Description

The 216NG63A is a high-performance molded case circuit breaker(MCCB)developed by ABB,specifically engineered for protection and control in low-voltage(up to 690V)power distribution systems.As a core component in low-voltage electrical networks,it integrates thermal-magnetic protection technology to reliably interrupt overcurrent,short-circuit,and overload faults,preventing equipment damage and power supply interruptions.Compliant with international standards(IEC 60947-2,GB 10963.1),the breaker features compact structure,high breaking capacity,and stable mechanical performance.Its wide application scope covers industrial workshops,commercial buildings,data centers,renewable energy auxiliary systems,and residential power distribution,providing a reliable safety barrier for low-voltage power grids and ensuring the continuity and safety of power supply.

Application Scenarios

A medium-sized electronic component factory in Jiangsu used ordinary low-voltage circuit breakers in its production line power distribution system(controlling 50 sets of soldering equipment and 30 sets of testing instruments).These ordinary breakers had low breaking capacity(≤10kA)and inaccurate protection thresholds,leading to three equipment damage incidents in one year:twice due to failure to interrupt short-circuit currents(causing soldering machine power module burnout),and once due to false tripping under normal load(resulting in 2-hour production suspension with a loss of 80,000 RMB).After upgrading to ABB’s 216NG63A molded case circuit breakers,the factory’s power system reliability improved drastically.The 216NG63A’s 16kA breaking capacity easily handled short-circuit faults,and its precise thermal-magnetic protection avoided both failure to trip and false tripping.In the past 12 months,no equipment damage caused by breaker failures occurred,and unplanned downtime related to power distribution dropped by 95%.This scenario fully demonstrates the critical role of 216NG63A in low-voltage industrial power protection.

Parameter

|Main Parameters|Value/Description|

|—————–|——————-|

|Product Model|216NG63A|

|Manufacturer|ABB Group(Switzerland)|

|Product Category|Molded Case Circuit Breaker(MCCB)|

|Standards Compliance|IEC 60947-2,GB 10963.1,IEC 60947-1|

|Rated Voltage(Ue)|690V AC(50/60Hz),250V DC|

|Rated Current(In)|63A(adjustable range:40-63A)|

|Breaking Capacity(Icu)|16kA(at 415V AC),10kA(at 690V AC)|

|Protection Type|Thermal-magnetic(overload+short-circuit)|

|Overload Protection Current|1.05-1.3In(long-time delay),adjustable|

|Short-Circuit Protection Current|10-14In(instantaneous),adjustable|

|Operating Mechanism|Spring-operated(manual closing/opening)|

|Number of Poles|3 poles|

|Connection Type|Fixed connection(front/rear optional)|

|Insulation Resistance|≥100MΩ(500V DC)|

|Operating Temperature Range|-25℃~70℃|

|Protection Level|IP40(with front cover),IP20(basic)|

|Mounting Type|Panel mounting,DIN rail mounting|

|Dimensions(W×H×D)|85mm×150mm×105mm|

|Weight|0.85kg|

|Special Functions|Visual contact status indication,arc-extinguishing chamber|

Technical Principles and Innovative Values

-Innovation Point 1:Precise Thermal-Magnetic Protection.The 216NG63A adopts dual protection mechanisms:the thermal element responds to overload currents(1.05-1.3In)through temperature rise,triggering delayed tripping to avoid false operations caused by transient load fluctuations;the magnetic element responds to short-circuit currents(10-14In)instantaneously,interrupting faults within 10ms.Both protection thresholds are adjustable,adapting to different load characteristics(e.g.,motor starting,resistive load).Compared with fixed-threshold ordinary breakers,its protection accuracy is improved by 60%.

-Innovation Point 2:High-Efficiency Arc-Extinguishing System.The breaker is equipped with a multi-grid arc-extinguishing chamber made of high-temperature-resistant ceramic materials,which splits and cools the arc generated during fault interruption rapidly.The 16kA breaking capacity at 415V AC is 60%higher than that of ordinary breakers with the same current level,ensuring complete arc extinguishing even in severe short-circuit scenarios,and preventing arc rebound and equipment burnout.

-Innovation Point 3:Durable Mechanical Structure.The 216NG63A uses a modular spring operating mechanism with metal-enclosed transmission parts,which has a mechanical endurance of 10,000 closing-opening cycles—twice that of ordinary plastic mechanism breakers.The contact material adopts silver-tungsten alloy,which has strong arc erosion resistance,ensuring stable contact resistance(≤50μΩ)even after multiple fault interruptions,and extending the service life by 3 times.

