| CATALOG NUMBER |
281667 |
| Manufacturer |
Eaton Moeller |
| Product Name |
Eaton Moeller series NZM multi-function device adapter |
| Catalog Number |
281667 |
| Model Code |
+NZM3-XKR13O |
| EAN |
4015082816674 |
| Product Length/Depth |
140 mm |
| Product Height |
30 mm |
| Product Width |
110 mm |
| Product Weight |
0.234 kg |
| Compliances |
IEC |
| Certifications |
CSA-C22.2 No. 5-09 |
Product Name
Eaton NZM3-XKR13O Rear Connection Terminal Block (281667)
Product Brief Introduction
The Eaton 281667 NZM3-XKR13O is a high-performance 3-pole rear connection block designed exclusively for the NZM series molded case circuit breakers. Engineered for top-mounted rear connection with a 13mm contact pitch, it provides a safe, efficient, and space-saving wiring solution for industrial power distribution and control systems. This accessory ensures reliable high-current connections up to 630A, perfect for modern switchgear assembly.
Product Description
The Eaton NZM3-XKR13O (281667) is a premium 3-pole rear connection terminal block, an essential accessory within Eaton’s renowned NZM series of molded case circuit breakers. It is specifically engineered to facilitate efficient, rear-facing cable connections, enabling a cleaner, more organized, and space-efficient wiring layout within electrical panels and switchgear assemblies.
Crafted with precision from high-grade, flame-retardant insulating materials, this terminal block ensures exceptional electrical performance and mechanical stability. It features a robust 3-pole design, tailored for top-mounted installation (denoted by the suffix 'O') on NZM3, PN3, and N(S)3 series circuit breakers. The product adheres to a strict 13mm contact pitch, guaranteeing perfect compatibility and alignment with the corresponding breakers and component adapters.
This connection block is built to handle high operational currents, boasting a rated current capacity of up to 630A for copper conductors, making it suitable for heavy-duty industrial power circuits. Its rear-connection design is a key feature, allowing all main power cables to be routed behind the breaker, significantly reducing front-panel clutter. This not only creates a neater installation but also improves safety by minimizing access to live parts during routine maintenance and enhances cooling efficiency within the cabinet.
The design incorporates large, clearly marked connection terminals to accommodate substantial cable cross-sections, ensuring secure and low-resistance contact. The terminals accept wide cables, supporting efficient power transmission and minimizing heat generation under full load. The entire unit is engineered to meet IP20 protection standards when assembled, providing a degree of protection against accidental contact with live components.
Installation is streamlined and user-friendly. The terminal block features a modular, snap-on design that allows for quick and secure mounting onto the designated component adapters without the need for specialized tools. This modularity ensures perfect alignment and a stable, vibration-resistant connection, critical for reliable operation in industrial environments.
The NZM3-XKR13O is fully compliant with stringent international standards, including IEC/EN 60947-2 and UL489, ensuring its suitability for global applications and adherence to the highest safety and performance norms. It is also RoHS compliant, aligning with modern environmental regulations. Its compact form factor, with approximate dimensions of 180mm x 110mm x 30mm and a lightweight construction of around 0.3kg, allows for easy handling and integration into space-constrained panels.
This terminal block is more than just a wiring accessory; it is a critical component that enhances the functionality, safety, and professionalism of electrical installations. By enabling rear-connected configurations, it supports the construction of modern, high-density switchgear that is both efficient and easy to service, making it an indispensable part for professional panel builders and electrical engineers working with Eaton's NZM series breakers.
Product Advantages
The Eaton NZM3-XKR13O rear connection terminal block offers significant advantages that elevate the design, safety, and efficiency of industrial electrical installations, setting a high standard for switchgear accessories.
Its primary advantage lies in the
innovative rear-connection design. By routing all power cables behind the circuit breaker, it completely transforms the interior layout of electrical cabinets. This eliminates the tangle of wires at the front, creating a vastly cleaner, more organized, and professional installation. This not only improves the aesthetic appeal but also drastically enhances operational safety by reducing the risk of accidental contact with live terminals during inspection or maintenance.
The rear-wiring configuration significantly
optimizes space utilization within the control cabinet. The freed-up front space can be utilized for other components, improved airflow, or simply allows for the use of smaller, more cost-effective cabinets, achieving a higher power density in the same footprint. This is especially valuable in modern industrial applications where space is at a premium.
Engineered for
high-current performance, the terminal block safely handles up to 630A, catering to the most demanding industrial power circuits. The high-quality contact materials ensure a
low-resistance, high-reliability connection, minimizing energy loss, preventing excessive heating, and ensuring long-term operational stability even under continuous full-load conditions.
