an authorized Schneider Retail Partner, offering trusted power and control solutions .
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