The MCT50-21(30) - A3-020056GA110S2 Current Transformer (CT) is a compact, high-precision electrical device designed for accurate current measurement and dependable protection in modern electrical distribution systems. Engineered using advanced magnetic core technology and high-quality insulation materials, this CT ensures stable performance, low energy losses, and long operational life across industrial and commercial applications.
Part of the trusted MCT50 series, this model is specifically developed for panel mounting and cable-based installations, featuring a 21 mm window size. Its compact and space-saving design makes it ideal for installation in switchgear panels, control panels, and distribution boards where efficient space utilization is critical.
The A3-020056GA110S2 variant is optimized to provide high measurement accuracy with minimal phase displacement, ensuring precise current readings for energy monitoring, billing, and protection systems. It converts primary current into a standardized secondary output (typically 5A or 1A), ensuring compatibility with energy meters, ammeters, and protection relays.
Constructed using a high permeability silicon steel core, this current transformer ensures excellent linearity and reduced hysteresis losses across varying load conditions. The outer housing is made from flame-retardant thermoplastic, offering strong resistance against heat, dust, and mechanical stress, ensuring durability in demanding industrial environments.
Designed in compliance with IS / IEC 61869-2 standards, this CT guarantees safety, reliability, and consistent long-term performance. It is widely used by OEMs, panel builders, and electrical professionals in power distribution systems, industrial automation, and energy management applications.
Model Number: MCT50-21(30) - A3-020056GA110S2
Product Type: Current Transformer (CT)
Rated Primary Current: 200A
Secondary Current: 5A
Accuracy Class: Class 1.0 (Class 0.5 optional)
Rated Burden: 5 VA / 10 VA
Frequency: 50/60 Hz
System Voltage: Up to 0.72 kV
Insulation Class: Class E / B
Short-Time Thermal Current (Ith): 20 × In (1 sec)
Dynamic Current (Idyn): 2.5 × Ith
Core Material: High permeability silicon steel
Mounting Type: Panel / Cable Mount
Window Size: 21 mm
Operating Temperature: -10°C to +55°C
Storage Temperature: -20°C to +70°C
Housing Material: Flame-retardant thermoplastic
Standards Compliance: IS / IEC 61869-2
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