Eaton NZM4-XRHI-250AC-SW AC250V
- Eaton NZM4-XRHI-250AC-SW remote open-circuit voltage trip for NZM4/N4 power circuit breakers. Allows remote tripping of the circuit breaker by a control signal. Control voltage: AC 250 V.
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NZM4-XRHI-250AC-SW - Remote AC 250 V open-circuit voltage trip for NZM4 / N4 power circuit breakers
Eaton's NZM4-XRHI-250AC-SW remote open-circuit voltage trip unit enables remote tripping of NZM4 and N4 series power circuit breakers using an AC 250 V control voltage. The module is designed for use in low-voltage switchgear where fast and safe circuit disconnection is required in emergency situations or as part of system automation.
- Designed for NZM4 power circuit breakers and N4 contactor circuit breakers
- AC 250-volt control voltage with specified operating range
- Remote tripping function to open (shunt trip) the circuit breaker
- Possibility of integration with automation and protection systems
- Modular design for mounting directly on the circuit breaker
Intended use and application
NZM4-XRHI-250AC-SW is an accessory dedicated for mounting on Eaton's NZM4 series power circuit breakers and N4 compact power circuit breakers. It allows the breaker to be switched off remotely using a voltage signal, which allows it to work with control systems, BMS systems, overcurrent protection systems and safety systems. It is used in industrial, commercial and infrastructure installations as an element that provides selective and fast power disconnection in critical situations.
Functions and mode of operation
The device operates as a voltage trip (shunt trip) that initiates the mechanical disconnection of a power circuit breaker when the appropriate control voltage is applied. It works with the drive mechanism of the circuit breaker, causing it to open immediately regardless of the position of the manual controls. This enables the realization of emergency shutdown functions, remote disconnection of parts of the installation, as well as linkage to external signals from monitoring and security systems.
Integration with apparatus and security
The NZM4-XRHI-250AC-SW module is designed as a component of Eaton's low-voltage apparatus system, mechanically and electrically compatible with NZM4 and N4 power circuit breakers. Installation is carried out in accordance with the manufacturer's instructions, ensuring proper transfer of the trip drive and proper electrical isolation. The use of original Eaton accessories guarantees the maintenance of short-circuit parameters, safety of use and compliance with the relevant standards for low-voltage switchgear.
| Parameter | Value |
|---|---|
| Manufacturer | Eaton |
| Circuit breaker series | NZM4 / N4 |
| Type of accessory | Remote opening voltage trip (shunt trip) |
| Manufacturer's designation | NZM4-XRHI-250AC-SW |
| Control voltage | AC 250 V |
| Type of control voltage | Alternating (AC) |
| Purpose | NZM4 power circuit breakers, N4 compact power circuit breakers |
| Function | Remote tripping of breaker opening |
| Range of application | Low-voltage installations, switchgearnice industrial and commercial |
| System integration | Cooperation with automation systems, BMS, safety systems |
| Mounting | Module mounted directly on power circuit breaker according to Eaton instructions |
| Mechanical compatibility | Dedicated design for NZM4 / N4 series |
| Safety | Emergency and remote shutdown, circuit disconnection when control signal is given |
| Type of application | Fixed low-voltage distribution installations |
| Product media | No media in this specification |
The NZM4-XRHI-250AC-SW is an integral part of Eaton's switchgear system, increasing the level of safety and automation in low-voltage installations. With a precise match to the NZM4 and N4 circuit breakers, it provides reliable and fast remote circuit shutdown under all operating conditions.
FAQ (customer)
- What is the purpose of the NZM4-XRHI-250AC-SW module? It is a shunt trip release that allows remote opening of NZM4 and N4 circuit breakers using a 250 V AC control signal.
- Can I use this accessory with other circuit breaker series? No, it is specifically designed and mechanically matched for Eaton NZM4 and N4 breakers.
- Do I need a separate power suppLy for the shunt trip? Yes, you must provide an appropriate 250 V AC control voltage from your control or automation system.
- Is this module suitable for emergency stop functions? It can be integrated into an emergency stop circuit, provided the overall system is designed according to safety standards.
- Can I retrofit this module to an existing breaker in the field? Yes, it can typically be retrofitted, following Eaton’s installation instructions and safety guidelines.
- Does this accessory affect the breaking capacity of the circuit breaker? No, when correctly installed, it does not change the rated breaking capacity of the breaker.
FAQ (expert)
- What is the typical operating voltage range around the 250 V AC nominal? The exact operating range is defined in the official Eaton datasheet and should be respected for reliable tripping.
- Is the shunt trip coil designed for continuous duty? As with most shunt trip releases, it is intended for short-duration energization; continuous energization may cause overheating.
- How is galvanic isolation handled between the control circuit and power circuit? Isolation is provided through the breaker and accessory design; details are specified in the Eaton technical documentation.
- What are the environmental limits (temperature, humidity) for this accessory? Use the same environmental limits as for the NZM4/N4 breaker frame, as provided in the official catalog and manuals.
- Can the module be combined with other internal accessories in the same breaker? Compatibility with other modules (e.g., auxiliary contacts, undervoltage releases) must follow Eaton’s accessory configuration rules.
- Is there a specific wiring diagram for integrating this shunt trip into automation systems? Yes, Eaton provides appLication and wiring diagrams in the product’s technical documentation and catalogs.
Reviews
- Reliable shunt trip that integrates easily with our existing NZM4 breakers in the main distribution board.
- Installation was straightforward, and the module worked correctly with our 250 V AC control circuit from the first test.
- Good quality accessory from Eaton; once installed, we have had no nuisance trips or coil failures.
- The product allowed us to impLement a central emergency shutdown function without changing the main breakers.
- Mechanical fit on the N4 breaker is precise, which makes panel assembly cleaner and faster.
- Clear documentation from Eaton helped the commissioning team wire the shunt trip correctly.
- After several months of operation in an industrial environment, the remote tripping function remains stable and dependable.
- Price-to-performance ratio is acceptable, especially considering the safety and control benefits it adds.
- Used in combination with a BMS system, the shunt trip provides effective remote isolation for maintenance operations.
- A solid choice for projects that require standardized components across multipLe panels and installations.