Gossen Metrawatt SC40-C Split-Core Current Transformer 400/5 A, Class 1, 5 VA (U528C)

The SC40-C from Gossen Metrawatt stands out with its split-core design, allowing installation without interrupting the primary conductor. This is a practical advantage in retrofit or maintenance scenarios where downtime must be minimized. Rated for a primary current of 400 A and a secondary current of 5 A, it converts high currents into a standardized low-level signal for measurement and protection devices.

Highlights

• Split-core construction for easy, non-invasive installation
• Transformation ratio 400/5 A with accuracy class 1
• Rated burden 5 VA and overcurrent limit factor FS 5
• Accepts busbars up to 40 x 40 mm or cables up to Ø 40 mm
• Self-extinguishing polycarbonate housing for durability

In daily use

Mount the SC40-C on a busbar, cable, or DIN rail with an optional adapter. Its 0.72 kV maximum operating voltage and 50/60 Hz frequency make it suitable for low-voltage distribution systems. The IP20 protection class indicates use in dry, enclosed environments.

Full specifications

• Primary current: 400 A
• Secondary current: 5 A
• Accuracy class: 1
• Rated power (burden): 5 VA
• Overcurrent limit factor: FS 5
• Max. operating voltage: 0.72 kV (720 V)
• Frequency: 50/60 Hz
• Transformer type: Split-core
• Primary conductor opening: 40 x 40 mm (busbar) / Ø 40 mm (cable)
• Insulation voltage: 3 kV (test voltage)
• Housing material: Self-extinguishing polycarbonate
• Mounting type: Cable tie, busbar, DIN rail (with optional adapter)
• Operating temperature range: -25°C to +50°C
• Protection class (IP): IP20
• Standards compliance: IEC 61869-2

Final note

For reliable current measurement in low-voltage installations, the SC40-C offers a balance of accuracy and installation flexibility.