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AEG MEF002 Industrial Molded Case Circuit Breaker (MCCB)
- Product Introduction: AEG MEF002 is a high-performance molded case circuit breaker engineered for overcurrent and short-circuit protection of low-voltage industrial power distribution systems, motor control circuits, and automation equipment. The breaker features a thermomagnetic trip unit, adjustable current settings, and a rugged molded case construction, delivering reliable overcurrent protection for electrical systems in industrial, commercial, and municipal applications. It supports both fixed and plug-in mounting configurations, with high interrupting capacity and compliance with global safety standards, making it suitable for use in power distribution panels, motor control centers (MCCs), and control cabinets. The MEF002 provides selective protection to minimize system downtime during electrical faults, with easy operation and maintenance, serving as a critical component for ensuring the safety and reliability of low-voltage electrical systems in harsh industrial environments.
- Technical Specifications:
- Pole Configuration: 3-pole, 4-pole available
- Rated Operational Voltage (Ue): 400 V AC (50/60 Hz), 690 V AC optional
- Rated Incoming Current (In): 16 A, 20 A, 25 A, 32 A, 40 A, 50 A, 63 A (adjustable)
- Rated Short-Circuit Interrupting Capacity (Icu): 25 kA @ 400 V AC, 15 kA @ 690 V AC
- Rated Service Short-Circuit Breaking Capacity (Ics): 100% Icu (symmetrical)
Detailed content
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- Trip Unit Type: Thermomagnetic (thermal overload for long-time protection, magnetic for instantaneous short-circuit protection)
- Trip Settings: Long-time delay (Ir: 0.7–1.0 In, adjustable), instantaneous magnetic trip (Ii: 5–10 In, adjustable)
- Operating Temperature: -25°C to +70°C, derating >60°C (1% per °C)
- Mounting Configuration: Fixed mount (flange), plug-in mount (draw-out), DIN rail mount optional
- Termination Type: Screw terminals, cable lug compatible (copper/aluminum)
- Mechanical Life: >10,000 operations (open/close)
- Electrical Life: >5,000 operations (at full load)
- Protection Class: IP20 (terminal cover), IP40 optional with protective housing
- Dimensions (3-pole, 63 A): 100 mm (W) × 180 mm (H) × 120 mm (D)
- Weight (3-pole, 63 A): 2.1 kg
- Compliance: IEC 60947-2, IEC 60898, CE, UL 489, CSA, RoHS
- Functional Features:
- Thermomagnetic trip unit provides dual protection: thermal overload protection for slow-burn overcurrents (e.g., motor startup, circuit overloads) and instantaneous magnetic protection for high-level short-circuits, ensuring comprehensive fault protection for electrical systems.
- Adjustable current settings (Ir, Ii) enable precise calibration of protection parameters to match specific load requirements, supporting selective protection and minimizing system downtime during electrical faults.
- High short-circuit interrupting capacity (25 kA @ 400 V AC) ensures reliable fault clearing in industrial power distribution systems with high short-circuit currents, preventing equipment damage and electrical fires.
- Rugged molded case construction (thermoset plastic) provides mechanical strength and electrical insulation, with resistance to impact, dust, and moisture in harsh industrial environments.
- Multiple mounting configurations (fixed, plug-in, DIN rail) enable flexible installation in power distribution panels, MCCs, and control cabinets, supporting both new installations and retrofits of existing electrical systems.
- Screw terminals compatible with copper and aluminum conductors eliminate the need for transition connectors, simplifying wiring and ensuring secure electrical connections in industrial power distribution systems.
- 100% Ics rating (service short-circuit breaking capacity) ensures the breaker can be reclosed after a short-circuit fault without replacement, reducing maintenance costs and system downtime.
- Wide operating temperature range (-25°C to +70°C) ensures reliable performance in extreme industrial environments, including cold storage facilities, high-temperature manufacturing plants, and outdoor power distribution systems.
- Visual status indicator (open/closed) provides instant visual feedback on the breaker’s operating status, enabling quick fault identification and troubleshooting during maintenance.
- Easy manual operation (rotary handle) allows for quick circuit isolation during maintenance and repair, with a lockable handle for lockout/tagout (LOTO) procedures in compliance with industrial safety standards.
- Compact design saves space in power distribution panels and MCCs, enabling high-density installation of multiple breakers for protection of multiple circuits in industrial control systems.
- Application Scenarios:
- Industrial power distribution for overcurrent protection of low-voltage (400 V AC) power panels, feeder circuits, and distribution boards in manufacturing plants, chemical facilities, and power generation stations.
- Motor control for protection of three-phase induction motors (pumps, fans, conveyors) in motor control centers (MCCs), with adjustable trip settings to match motor startup currents and prevent nuisance tripping.
- Automation equipment protection for PLC chassis, VFDs, and HMI panels in factory automation systems, with selective protection to isolate faulty circuits without shutting down the entire automation system.
- Commercial building power distribution for protection of lighting, HVAC, and electrical equipment in office buildings, shopping malls, and industrial facilities, with compliance with global safety standards.
- Water and wastewater treatment for protection of pump motors, blower systems, and control panel power supplies in treatment plants and lift stations, with rugged design for outdoor and humid environments.
- Mining and mineral processing for overcurrent protection of crusher motors, conveyor systems, and underground power distribution circuits, with wide temperature tolerance for harsh mine site conditions.
- Construction site power distribution for temporary power systems, protecting portable electrical equipment and construction machinery from overcurrents and short-circuits in outdoor construction environments.
- Data center power distribution for protection of low-voltage power circuits feeding server racks, cooling systems, and UPS equipment, with high interrupting capacity for reliable fault clearing in critical power systems.
