AC LCD Adjustable Current MCCB

Intelligent Features & Digital LCD Interface

Real-Time Visual Monitoring: The built-in illuminated LCD screen provides clear, live readouts of 3-phase line currents, operational voltages, frequency, and real-time load percentages without requiring external panel meters.

Multi-Stage Protection & Field Adjustment: Digital push-buttons or rotary selectors allow technicians to precisely program protection thresholds, including:

Overload Long-Time Delay (Ir): Adjustable pickup current preventing nuisance trips during normal motor startup.

Short-Circuit Short-Time Delay (Isd) & Instantaneous (Ii): Precise timing and current pickups for selective coordination.

Comprehensive Voltage & Phase Protections: Built-in safeguards against over-voltage, under-voltage, voltage unbalance, phase loss (phase failure), and reverse phase sequence.

Fault Memory & Event Logging: The LCD trip unit stores recent trip history, fault types, and peak fault current records, significantly reducing troubleshooting downtime during field maintenance.

Communication Standards & Testing Compliance

NUOMAK AC LCD Adjustable Current MCCBs are produced under an ISO9001 quality system and fully comply with IEC/EN 60947-2 standards. Select models feature RS485 communication interfaces supporting standard Modbus-RTU protocols, allowing seamless integration into SCADA, Building Management Systems (BMS), and remote IoT energy management platforms. Every unit undergoes 100% routine factory testing—including dielectric withstand, LCD parameter accuracy verification, and electronic trip curve calibration.

Target B2B Applications

Smart Grid & Commercial Power Distribution: Centralized monitoring in commercial high-rises, data centers, and hospital sub-distribution boards.

Industrial Automation & Motor Control Centers (MCC): Real-time current/voltage protection for heavy motors, air compressors, and manufacturing lines vulnerable to phase loss or voltage fluctuations.

Renewable Energy & Microgrid Switchboards: Monitoring solar inverter outputs, battery storage feedlines, and hybrid generator systems.

What electrical parameters and trip functions can be monitored on the LCD screen?

The LCD screen displays real-time 3-phase line current (IA,IB,IC), system phase/line voltages (U), operational frequency, and active load percentage. It also displays real-time alarm status and trip indicators for overload, short-circuit, over-voltage, under-voltage, phase loss, and ground fault events, complete with fault history logging.

Do NUOMAK LCD Adjustable MCCBs support remote communication for BMS/SCADA systems?

Yes. NUOMAK offer smart LCD MCCB models equipped with RS485 communication modules supporting the Modbus-RTU protocol. This enables remote reading of electrical parameters, remote setting of trip thresholds, and real-time alarm notifications to central Building Management Systems (BMS) or IoT energy management platforms.

What is the MOQ and lead time for wholesale orders of LCD Adjustable MCCBs?

For standard catalog models, our Minimum Order Quantity (MOQ) starts at 10 to 30 units per frame size. For custom OEM orders (including custom brand labeling, private casing colors, or specialized firmware settings), the MOQ is typically 100 units. Standard production lead times are 15 to 25 business days, backed by full ISO9001 quality documentation and CE test reports.