General
Number of connections	2
Connection type	Screw connection
Rated cross-sectional area	10 mm²
Cross section	0,5 - 16 mm²
Mounting type	PE foot with mounting screw, M4
Mounting method	NS 35/7,5, NS 35/15, NS 32
Colour	Green-yellow

The protective earth conductor terminal block USLKG10 N from Phoenix Contact is a component for safe and reliable connection of protective earth conductors in electrical installations. It enables the parallel mounting of multiple protective earth conductor cables on a common support rail, ensuring a structured and clear installation. The terminal block is specifically designed for use in industrial and commercial electrical installations, where high mechanical stability and electrical reliability are required.

Applications
This terminal block is used in electrical installations, particularly in systems executed according to the regulations of DIN VDE 0100 and similar standards. It is suitable for connecting protective earth conductors (PE conductors) in enclosures, distribution boxes, or other electrical switching installations. Mounting is done on standard support rails of types NS 35/7,5, NS 35/15, and NS 32, enabling universal use in industrial electrical engineering.

Functions and Equipment in Detail
The terminal block features two connections, each implemented via a screw connection. This allows for secure mechanical fastening of the conductors, with screws equipped with an M4 thread. Mounting is achieved via a PE foot, which is placed directly onto the support rail and secured with the mounting screw. The green-yellow color identifies the terminal block as a protective earth conductor component in accordance with international standards, enabling clear identification within the enclosure.

Technology Explained Simply
The rated cross-section is 10 mm², meaning the terminal block is designed for cables with a maximum cross-section of 10 mm². The actual supported cross-section range is between 0.5 mm² and 16 mm². This range covers most applications in industrial electrical engineering, from smaller control lines to larger protective earth conductors in high-performance systems. The terminal block is dimensioned to ensure a stable and corrosion-free connection even under higher current loads.

Compatibility and Accessories
The terminal block is compatible with various accessories used for labeling, termination, or extending the installation. These include, for example, terminal markers (such as UC-TM 10 or UCT-TM 10) for clear labeling of connections. End caps (e.g. D-UK 4/10) or end caps (e.g. NS 35/15 CAP) are used for secure termination of the support rail. Additionally, insulated fixed bridges (FBI 10-10) are available to electrically connect multiple terminals. Zigzag bands (e.g. ZB10,LGS:U-N) allow structured labeling of connections, with various labeling patterns such as consecutive numbers or L1-N,PE available. Labeling cards (SBS10:UNBEDRUCKT) offer another option for individual labeling.

Mounting and Installation
Mounting is done on standard support rails with widths NS 35/7,5, NS 35/15, and NS 32. The terminal block is placed onto the rail using the integrated PE foot and secured with an M4 mounting screw. The screw connections allow for easy and secure connection of protective earth conductor cables. Installation requires no special tools, except a suitable screwdriver or an electric screwdriver for the mounting screw.

Advantages in Operation
The terminal block provides high mechanical stability and reliable electrical connection, even under demanding operating conditions. The green-yellow color ensures clear visual identification as a protective earth conductor component, simplifying maintenance and inspection. The use of standard support rails ensures universal installation compatibility in existing enclosures. The combinability with various labeling elements and accessories enables flexible and documentable installation.