FICO RLC-80 80×50 mm High-Current Transformer (600 A – 2000 A / 5 A Secondary) – Precision RLC Series CT

The FICO RLC-80 is a high-performance current transformer (CT) from the trusted RLC Series — engineered for accurate, reliable current measurement and monitoring in industrial, commercial, and energy-metering applications. With a robust 80 × 50 mm window size and broad primary current range, this CT is ideal for heavy-duty busbars, large cables, or power distribution systems.

Key Features & Benefits

• Wide primary current range (600 A to 2000 A) — The RLC-80 supports primary currents from 600 A up to 2000 A, stepped down to a standard 5 A secondary output. This makes it highly versatile for a range of load capacities and future-proof for system expansion.
• Large 80×50 mm window size — The generously sized aperture easily accommodates thick busbars or multiple cables, simplifying installation in panels, distribution boards, or industrial electrical systems. This ensures compatibility with common busbar sizes specified under the RLC-80 rectangular-window series.
• Reliable 5 A secondary output — Provides stable, standardized 5 A output current for downstream metering, protection relays or energy monitoring devices, ensuring compatibility with most current-monitoring and metering setups.
• Accurate & stable performance — Manufactured under the well-known RLC Series standard from FICO, the CT is built to meet international standards (EN/IEC 61869-1 / 61869-2), delivering consistent performance for measurement, protection, and energy-metering applications.
• Durable construction & safety standards — Designed as a dry transformer with air insulation, insulating housing made of flame-retardant polycarbonate, and rated for use up to 0.72-kV (AC). Also withstands thermal and electrical stress, with continuous thermal current rating equal to primary current, insulation resistance and dielectric strength tested to 3.0 kV/1 mA / 1 min.
• Versatile applications — Suitable for current measurement, power and energy monitoring, relay protection, load profiling and distribution panel monitoring. Works well for electric motors, lighting, HVAC/compressor systems, HVAC, industrial machinery, and general building power distribution.
• Compact, easy installation — The 80 × 50 mm window and screw-tightened secondary terminals (M4) simplify retrofit installation even in cramped panel layouts.

Technical Specifications (Summary)

Why Choose the FICO RLC-80 CT?

If you’re looking for a high-current CT that combines versatility, reliability, and accuracy, the FICO RLC-80 is an ideal choice. Its broad current range and large window make it suitable for modern electrical installations — especially those with large busbars, heavy loads, or future expansion in mind. The standardized 5 A secondary output ensures compatibility with most energy meters, protection relays, and monitoring systems. Whether you’re setting up a new power distribution board or upgrading an existing installation, this CT delivers stable measurement, strong safety credentials, and low-maintenance operation.

Typical Use Cases

• Power distribution panels in commercial buildings, factories, data centers
• Monitoring and protection of heavy-load circuits (motors, HVAC, compressors)
• Energy metering and load-profiling for industrial or commercial power usage
• Retrofit projects on busbars or large conductors where conventional CTs cannot fit
• Integration with energy meters, power analyzers, relay protection systems