Description

Application Scenarios

Consider a large commercial building,like a hospital or a data center,where continuous power supply is absolutely critical for patient care,data integrity,and operational continuity.The main electrical switchgear in such a facility requires a high-capacity circuit breaker to protect the entire incoming power supply and distribute it reliably to various critical loads.An ordinary overload or short circuit could lead to catastrophic outages,compromising safety and causing immense financial loss.The specific pain point is the need for highly selective,intelligent,and reliable protection that can differentiate between various types of faults(overload,short circuit,ground fault)and clear them quickly without causing widespread disruption.

The ABB X1NA3CBS0AAAA0BX is perfectly suited for this demanding environment.Installed as a main incoming breaker or a major feeder breaker,its 800A rating handles the significant electrical load.The integrated LSIG(Long-time,Short-time,Instantaneous,Ground-fault)electronic trip unit provides unparalleled protection flexibility.It can be precisely programmed to allow temporary overloads(e.g.,motor starting currents)while rapidly tripping on severe short circuits.Crucially,the Ground-fault(G)protection is vital in large facilities,preventing dangerous ground faults that can cause fires or electrical shocks.The ability to coordinate these functions selectively ensures that only the affected section of the electrical system is isolated,leaving critical areas operational.The high breaking capacity(42kA at 415VAC)safely interrupts major fault currents.This direct application of the X1NA3CBS0AAAA0BX leads to significantly enhanced power system reliability(e.g.,a 99.999%uptime goal becomes more achievable),improved personnel safety,and substantial cost savings by preventing widespread outages and equipment damage.It addresses the critical need for advanced,intelligent protection in highly sensitive and critical power infrastructures.

Parameter

Here are the key technical parameters for the ABB X1NA3CBS0AAAA0BX(Emax X1N 800A 3-Pole Fixed ACB with LSIG):

Main Parameters

Value/Description

Product Model

ABB X1NA3CBS0AAAA0BX

Manufacturer

ABB(specifically ABB SACE division)

Product Series

Emax X1(Compact Air Circuit Breaker)

Type

Air Circuit Breaker(ACB)

Breaking Capacity Class

N(Normal breaking capacity)

Rated Current(In)

800 A(Amperes)

Number of Poles

3-pole

Mounting Type

Fixed(F:Fixed version)

Connection Type

Front terminals(B)

Rated Operational Voltage(Ue)

Up to 690 V AC(typical,check specific documentation for full range)

Rated Insulation Voltage(Ui)

1000 V AC

Rated Impulse Withstand Voltage(Uimp)

8 kV

Ultimate Short-Circuit Breaking Capacity(Icu)

42 kA at 220/240 V AC;42 kA at 380/415 V AC;35 kA at 440 V AC;25 kA at 500 V AC;10 kA at 690 V AC(values may vary slightly by specific variant,consult datasheet)

Rated Service Short-Circuit Breaking Capacity(Ics)

Typically 100%of Icu

Rated Short-Time Withstand Current(Icw)

42 kA for 1s(for 800A frame,check datasheet)

Trip Unit Type

Electronic

Trip Unit Model

Typically PR331/P(LSIG),PR332/P or PR333/P depending on the full’AAAA0BX’encoding(LSIG is a standard function set).

Protection Functions

L(Long time/Overload),S(Short time/Delayed Short-circuit),I(Instantaneous Short-circuit),G(Ground-fault protection)

Display

Depending on PR type(e.g.,PR331/P has LEDs,PR332/P and PR333/P have graphic displays)

Adjustable Settings

Wide range for L,S,I,G,enabling precise selective coordination.

Measurement Functions

Varies by trip unit,but PR332/P/PR333/P offer extensive measurements(currents,voltages,power,energy,harmonics)

Communication

Options for Modbus RTU,Modbus TCP,PROFINET,EtherNet/IP via communication modules.

Operating Mechanism

Manual front lever,with options for motor operators.

Standards

IEC(International Electrotechnical Commission),UL(Underwriters Laboratories)as indicated by’UL F’in some descriptions.

Dimensions(H x W x D)

Extremely compact for an ACB of this rating(e.g.,approx.367mm H x 276mm W x 156mm D for the X1 frame).

Export to Sheets

Technical Principles and Innovative Values

The ABB X1NA3CBS0AAAA0BX(Emax X1N 800A ACB with LSIG)showcases several advanced technical principles and innovative values that make it a leader in low-voltage power protection:

Advanced Electronic Trip Unit(LSIG):The core innovation is its integrated electronic trip unit,supporting Long-time(L),Short-time(S),Instantaneous(I),and Ground-fault(G)protection functions.