The
perfectly engineered 13mm pitch and modular design guarantee seamless compatibility and tool-free, snap-on installation with Eaton NZM3, PN3, and N(S)3 series breakers and adapters. This ensures a fast, secure, and error-free mounting process, significantly reducing assembly time for panel builders and lowering labor costs.
Constructed from
premium, self-extinguishing insulating materials, the block provides excellent
dielectric strength and thermal stability. It offers robust protection against electrical tracking and is highly resistant to mechanical shocks and vibrations, common in industrial environments. The integrated IP20 level protection adds an essential safety layer against direct contact.
As an original Eaton component, it guarantees
full interoperability with other NZM series accessories, ensuring a complete and harmonized system. Its compliance with
global certifications (IEC, UL, CSA) ensures its acceptance and reliable performance in markets worldwide, reducing technical barriers for international projects.
Furthermore, the product supports
easy system expandability and retrofitting. Its design allows for straightforward upgrades or modifications to existing installations, making it a future-proof investment. The combination of superior safety, space efficiency, ease of installation, and robust performance makes the NZM3-XKR13O an invaluable asset for high-quality switchgear construction.
Use Scenarios
The Eaton NZM3-XKR13O rear connection terminal block is a highly specialized and versatile component, finding essential application across a broad spectrum of industrial and commercial scenarios where high-power, space-efficient, and safe electrical distribution is required.
It is a cornerstone component in the
manufacturing of custom industrial switchgear and control panels. Panel builders extensively use this product to construct high-density, professional-grade distribution boards, motor control centers (MCCs), and power centers. The rear-connection capability is ideal for building clean, service-friendly panels for factories, processing plants, and large-scale infrastructure.
In
industrial automation and machinery manufacturing, it is the go-to choice for integrating NZM series breakers into heavy machinery, automation lines, and control systems. It provides a reliable high-current interface for main power supplies, ensuring stable operation of motors, pumps, compressors, and other heavy industrial loads while maintaining a tidy internal machine layout.
The product excels in
commercial and infrastructure power distribution, serving as a critical part in main distribution boards (MDBs) and sub-distribution boards for large buildings such as data centers, hospitals, shopping malls, airports, and stadiums. Its ability to handle high currents and optimize cabinet space is crucial for managing the substantial electrical loads of these facilities efficiently.
It is particularly beneficial for
renovation and modernization projects. When upgrading old electrical systems to use modern Eaton NZM breakers, the NZM3-XKR13O allows for the implementation of cleaner, more efficient rear-wiring without the need for complete cabinet replacement, facilitating a cost-effective upgrade path to enhanced safety and performance.
The terminal block is also widely deployed in
specialized industrial environments including marine and offshore applications, mining operations, and power generation facilities. Its robust construction, high current rating, and reliable connection meet the stringent demands of these harsh and critical operating environments.
Additionally, it plays a vital role in
energy management and renewable energy systems, such as solar photovoltaic (PV) installations and wind turbine power converters. It provides a secure and efficient connection point for the high-current DC or AC circuits within these systems, supporting the efficient and safe distribution of generated power.
Whether used in new installations or retrofits, in industrial machinery, building infrastructure, or renewable energy projects, the NZM3-XKR13O consistently delivers the performance, safety, and space-saving benefits required for modern, high-quality electrical designs.
FAQ
What is the Eaton NZM3-XKR13O (281667)?
It is a 3-pole rear connection terminal block for NZM series circuit breakers.
What does the 'O' in the model name signify?
It indicates the block is designed for top mounting.
How many poles does it have?
It is a 3-pole (3-phase) connection block.
What is the contact pitch?
The contact pitch is precisely 13mm.
What is its rated current capacity?
It can handle up to 630A for copper conductors.
Which breakers is it compatible with?
It fits Eaton NZM3, PN3, and N(S)3 series molded case circuit breakers.
Is it for front or rear wiring?
It is specifically designed for rear-side cable connection.
What is the protection rating?
It provides IP20 protection against accidental contact.
What material is it made from?
It is constructed from high-grade, flame-retardant insulating plastic.
Does it require tools for installation?
No, it features a tool-free, snap-on modular design.
What standards does it comply with?
It meets IEC/EN 60947-2, UL489, and RoHS standards.
What are its dimensions?
Approximate dimensions are 180 x 110 x 30 mm.
Can it be used for bottom mounting?
No, the 'O' suffix designates it for top mounting only.
Is this product suitable for outdoor use?
No, it is designed for indoor use within protected electrical enclosures.
