The Ring Type CT – B1-012056GA110S2 Current Transformer is a compact, high-precision electrical device designed for accurate current measurement and reliable protection in low to medium current applications. Manufactured using advanced magnetic core technology and premium insulation materials, this current transformer ensures consistent performance, high accuracy, and long service life across industrial and commercial environments.
As part of the compact and efficient B1 series, this model is specifically developed for cable-based installations and compact electrical panels, featuring a 12 mm inner diameter. Its ring-type (window type) construction enables quick and easy installation without disconnecting the primary conductor, making it ideal for fast integration in modern electrical systems.
The B1-012056GA110S2 effectively converts primary current into a standardized secondary output (typically 5A or 1A), ensuring compatibility with energy meters, ammeters, and protection relays. Designed to provide high accuracy with minimal phase displacement, this CT ensures reliable performance for energy monitoring, billing, and protection systems.
Constructed with a high permeability silicon steel core, the transformer minimizes energy losses and maintains excellent linearity across varying load conditions. The outer enclosure is made from flame-retardant thermoplastic, offering superior resistance to heat, dust, and mechanical stress, ensuring durability in compact and demanding 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 panel manufacturers, OEMs, and electrical engineers in control panels, distribution boards, and automation systems where space-saving and precision are critical.
Model Number: B1-012056GA110S2
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: 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: Cable (Ring Type)
Inner Diameter (ID): 12 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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