Eaton NZM2-4-NA-1250-AS 3P
- Eaton NZM2-4-NA-1250-AS 3P power circuit breaker for short-circuit and overload protection of power distribution circuits, 3-phase, 3-pole, for industrial and commercial installations.
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Power circuit breaker type NZM2-4-NA-1250-AS
Eaton's NZM2-4-NA-1250-AS power circuit breaker is a compact, three-phase protection device designed for reliable protection of electrical installations and equipment in apLication of industrial and commercial applications. The device provides selective short-circuit and overload tripping, allows flexible configuration of auxiliary contacts and interoperates with a wide range of Eaton system accessories.
- NZM2 three-phase encapsulated power circuit breaker for distribution and motor applications
- High short-circuit capacity in accordance with relevant IEC standards
- Possibility to use Eaton accessories and communication modules
- Compact design for easy installation in switchboards
- Scalable overcurrent and short-circuit protection for various load configurations
- Adapted to operate in demanding environmental conditions
Application and functions
The NZM2-4-NA-1250-AS circuit breaker is designed for protection of power distribution circuits, power lines and mixed loads, including drives. It can operate as the main switchboard circuit breaker, sectional apparatus or protection of outlets. The apparatus provides fast short-circuit disconnection, overload protection and the ability to integrate with automation and monitoring systems thanks to its compatibility with the NZM accessory system.
Design and safety
The design of the NZM2-4-NA-1250-AS power circuit breaker is based on Eaton's proven pLatform of NZM apparatuses, ensuring high switching and mechanical durability. The enclosure provides adequate insulation and touch protection, and extensive terminal and mounting element options allow safe connection of conductors and busbars. The device meets the requirements of relevant international standards for low-voltage power circuit breakers, which guarantees a high level of safety for use in industrial, building and infrastructure installations.
Expansion and integration possibilities
The NZM series allows the use of a wide range of accessories, such as motor drives, rising and undervoltage triggers, auxiliary contacts, terminal covers, and rail and panel mounting components. As a result, the NZM2-4-NA-1250-AS can be easily adapted to project requirements, both in terms of control functions and safety and communication requirements in automation structures.
| Parameter | Value |
|---|---|
| Type of apparatus | Power circuit breaker NZM2-4-NA-1250-AS |
| Series | NZM2 |
| Number of poles | 3 |
| Application | Protection of energy distribution circuits and consumers |
| Type of apparatus | Low-voltage power switch |
| Purpose | Industrial, commercial, infrastructure installations |
| Expandable with accessories | Yes, full compatibility with Eaton NZM accessories |
| Protective functions | Short-circuit and overload protection (depending on the trigger) |
| Control functions | Possibility to use remote drives, triggers, auxiliary contacts |
| Mounting | In low-voltage switchgear, in bus and cassette systems |
| System compatibility | Eaton NZM power apparatus system |
| Standards | Compliance with relevant IEC standards for low-voltage power circuit breakers |
| Safety in use | Touch protection, possibility to use covers and accessories to increase safety |
| Integration possibilities | Integration with automation and monitoring systems through accessories |
| Examples of accessories | Auxiliary contactors, undervoltage triggers, trip triggers, motor drives, terminal covers |
The NZM2-4-NA-1250-AS power circuit breaker is a robust and flexible power system component that allows you to build safe and scalable power distribution solutions. Thanks to its compatibility with Eaton accessories and compliance with international standards, it provides long-lasting and reliable operation in demanding apLications.
FAQ (customer)
- What is the main appLication of the NZM2‑4‑NA‑1250‑AS circuit breaker? It is mainly used for protecting low-voltage power distribution circuits and loads in industrial and commercial installations.
- Can this breaker be expanded with accessories later? Yes, the NZM2 pLatform supports a wide range of Eaton accessories that can be added or modified as project requirements change.
- Is the breaker suitable as a main switch in a distribution board? Yes, it can be used as a main incoming breaker, as well as for sectional and outgoing protection.
- Does the device support remote switching? Remote switching is possible when appropriate motor operators or release units from the NZM accessory range are installed.
- Is the breaker compLiant with international standards? The NZM2 breaker series is designed in accordance with relevant IEC standards for low-voltage circuit breakers.
- Can I use this breaker in harsh industrial environments? Yes, the breaker is designed for demanding appLications, provided that installation and environmental limits specified in Eaton documentation are respected.
FAQ (expert)
- Which trip units are compatible with the NZM2‑4‑NA‑1250‑AS frame? The breaker frame is compatible with the standard NZM2 trip unit families; the exact type and settings must be selected based on rated current, coordination and appLication requirements.
- Is selectivity with upstream protection devices achievable? Selectivity is achievable and must be verified using Eaton’s coordination tables and software tools for the specific combination of devices.
- How can I integrate the breaker into a monitoring system? Integration is possible via dedicated NZM communication and auxiliary modules that provide status indication, signalling and, depending on configuration, data acquisition interfaces.
- What mounting options are available? The NZM2 range supports panel mounting and integration into busbar and cubicle systems using the appropriate mounting kits and terminal accessories.
- What about arc flash and personnel protection measures? Personnel protection can be enhanced with proper coordination, covers, shrouds and, where appLicable, fast-acting releases in accordance with the project’s arc flash study.
- Are there restrictions on using this breaker for motor protection? The breaker can be used in motor circuits when coordinated with suitable overload relays or trip units, respecting the manufacturer’s selection guidelines and standards for motor protection.
Reviews
- Robust frame and proven NZM pLatform make this breaker a reliable choice for industrial distribution boards.
- Good compatibility with Eaton accessories simpLifies standardization across multipLe projects.
- Installation is straightforward when using the dedicated mounting and terminal kits.
- Suitable as a main incomer in compact LV switchgear with limited space.
- Coordination with upstream and downstream devices is well-documented in Eaton tools.
- Long-term users appreciate the mechanical durability and stable performance of the NZM series.
- The ability to retrofit auxiliary contacts and releases adds flexibility during later pLant upgrades.
- Engineers value the clear pLatform concept across different NZM frame sizes.
- Works reliably in demanding industrial environments when environmental specs are observed.
- Considered a solid balance between performance, footprint and system integration options.