ENDA CT20 is a 300A current transformer designed for AC current measurement in electrical panels, industrial machinery and automation systems. It is intended for use with compatible CT-input ammeters, including the ENDA EPA242-CT.

The CT20 allows high current to be measured without routing the full primary current directly through the electronic measuring instrument. The main conductor passes through the current transformer, while the CT20 provides a proportional secondary current for the connected ammeter.

With a 1/2000 transformation ratio, a 300A primary current corresponds to a nominal 150mA secondary current.

Technical specifications

• Manufacturer: ENDA
• Model: CT20
• Product type: current transformer
• Primary current: 300A
• Secondary current: 150mA
• Transformation ratio: 1/2000 +/-1%
• Accuracy class: 0.2
• Frequency: 50/60Hz
• Primary-secondary isolation: 3000 Vrms for 1 minute
• Secondary connection: 0.33 mm2
• Ambient/storage temperature: -25...+65 C
• Housing material: PBT, UL94-V0
• Weight: approximately 75 g
• Designed for CT-input ammeters
• Compatible with ENDA EPA242-CT.

Typical applications include industrial electrical panels, motors, electric heating systems, injection molding machines, pumps, compressors, fans, industrial ovens and production machinery where AC current monitoring is required.

When used with a compatible ENDA ammeter such as EPA242-CT, the CT20 enables an AC measurement range of up to 300A.

Important: the CT20 is a measuring current transformer and does not replace overcurrent protection devices.