Schneider AEG 557VIC12620

The Schneider AEG 557VIC12620 is a modular current transformer (CT) engineered for medium and low-voltage distribution systems. Boasting a compact design, it delivers high-precision current measurement and protection capabilities, and is widely integrated into switchgear cabinets, substations, and industrial automation systems.

Key Specifications

• Secondary Rated Current: 5 A
• Primary Rated Current Range: 0.5 A – 2500 A (optional)
• Secondary Rated Voltage: 5 V (50 Hz)
• Accuracy Class: 0.5 % (Class 0.5)
• Frequency Range: 45 Hz – 65 Hz
• Insulation Class: Class B (withstand voltage: 5 kV)
• Operating Temperature: -15 ℃ – +40 ℃ (average temperature ≤ 35 ℃)

Product Features

1. Five Protection FunctionsShort-circuit protection, overload protection, misoperation prevention, moisture resistance, and dust resistance ensure maximum operational safety.
2. Compact StructureSmall footprint enables easy installation in space-constrained environments.
3. Extended Service LifeCore components (contactors) support up to 2.5 million electrical operations and allow high-frequency cycling (600 operations/hour).
4. High-Voltage Current-Limiting FusesRapidly interrupt short-circuit currents to minimize impact on system and equipment integrity.
5. Flexible Modular IntegrationDirectly compatible with Schneider AEG VCB cabinets, offering multiple wiring configurations: top-in top-out, bottom-in bottom-out, top-in bottom-out, and bottom-in top-out.
6. Technical and Economic EfficiencyReduces feeder cross-sectional requirements and cuts material costs for system design.

Structure and Components

• Primary Coil: Handles high current loads and is constructed with high-strength insulating materials.
• Secondary Winding: Provides standard 5 A output, wound with low-impedance copper wire for stable performance.
• High-Voltage Current-Limiting Fuse: Installed at the primary side inlet, featuring fast-break functionality.
• Housing and Mounting Bracket: Metal or plastic enclosure with pre-drilled bolt holes for secure fixation inside switchgear cabinets.
• Terminal Blocks: Dedicated terminals for primary and secondary sides ensure reliable wiring connections.

Typical Applications

• Current measurement and protection in switchgear cabinets and low-voltage distribution boards
• Secondary circuit monitoring in substations
• Power metering and load monitoring in industrial automation systems
• Integration with Energy Management Systems (EMS) and Distribution Management Systems (DMS) platforms