The Ring Type CT – B7-160056MA110S2 Current Transformer is a high-precision, industrial-grade device designed for accurate current measurement and dependable protection in modern electrical power systems. Manufactured using advanced magnetic core technology and premium insulation materials, this current transformer delivers consistent performance, long service life, and superior reliability even under demanding operating conditions.
Belonging to the durable and widely trusted B7 series, this model is specifically engineered for heavy-duty busbar and large cable applications. With a 160 mm inner diameter, it is ideal for high-capacity installations in electrical panels, switchgear assemblies, and power distribution systems. Its ring-type (window type) construction allows for quick installation without disconnecting the primary conductor, significantly reducing installation time and operational downtime.
The B7-160056MA110S2 efficiently converts high primary current into a standardized secondary current output (typically 5A or 1A), ensuring compatibility with energy meters, ammeters, and protection relays. Designed for high accuracy and minimal phase displacement, this CT ensures reliable measurements for energy monitoring, billing, and protection systems.
Constructed with a high permeability silicon steel core, the transformer minimizes energy losses while maintaining excellent linearity across varying load conditions. The outer housing is made from flame-retardant thermoplastic, providing enhanced protection against heat, dust, and mechanical stress, ensuring durability in harsh industrial environments.
Designed in compliance with IS / IEC 61869-2 standards, this current transformer meets global requirements for safety, accuracy, and performance. It is widely used by panel manufacturers, OEMs, and electrical engineers for efficient current monitoring in modern electrical infrastructure.
Model Number: B7-160056MA110S2
Product Type: Ring Type Current Transformer
Rated Primary Current: 160A (typical, configurable)
Secondary Current: 5A / 1A
Accuracy Class: Class 1.0 / Class 0.5
Rated Burden: 10 VA / 15 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: Busbar / Cable (Ring Type)
Inner Diameter (ID): 160 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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