The Ring Type CT – B1-015055GA110S2 Current Transformer is a compact, high-accuracy device engineered for precise current measurement and dependable protection in low to medium current electrical systems. Designed using advanced magnetic core technology and premium-grade insulation materials, this current transformer delivers stable performance, minimal losses, and long operational life across industrial and commercial applications.
This model belongs to the B1 series, known for its compact size and efficient performance in space-constrained installations. It features a 15 mm inner diameter, making it ideal for cable-based installations and compact electrical panels. The ring-type (window type) design enables quick and easy installation without disconnecting the primary conductor, saving both time and installation effort.
The B1-015055GA110S2 is designed to convert primary current into a standardized secondary output (5A or 1A), ensuring compatibility with energy meters, ammeters, and protection relays. It provides high accuracy with low phase displacement, making it suitable for precise energy monitoring, billing, and protection systems.
Built with a high permeability silicon steel core, the transformer ensures excellent linearity and reduced hysteresis losses. The outer casing is made from flame-retardant thermoplastic, offering strong resistance to heat, dust, and mechanical stress, ensuring durability in demanding environments.
Compliant with IS / IEC 61869-2 standards, this CT ensures safety, reliability, and consistent long-term performance. It is widely used by panel manufacturers, OEMs, and electrical professionals in distribution systems and automation panels.
Model Number: B1-015055GA110S2
Product Type: Ring Type Current Transformer
Rated Primary Current: 15A
Secondary Current: 5A / 1A
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 (1 sec)
Dynamic Current (Idyn): 2.5 × Ith
Core Material: High permeability silicon steel
Mounting Type: Cable (Ring Type)
Inner Diameter: 15 mm
Operating Temperature: -10°C to +55°C
Storage Temperature: -20°C to +70°C
Housing: Flame-retardant thermoplastic
Compliance: IS / IEC 61869-2
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