The Ring Type CT – B2-012555AA110S2 Current Transformer is a compact, high-precision electrical device designed for accurate current measurement and reliable protection in low to medium current applications. Engineered with advanced magnetic core technology and high-quality insulation materials, this current transformer ensures stable performance, excellent accuracy, and long service life in both industrial and commercial environments.
Part of the efficient and space-saving B2 series, this model is specifically developed for cable-based installations and compact electrical panels, making it an ideal choice for modern electrical systems where space optimization is essential. It features a 12 mm inner diameter, allowing easy installation around cables without disconnecting the primary conductor, thereby reducing installation time and effort.
The B2-012555AA110S2 converts primary current into a standardized secondary output (typically 5A or 1A), ensuring seamless compatibility with energy meters, ammeters, and protection relays. Designed for high accuracy with minimal phase displacement, this CT delivers reliable readings for energy monitoring, billing, and protection systems.
Constructed using a high permeability silicon steel core, this current transformer minimizes energy losses while maintaining excellent linearity 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 operating 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 manufacturers, and electrical professionals in control panels, distribution boards, and automation systems where compact size and precision are critical.
Model Number: B2-012555AA110S2
Product Type: Ring Type Current Transformer
Rated Primary Current: 12A (typical, configurable)
Secondary Current: 5A / 1A
Accuracy Class: Class 1.0 / Class 0.5
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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