RS PRO 2-Way G DIN Rail Earth Terminal Block, 4mm², 22 → 11 AWG Wire, Screw Down, Nylon Housing

These green/yellow coded terminal blocks for grounding / earthing wires.

Green/yellow coded terminal blocks
Screw connection

Earth type terminal blocks are commonly used and are vital in providing protection for electrical units and individuals from interference such as electrical or magnetic fields. Earth terminal blocks can be us in a variety of applications such as:
Distribution boards
Control centres and machine control systems

FAQs
What is an earth terminal block?
Earth terminal blocks, also known as ground terminal blocks and earth terminals are used for grounding and earthing cables. Earth terminal type blocks are designed to protect electrical units and individuals from interference such as electrical or magnetic fields. This process known as grounding or earthing is a safe way to discharge excess electricity from an appliance.
Why RS PRO?
RS PRO is our own brand range and brings you a wide range of high-quality, great value products offering you more choice. Trusted by engineers all over the world, every part of every RS PRO product has been rigorously tested against demanding industry standards; they’re only given the RS PRO seal of approval if we’re confident of their exceptional quality, which means you can be confident too.

UL, CSA