Precision and Selectivity:Unlike thermal-magnetic breakers,electronic trip units offer highly adjustable and precise settings.This enables selective coordination,ensuring that only the circuit breaker immediately upstream of a fault trips,thereby minimizing the impact of a fault and maintaining power to unaffected parts of the system.This can reduce downtime by preventing unnecessary cascading trips.

Comprehensive Protection:The LSIG functions cover a wide range of fault types,from sustained overloads to high-magnitude short circuits and critical ground faults,offering superior protection for equipment and personnel.

Measurement and Diagnostics:Modern Emax trip units(like PR332/P,PR333/P if equipped)provide extensive real-time measurement capabilities(currents,voltages,power,energy,harmonics).They also log fault events,historical data,and maintenance information.This diagnostic power significantly reduces troubleshooting time(e.g.,50%faster fault location)and supports proactive maintenance and energy management.

High Breaking Capacity and Current Limiting Capability:Despite its compact size,the X1N boasts a substantial ultimate short-circuit breaking capacity(Icu)of 42 kA at 415V AC.ABB’s advanced arc extinguishing technology allows for rapid fault current interruption,limiting the specific let-through energy(I²t).This current limiting characteristic minimizes the damaging effects of short-circuit currents on downstream equipment and cables,extending their lifespan and enhancing overall system integrity.

Compact Design(Emax X1):The Emax X1 series revolutionized ACB design by offering the performance of a power circuit breaker in extremely compact dimensions.This smaller footprint allows for:

Space Optimization:Reduces the size of switchgear and electrical panels,saving valuable floor space in commercial and industrial facilities.

Easier Installation and Wiring:The reduced size often means more room for cabling and busbar connections,simplifying installation and maintenance.

Modularity and Connectivity:The Emax X1 is designed with modularity,allowing for easy addition of various accessories(auxiliary contacts,shunt trips,motor operators,communication modules)in the field.This flexibility allows for customization to specific application needs.Its communication capabilities(e.g.,Modbus)enable seamless integration into SCADA,building management,or energy management systems for remote monitoring and control.

Robust Construction and Reliability:As an ABB product,the X1N is built to withstand harsh industrial environments.It features robust mechanical components,durable materials,and undergoes rigorous testing to IEC and UL standards,ensuring long mechanical and electrical life.This translates to high reliability and reduced maintenance over its operational lifetime.

Application Cases and Industry Value

Let’s consider a critical manufacturing facility,such as a semiconductor fabrication plant,where even momentary power interruptions can ruin expensive batches of products and cause substantial financial losses.The main incoming power supply requires absolute reliability and precision in fault isolation.If a fault occurs,it must be cleared instantly and selectively to prevent a cascading shutdown of the entire facility.

By installing the ABB X1NA3CBS0AAAA0BX as the main incoming breaker,the plant significantly enhances its power protection infrastructure.The 800A rating provides ample capacity for the facility’s high power demands.The LSIG electronic trip unit is precisely configured to differentiate between various types of faults:

Long-time(L)protects against prolonged overloads from equipment.

Short-time(S)provides delayed protection for moderate short circuits,allowing downstream breakers to clear the fault first for better selectivity.

Instantaneous(I)trips immediately for severe short circuits,preventing major damage.

Ground-fault(G)ensures rapid tripping on dangerous ground faults,which are critical in facilities with sensitive electronic equipment.

This precise and selective tripping capability means that if a fault occurs in one section,only the specific X1NA3CBS0AAAA0BX or a downstream breaker trips,preventing the entire plant from going offline.The breaker’s compact size optimizes space in the main switchgear.Furthermore,the communication capabilities of the electronic trip unit allow facility managers to monitor power quality,current consumption,and receive instant alerts,enabling proactive energy management and faster incident response.This application directly translates to a 25%reduction in production losses due to power quality issues,enhanced equipment longevity,and greatly improved safety,demonstrating immense value in high-tech,mission-critical environments.

Installation,Maintenance,and Full-Cycle Support

Installation Preparation:

Installing the ABB X1NA3CBS0AAAA0BX(Emax X1N 800A ACB)requires certified electrical professionals.Absolute priority must be given to safety:ensure all power to the switchgear is completely de-energized,locked out,and tagged out before any physical work begins.Consult the official ABB Emax X1 Series Hardware Manual for precise instructions on:

Mounting:As a fixed-type breaker,it must be securely mounted in its designated compartment within the electrical panel or switchgear.Ensure sufficient clearance for air circulation and access.

Busbar/Cable Connections:Connect main power busbars or cables to the appropriate terminals.Pay meticulous attention to proper torque values for all connections to prevent hot spots and ensure low resistance.Ensure correct phase sequencing.

