The MCT45-21(40) - A2-015056GA110S2 Current Transformer (CT) is a compact and high-precision device engineered for accurate current measurement and reliable protection in modern electrical distribution systems. Designed with advanced magnetic core technology and premium insulation materials, this CT ensures consistent performance, high reliability, and long operational life in industrial and commercial environments.
As part of the well-established MCT45 series, this model is specifically built for panel mounting and cable-based applications, featuring a 21 mm window size. Its compact and space-efficient design makes it ideal for installations in switchgear panels, distribution boards, and control systems where space optimization is essential.
The A2-015056GA110S2 variant is designed to deliver high accuracy with minimal phase displacement, ensuring precise readings for energy metering, monitoring, and protection systems. It effectively converts high primary current into a standardized secondary output (typically 5A or 1A), making it compatible with a wide range of electrical instruments including energy meters, ammeters, and protection relays.
Manufactured using a high permeability silicon steel core, the CT ensures low energy losses and stable operation across varying load conditions. The outer enclosure is made from flame-retardant thermoplastic, providing enhanced protection against heat, dust, and mechanical stress, making it suitable for harsh operating environments.
Compliant with IS / IEC 61869-2 standards, this current transformer guarantees safety, accuracy, and dependable performance over an extended service life. It is widely used by panel manufacturers, OEMs, and electrical engineers in power distribution and automation systems.
Model Number: MCT45-21(40) - A2-015056GA110S2
Product Type: Current Transformer (CT)
Rated Primary Current: 150A
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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