The MCT45-21(40) - A2-020056GA110S2 Current Transformer (CT) is a compact, high-precision electrical device engineered for accurate current measurement and dependable protection in modern power distribution systems. Designed with advanced magnetic core technology and high-quality insulation materials, this CT ensures consistent performance, safety, and long service life across industrial and commercial applications.
As part of the reliable MCT45 series, this model is specifically developed for panel mounting and cable-based installations, featuring a 21 mm window size. Its compact design makes it ideal for use in switchgear panels, control panels, and distribution boards where space optimization is critical.
The A2-020056GA110S2 variant delivers high accuracy with minimal phase displacement, ensuring precise current measurement for energy monitoring, billing, and protection systems. It converts high primary current into a standardized secondary output (typically 5A or 1A), making it compatible with various electrical instruments such as energy meters, ammeters, and protection relays.
Constructed using a high permeability silicon steel core, this current transformer minimizes energy losses while maintaining stable performance under varying load conditions. The outer housing is made from flame-retardant thermoplastic, offering strong resistance to heat, dust, and mechanical stress, ensuring durability in demanding environments.
Designed in accordance with IS / IEC 61869-2 standards, this CT guarantees safety, accuracy, and long-term reliability. It is widely used by panel manufacturers, OEMs, and electrical professionals in power distribution, automation systems, and energy management applications.
Model Number: MCT45-21(40) - A2-020056GA110S2
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 for 1 second
Dynamic Current (Idyn): 2.5 × Ith
Core Material: High-grade silicon steel
Mounting Type: Panel / Cable Mount
Window Size: 21 mm
Operating Temperature Range: -10°C to +55°C
Storage Temperature Range: -20°C to +70°C
Housing Material: Flame-retardant thermoplastic
Standards Compliance: IS / IEC 61869-2
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