Features
Type	Clamping yoke
Product colour	Grey

The article 260156 from Eaton, type NZM2-XSTS, is a terminal clamp as optional accessory for the circuit breaker series NZM. It serves as a connection component for control wiring and enables a secure and structured connection in the control circuit. The accessory is specifically designed for mounting on 3- or 4-pole circuit breakers of types NZM2(-4), PN2(-4), and N(N/O)2(-4). The modular design of the functional groups ensures flexible and easy installation, with terminal positions available at the top or bottom. The terminal clamp is finished in grey and is supplied with a tunnel terminal, intended for connecting control wiring.

Applications

The terminal clamp NZM2-XSTS is intended for use in industrial and commercial electrical installations where a reliable and secure connection of control wiring to circuit breakers is required. It is particularly used in switchgear, distribution boards, and control systems where the NZM circuit breaker series is employed. The application is for indoor use only, as the protection rating IP1X does not provide protection against touch or water. Compatibility with the specified breaker types allows for standardized integration into existing installations.

Functions and Equipment in Detail

The terminal clamp serves as a mechanical mounting and connection point for control wiring. It is designed for a terminal height or thickness of 2 mm, enabling connection with standard control wiring. The use of a tunnel terminal ensures a secure and durable connection that remains stable even under mechanical stress. The modular construction allows flexible mounting at various positions on the breaker, enabling adaptation to different system configurations. The grey color matches the standard color scheme for industrial components and ensures good visibility in the enclosure.

Technology Explained Simply

The terminal clamp is a mechanical component that connects control wiring to the breaker. The tunnel terminal, included in the delivery, enables a screw connection where the wire is inserted through an opening and then tightened with a screwdriver. The protection rating IP1X means the device is protected against finger contact but not against water or dust. This makes indoor use the only suitable application. The terminal height of 2 mm is designed for standard control wiring, which typically has a corresponding cross-section.

Compatibility and Accessories

The terminal clamp NZM2-XSTS is specifically developed for circuit breaker types NZM2(-4), PN2(-4), and N(N/O)2(-4). It is not compatible with the finger protection type P2X-Finger protection NZM2(-4)-XIPK, as this would cause mounting conflicts. Use is exclusively in combination with the specified breaker models, with the modular design enabling easy integration. The accessory is part of a comprehensive portfolio for the NZM series and extends the application possibilities of the breakers.

Installation and Mounting

Mounting is done by simply inserting the terminal clamp into the designated mounting positions on the breaker. Terminal positions can be selected at the top or bottom, depending on the system requirements. The tunnel terminal is directly attached to the clamp, with the control wire inserted through the opening and secured using a screwdriver. The modular construction allows for quick and error-free installation without additional tools or mounting aids.

Operational Advantages

The terminal clamp NZM2-XSTS provides a reliable and secure connection for control wiring, which is critical for the function of switchgear systems. The modular design and flexible mounting positions increase flexibility during planning and installation. The use of a tunnel terminal ensures a stable connection that remains intact even under operating conditions involving vibrations or mechanical stress. Compatibility with the specified breaker types enables standardized and maintenance-friendly system design.