Automatic 15% discount for all contractors on all orders over £100 excluding VAT

The WTB5-GY is a 5 way 100A terminal block in grey, typically used for alternate phase identification in single-phase or three-phase systems. It provides a secure, tamper-resistant solution for splitting meter tails, connecting consumer units, or managing multiple outgoing circuits in residential and commercial installs.

Like the rest of the WTB5 range, it accepts conductors from 2.5 mm² to 35 mm² and includes a lockable, sealable lid with blanking inserts for unused terminals. The hexagon screw design delivers strong, vibration-resistant clamping - keeping connections secure in demanding environments.

Installer Tip: Use the grey variant when wiring alternate phases in three-phase systems. This helps maintain clear colour coding and compliance with wiring standards.

Key Features

  • 100A rated – suitable for heavy-duty meter tails and circuits
  • 5-way configuration – simplifies multi-circuit connections
  • Cable capacity: 2.5 mm² – 35 mm²
  • Grey coding – commonly used for alternate phases
  • Lockable, sealable lid for tamper resistance
  • Blanking inserts supplied for unused ways
  • Hexagon screw clamps for secure, vibration-proof connection
  • Torque setting: 3 Nm

Compare WTB5 Terminal Block Variants

Model Colour Typical Use
WTB5-BR Brown Live connection
WTB5-GY (This Product) Grey Alternate phase
WTB5-BL Blue Neutral
WTB5-GN Green Earth / bonding
WTB5-PK Pink Additional identifier
Translation missing: en.general.search.loading