The MCT45-21(40) - A2-025056GA110S2 Current Transformer (CT) is a compact, high-precision electrical device designed for accurate current measurement and reliable protection in modern power distribution systems. Engineered using advanced magnetic core technology and premium insulation materials, this CT ensures consistent performance, high accuracy, and long operational life across industrial and commercial applications.
Belonging to the trusted MCT45 series, this model is specifically developed for panel mounting and cable applications, featuring a 21 mm window size. Its compact and space-efficient design makes it ideal for installations in switchgear panels, control panels, and distribution boards where space is limited and performance is critical.
The A2-025056GA110S2 variant is designed to provide high measurement accuracy with minimal phase displacement, ensuring precise current readings for energy monitoring, billing, 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 measuring instruments such as energy meters, ammeters, and protection relays.
Constructed using a high permeability silicon steel core, the CT minimizes energy losses and ensures excellent linearity across varying load conditions. The outer enclosure is made of flame-retardant thermoplastic, offering superior resistance to heat, dust, and mechanical stress, ensuring durability in demanding environments.
Designed in compliance with IS / IEC 61869-2 standards, this current transformer guarantees safety, reliability, and long-term performance. It is widely used by electrical engineers, panel manufacturers, and OEMs in power distribution, automation systems, and energy management applications.
Model Number: MCT45-21(40) - A2-025056GA110S2
Product Type: Current Transformer (CT)
Rated Primary Current: 250A
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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