Grounding:Properly ground the circuit breaker frame and associated metalwork to the main protective earth system.

Control Wiring:Wire auxiliary contacts,shunt trips,motor operators,and communication modules(if applicable)according to the provided schematics.Ensure proper insulation and segregation of control wiring from power wiring.

Trip Unit Configuration:Before energization,the LSIG electronic trip unit must be precisely configured.Use the trip unit’s display(if PR332/P or PR333/P)or ABB’s dedicated software(e.g.,Ekip Connect)to set the Long-time,Short-time,Instantaneous,and Ground-fault protection curves and thresholds to ensure proper selective coordination with other protective devices in the system.

Pre-energization Tests:Conduct insulation resistance tests on all circuits(power,control)and verify wiring continuity before applying power.

Maintenance Recommendations:

The ABB X1NA3CBS0AAAA0BX is designed for a long operational life,but regular,proactive maintenance is essential to ensure its continued reliability and performance.Refer to ABB’s Emax X1 Series Maintenance Manual for detailed schedules:

Visual Inspection(Regular):Annually or more frequently in harsh environments,inspect the ACB for physical damage,signs of overheating(discoloration,melting),loose connections,and excessive dust or foreign material accumulation.

Cleaning(Periodic):With the breaker de-energized and racked out(if withdrawable,though this is a fixed version),use dry compressed air or a soft,non-abrasive cloth to clean the insulation surfaces and remove dust.Never use solvents.

Contact Inspection and Cleaning(Periodic):After a significant fault interruption or based on maintenance schedule,inspect the main contacts for wear,pitting,or carbon buildup.Clean or replace contacts if necessary(requires specialized tools and training).

Connection Tightness(Periodic):Re-torque all power and control wiring connections.Vibrations and thermal cycling can cause them to loosen.

Mechanical Operation Test(Annual/Bi-annual):Manually trip the breaker(using the push-to-trip button)and perform open/close operations using the operating handle or motor operator(if installed)to ensure smooth mechanical functionality.

Electronic Trip Unit Test(Periodic):Perform primary or secondary injection tests using specialized test equipment to verify the accuracy and functionality of all LSIG protection functions.This is crucial for verifying that the breaker will trip correctly during a fault.The frequency depends on application criticality.

Lubrication:Lubricate moving parts of the operating mechanism as specified in the maintenance manual,using approved lubricants.

Diagnostic Data Review:Regularly download and analyze event logs and measurement data from the electronic trip unit using ABB’s software.This can reveal trends or pre-fault conditions.

Full-Cycle Support:

ABB and its authorized service partners provide comprehensive full-cycle support for the Emax series ACBs:

Technical Documentation:Access to a full range of manuals,datasheets,and application notes.

Technical Support:Expert assistance for product selection,application engineering,troubleshooting,and commissioning from ABB’s global network.

Training:Comprehensive training programs for design engineers,installers,and maintenance personnel on ACB operation,maintenance,and advanced protection concepts.

Genuine Spare Parts:Availability of original ABB spare parts(e.g.,contacts,springs,coils,trip units)to ensure proper repairs and system integrity.

Service and Repair:Professional repair,refurbishment,and testing services provided by factory-certified technicians.

Lifecycle Management:Guidance on product upgrades,replacements,and modernization solutions for aging switchgear.

Product Guarantee

At Shenzhen Changxin,our deep expertise in industrial automation and low-voltage power distribution equipment underpins our unwavering commitment to quality and safety.For products like the ABB X1NA3CBS0AAAA0BX(Emax X1N 800A ACB),we recognize that reliability and precise protection are not merely features,but absolute imperatives for safeguarding critical electrical infrastructure and ensuring personnel safety.Every unit that leaves our facility undergoes stringent quality control and comprehensive functional testing by our seasoned technical team,ensuring flawless performance and adherence to ABB’s rigorous standards upon delivery.We back the ABB X1NA3CBS0AAAA0BX with a robust product guarantee,reflecting our profound confidence in its durability and its capability to provide dependable LSIG protection against overloads,short circuits,and ground faults in your most demanding industrial and commercial applications.Our dedication extends far beyond the point of sale.Our expert after-sales support team is always ready to provide unparalleled technical assistance,from seamless integration guidance and optimal setting configurations to efficient troubleshooting and problem resolution.By choosing Shenzhen Changxin,you are not merely acquiring a product;you are engaging a trustworthy partner devoted to safeguarding your electrical systems,minimizing downtime,and maximizing operational safety globally.

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ABB X1NA3CBS0AAAA0BX: Emax X1N 800A 3P Fixed Air Circuit Breaker