BZCT300 Earth Leakage Toroid, 300mm Aperture

  • 300mm diameter aperture 
  • 1/1000 ratio
  • Designed for direct attachment to cables
  • Tape wound

A Core Balance Current Transformer (CBCT)/Toroid designed for use in conjunction with all Broyce “Type A” Earth Leakage Relays that require an external sensing means.

  • Aperture diameter: 300mm (Order Code: 99-1907)
  • Rated system voltage: 720VAC
  • Min. ELR IΔn setting: 500mA
  • Dimensions (mm): Overall dia. 370 x D:40
  • Product standard(s): IEC 61869-1/-2
Distributors Stock Code Link
Farnell 4825116 Go to product

Typical applications include:

  • Large cable assemblies
  • LV switchboards
  • Industrial power distribution
  • Cable-fed plant installations

Key benefits:

  • Enables residual-current sensing — The core balance transformer provides the sensing element for a compatible Broyce Type A earth leakage relay.
  • Fits the chosen conductor arrangement — The 300mm (Order Code: 99-1907) aperture accommodates a suitable group of circuit conductors, subject to physical fit and installation design.
  • Supports a defined relay setting — The documented minimum ELR IΔn setting of 500mA helps specify a suitable relay configuration.
  • Simplifies mechanical installation — Direct cable attachment provides a documented fixing approach for the installation.
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