BZCT210 Earth Leakage Toroid, 210mm Aperture

  • 210mm diameter aperture
  • 1/1000 ratio
  • Surface mounting with 4 fixing slots
  • Supplied with separate mounting feet

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: 210mm (Order Code: 99-1906)
  • Rated system voltage: 720VAC
  • Min. ELR IΔn setting: 300mA
  • Dimensions (mm): W:149 x H:304 x D:60 (exc. feet)
  • Product standard(s): IEC 61869-1/-2
Distributors Stock Code Link
RS Components 317-618 Go to product
Farnell 4825115 Go to product

Typical applications include:

  • LV switchboards
  • Large cable feeders
  • Industrial distribution panels
  • Plant room electrical distribution

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 210mm (Order Code: 99-1906) 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 300mA helps specify a suitable relay configuration.
  • Simplifies mechanical installation — Surface mount with separate feet provides a documented fixing approach for the installation.
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