The Ring Type CT – B2-012556EA110S2 Current Transformer is a compact, high-precision device designed for accurate current measurement and dependable protection in low to medium current electrical systems. Built with advanced magnetic core technology and premium-grade insulation materials, this current transformer delivers consistent performance, high accuracy, and long operational life in both industrial and commercial environments.
Part of the efficient and compact B2 series, this model is specifically engineered for cable-based installations and compact panel designs, making it ideal for applications where space is limited and performance is critical. It features a 12 mm inner diameter, allowing easy installation around cables without the need to disconnect the primary conductor, thereby saving time and reducing installation complexity.
The B2-012556EA110S2 converts primary current into a standardized secondary output (typically 5A or 1A), ensuring seamless compatibility with energy meters, ammeters, digital panel meters, and protection relays. It is designed to deliver high accuracy with minimal phase displacement, ensuring reliable and precise readings for energy monitoring, billing, and protection applications.
Constructed using a high permeability silicon steel core, this CT minimizes hysteresis and eddy current losses while maintaining excellent linearity under varying load conditions. The outer housing is made from flame-retardant thermoplastic, offering superior resistance to heat, dust, and mechanical stress, ensuring durability in harsh industrial environments.
Designed in accordance with IS / IEC 61869-2 standards, this current transformer guarantees safety, reliability, and consistent long-term performance. It is widely used by OEMs, panel builders, and electrical engineers in control panels, distribution boards, and automation systems where compact design and precision are essential.
Model Number: B2-012556EA110S2
Product Type: Ring Type Current Transformer
Rated Primary Current: 125A (typical based on model coding)
Secondary Current: 5A / 1A
Accuracy Class: Class 1.0 (Class 0.5 optional)
Rated Burden: 2.5 VA / 5 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-grade silicon steel
Mounting Type: Cable (Ring Type)
Inner Diameter (ID): 12 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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