Current Transformers

171 parts

Current transformers (CT) from Schneider Electric, Siemens and ABB, with over 160 products for metering and protection in low-voltage panels. Primary ratings run from 40 A to 6000 A, mostly with a 5 A secondary, plus low-voltage output types for compact meters. Stoklink ships worldwide from Turkey and quotes bulk orders on request.

171 parts

Showing 1–48
Part number · product In (A) StockPrice Add to cart or request a quote
Quote

Can't find the part you need?

Send the part numbers or the specs you need. We reply with price, stock and dispatch time per line.

Guide

Current Transformers buying guide

What's in this range

  • Schneider Electric PowerLogic CT types, such as MC, HD, HG and GJ, in accuracy classes from 0.5 to 3.
  • Schneider Electric PowerLogic LVCT solid-core transformers with a low-voltage output such as 0.333 V.
  • Siemens 4NC5 transformers, for example 150/5 A and 1600/5 A.
  • ABB split-core transformers designed for use with InSite Pro energy management devices.
  • Low-voltage output types for compact meters and energy sensors.

How to choose

  • Primary current: pick a ratio slightly above the maximum load current so the meter works in its accurate range.
  • Secondary: 5 A is standard for panel meters, 1 A is used where leads are long, and mV output types need a matching meter input.
  • Accuracy class and burden: class 0.5 or better for billing, class 1 for monitoring, and check that the burden in VA covers the meter and wiring.
  • Window size: the opening must fit the busbar or cable. Split-core types install without disconnecting the conductor.
FAQ

Current Transformers questions

What happens if a current transformer secondary is left open?

A live current transformer must never run with an open secondary. The voltage can rise to a dangerous level.

What is the difference between a metering CT and a protection CT?

A metering CT is accurate at normal load current. A protection CT keeps its accuracy at high fault currents so relays can trip correctly.

Can you ship current transformers to my country?

Yes. Stoklink ships worldwide from Turkey under EXW terms. Lead time depends on distributor stock, and project quantities are quoted on request.

Added to cart Could not add to cart

View cart