3211780 Phoenix Contact

What is this component used for?

This component is a ground modular terminal block designed to create a reliable protective earth connection on DIN rail assemblies. It is typically used in control panels, machinery, plant engineering and railway-related installations where organised grounding is required.

What type of connection does it use?

It uses push-in connection technology, allowing solid conductors and ferruled wires to be inserted quickly without the need for screw tightening. This can help speed up panel wiring and keep installation neat in compact spaces.

What conductor sizes can it accept?

The terminal block is suitable for conductor cross sections from 0.2 mm² to 6 mm², depending on conductor type. It supports solid and flexible conductors, with an AWG range of 24 to 10. For directly pluggable conductors, the stated range is 0.5 mm² to 6 mm².

How many connections does it provide?

It provides 3 connections on a single level. The nominal cross section is 4 mm², making it suitable for grounding arrangements where multiple conductors need to be terminated in a compact footprint.

Which DIN rail sizes is it designed for?

It is designed for mounting on NS 35/7.5 and NS 35/15 DIN rails. This gives flexibility for use in many standard control cabinet and terminal strip layouts.

What are the physical dimensions?

The terminal block has a width of 6.2 mm and a length of 66.5 mm. Its height is 36.5 mm on NS 35/7.5 rail and 44 mm on NS 35/15 rail, which can be useful when checking space inside a panel.

What colour is the terminal block?

It is supplied in green-yellow, the standard colour convention commonly associated with grounding and protective earth connections.

Is it suitable for compact panel layouts?

Yes. Its slim 6.2 mm width and front connection design make it well suited to compact terminal strips and control panels where space is limited but clear grounding provision is still needed.

Can it be used in demanding industrial environments?

It is intended for applications including machine building, plant engineering, process industry and the railway sector. The published data for Phoenix Contact 3211780 also lists an operating temperature range of -60 °C to 85 °C, along with approvals and test results for vibration and shock performance.

Does it support testing and cross-connection accessories?

Yes. The design includes test connection capability, and a range of compatible accessories is listed for the series, including plug-in bridges, test plugs, test adapters, end covers, end clamps, partition plates and terminal markers.

What insulating material is used?

The insulating material is PA and the flammability rating is UL 94 V0. This combination is commonly chosen for terminal block applications where durable insulation and good fire performance are important.

Can ferruled conductors be used with this terminal block?

Yes. Flexible conductors with ferrules can be used. Depending on the ferrule style, the supported conductor size typically goes up to 4 mm², and twin ferrules with plastic sleeve are supported from 0.5 mm² to 1 mm² when using two conductors of the same cross section.