General
Product type	neutral conductor split row terminal
Manufacturer	Weidmüller
Cross section	2,5 mm²
Function	longitudinal split for neutral conductor busbar
Insert	Insulation resistance test against earth

The Weidmüller neutral conductor disconnecting terminal block WNT 2.5 10X3 is a specially designed terminal block for use in electrical distributions, particularly for connecting to a neutral conductor busbar. It enables safe and easily testable disconnection of the neutral conductor, allowing measurement of insulation resistance to earth without having to fully disconnect the conductor. This function is particularly advantageous in the maintenance and servicing of electrical installations, as it enables testing without interrupting operation or requiring additional effort.

Applications

The terminal block is intended for use in industrial and commercial electrical installations where targeted testing of insulation resistances on neutral conductors is required. It is typically used in distributors, enclosures, or electrical systems where a neutral conductor busbar is present. The longitudinal disconnect feature allows direct connection to the busbar, enabling the terminal block to function as a disconnect point for testing purposes.

Functions and Equipment in Detail

The neutral conductor disconnecting terminal block features a special longitudinal disconnect, enabling a secure and reliable connection to the neutral conductor busbar. This design allows the neutral conductor to be disconnected at the terminal block without interrupting the entire connection. As a result, insulation resistance between the neutral conductor and earth can be measured, which is important for electrical safety and compliance with standards. The terminal block is designed for a cross-section of 2.5 mm², making it suitable for standard applications in electrical installations.

Technology Explained Simply

The terminal block operates on the principle of a terminal block, where multiple terminals are arranged in a row and mounted together on a mounting rail. The longitudinal disconnect is a mechanical element that interrupts the circuit without requiring the entire conductor to be disconnected. This is particularly beneficial during maintenance work, as testing can be performed without interrupting the supply. The terminal block is designed for use with a neutral conductor busbar, which is typically used in distributors as a common connection point for all neutral conductors.

Compatibility and Accessories

The terminal block is compatible with various accessories used for identification, mounting, or enhancing the installation. These include end plates such as the WAP 2.5-10 or the blue-painted variant WAP2.5-10BL, which complete the visual appearance of the terminal block row. Label carriers such as the BZT 1 WS 10/5 or BZT 1 ZA WS 10/5 allow for clear identification of individual terminals. Additionally, markers such as the SCHT 7 connector marker or terminal markers DEK 5/5 MC NE WS and WS 12/5 MC NE WS are available to facilitate conductor assignment. For mounting, holding plates such as the WHP 2.5-35N/10x3 BL or rail holders such as the WEW 35/2 can be used. Busbars such as the SSCH 10x3x1000 CU/SN serve as connection points for neutral conductors. Tools such as the SWIFTY SET one-hand cable cutter support conductor processing.

Mounting and Installation

Mounting is performed on a standard DIN rail, commonly used in distributors and enclosures. The terminal block is placed on the rail using a screwdriver or suitable tool and tightened securely. Connection to the neutral conductor is made via the clamping jaws, designed for a cross-section of 2.5 mm². The longitudinal disconnect is automatically activated once the terminal block is mounted on the busbar. Installation requires no special tools or additional effort, as the terminal block is standardized and designed for use in electrical distributions.

Advantages in Operation

The main advantage of the neutral conductor disconnecting terminal block is the simplified testing of insulation resistance. Since the neutral conductor does not need to be fully disconnected, testing can be performed more quickly and safely. This reduces workload and minimizes the risk of errors when reconnecting. The terminal block is robust and designed for industrial environments, providing a reliable and long-lasting solution. Compatibility with various accessories allows flexible adaptation to different installation requirements.