Janitza Split-Core Current Transformer Class 1 250/1A 28mm KU (1503352)

Unlike conventional solid-core transformers that demand cable disconnection, this Janitza split-core current transformer opens around existing conductors for fast, interruption-free installation. Its Class 1 accuracy and 250/1 A ratio deliver reliable measurement for energy management and power monitoring systems.

Highlights

• Split-core design for retrofit without cable disconnection
• Class 1 accuracy per IEC 61869-2
• Primary current 250 A, secondary 1 A
• 28 mm cable opening fits common conductors
• Self-extinguishing polycarbonate housing
• Wide operating temperature range -25°C to +50°C

In daily use

Mount the transformer around the conductor using the integrated cable tie or base mounting, then connect the secondary via screw terminals. The 1.25 VA burden supports standard metering inputs, while FS5 overcurrent factor ensures stable output under overload. With IP20 protection, it is intended for installation inside electrical enclosures.

Full specifications

• Product type: Split-core current transformer
• Manufacturer part number: 1503352
• Primary current: 250 A
• Secondary current: 1 A
• Accuracy class: Class 1
• Cable opening diameter: 28 mm
• Rated burden: 1.25 VA
• Overcurrent limit factor: FS5
• Frequency: 50/60 Hz
• Maximum operating voltage: 0.72 kV
• Insulation voltage: 3 kV
• Connection: Screw terminals
• Mounting: Cable tie / base mounting
• Housing material: Self-extinguishing polycarbonate
• Operating temperature: -25°C to +50°C
• Protection class: IP20
• Standards: IEC 61869-2

Final note

A practical choice for retrofitting energy meters in existing installations, combining easy installation with dependable Class 1 accuracy.