EASTRON SZL-ESCT-T24-150A Cable Conversion Current Transformer 150/5A 32015

Measuring high currents safely and accurately is a challenge in electrical installations. The EASTRON SZL-ESCT-T24-150A cable conversion current transformer converts a primary current of 150 A into a standard 5 A secondary signal, enabling standard measuring instruments to monitor large loads without direct connection to the main circuit.

Who is it for

Electricians, panel builders, and energy monitoring professionals who need to integrate current measurement into power distribution systems, sub-metering, or building automation. This transformer is suitable for retrofitting existing installations where cables pass through a 24 mm aperture.

Main features

• 150 A primary to 5 A secondary ratio for standardized measurement
• 24 mm aperture for cable pass-through
• Accuracy class 0.5 for reliable readings
• Rated burden 2.5 VA
• Insulation voltage 3 kV
• Operating temperature range -25°C to +50°C
• PC/ABS housing for durability
• Complies with IEC 61869-2

Specifications

• Primary current: 150 A
• Secondary current: 5 A
• Current ratio: 150/5 A
• Aperture diameter: 24 mm
• Accuracy class: 0.5
• Rated burden: 2.5 VA
• Insulation voltage: 3 kV
• Frequency range: 50/60 Hz
• Operating temperature: -25°C to +50°C
• Storage temperature: -40°C to +80°C
• Housing material: PC/ABS
• Secondary connection: Screw terminals
• Rated short-time thermal current (Ith): 60 x In (1s)
• Rated dynamic current (Idyn): 2.5 x Ith
• Safety factor (FS): < 5
• Mounting type: Cable through / Panel mount
• Colour: Grey

Tips

Ensure the cable is centered in the aperture for best accuracy. Always short-circuit the secondary terminals before disconnecting the measuring instrument to avoid dangerous voltage spikes.