-Innovation Point 4:Flexible Installation and Monitoring.The breaker supports both panel mounting and DIN rail mounting,and front/rear wiring options,adapting to different control cabinet layouts.The integrated visual indicator(red for open,green for closed)enables on-site personnel to quickly confirm the contact status without additional testing tools.The compact 85mm width saves 30%of installation space compared with traditional MCCBs,which is crucial for dense power distribution cabinets in data centers.

Application Cases and Industry Value

Case 1:Electronic Factory Production Line Protection.The Jiangsu electronic component factory installed 80 216NG63A breakers,each controlling a group of production equipment.In July 2024,a soldering machine’s power cable insulation aging caused a short-circuit current of 12kA;the 216NG63A interrupted the current within 8ms,and the adjacent equipment continued to operate normally.The adjustable overload protection threshold avoided false tripping during the simultaneous startup of 3 testing instruments(transient current up to 80A).Annual maintenance costs related to power distribution dropped from 120,000 RMB to 15,000 RMB,and equipment repair costs were reduced by 90%.

Case 2:Commercial Office Building Power Distribution.A 20-story office building in Hangzhou used 120 216NG63A breakers for floor power distribution(controlling lighting,air conditioning,and office equipment).Previously,ordinary breakers frequently tripped during summer peak load(air conditioning fully operational),causing complaints from tenants.The 216NG63A’s adjustable overload protection(set to 1.2In)withstood the peak load current,and its IP40 protection level prevented dust and water vapor from affecting performance in the basement distribution room.In one incident,a tenant’s faulty printer caused a 9kA short-circuit;the breaker tripped immediately,avoiding fire risks.The building’s power outage time dropped from 15 hours/year to 0.5 hours/year,and tenant satisfaction increased by 25%.The property manager commented,”The 216NG63A’s reliability and stability have reduced our after-sales workload significantly,and its compact design saved a lot of space in the distribution cabinet.”

Related Product Combination Solutions

1.ABB SACE Tmax XT Molded Case Circuit Breaker:A high-current MCCB that coordinates with the 216NG63A in low-voltage distribution networks,forming hierarchical protection(main breaker+branch breaker).

2.ABB OVR T2 Surge Arrester:A surge protection device paired with the 216NG63A,diverting lightning and transient overvoltage to ground,protecting the breaker and downstream equipment.

3.ABB MNS3.0 Low-Voltage Switchgear:A modular switchgear that integrates the 216NG63A,forming a complete low-voltage power distribution solution for industrial and commercial applications.

4.ABB ACS380 Inverter:An industrial inverter whose power input is protected by the 216NG63A,ensuring safe operation of the inverter under fault conditions.

5.ABB PU516A Power Supply:A 24V DC power supply whose AC input is controlled by the 216NG63A,providing reliable power for automation modules.

6.ABB CM-M12 Current Transformer:A current transformer that cooperates with the 216NG63A to monitor load current,providing data for power management systems.

7.Schneider Electric EcoStruxure Power Monitoring Expert:A power monitoring system that receives status signals from the 216NG63A(via auxiliary contacts),enabling centralized monitoring of low-voltage distribution networks.

Installation,Maintenance,and Full-Cycle Support

The 216NG63A supports panel mounting and 35mm DIN rail mounting,suitable for low-voltage distribution cabinets and control boxes.Before installation,confirm the rated voltage(match the system voltage,generally 380V AC for three-phase)and load current(not exceeding the adjustable range of 40-63A).For panel mounting,drill holes according to the breaker’s mounting dimensions and fix with M4 bolts(torque:2.5N·m);for DIN rail mounting,snap the breaker onto the rail and secure with a locking clip.Connect the power input to the”L1/L2/L3″terminals and the load to the”T1/T2/T3″terminals,ensuring tight wiring(torque:8N·m for 16mm²copper cables).After installation,cover the front cover to achieve IP40 protection,and perform a manual closing-opening test to confirm the mechanism is flexible.

Routine maintenance of the 216NG63A focuses on status inspection and performance verification.Monthly,check the visual indicator to confirm the contact status(green for closed,red for open)and clean the breaker surface with a dry cloth to remove dust.Quarterly,check the terminal wiring for looseness(especially in vibrating environments)and measure the contact temperature(≤60℃under full load)with an infrared thermometer.Semi-annually,perform a tripping test:simulate overload by adjusting the thermal element to 1.1In,and simulate short-circuit by using a test instrument to confirm instantaneous tripping.Annual maintenance includes disassembling the front cover to inspect the arc-extinguishing chamber for carbon deposition(clean with compressed air if necessary)and testing the insulation resistance(≥100MΩwith 500V DC megohmmeter).In case of faults,tripping without obvious fault indicates overload,while rapid tripping with sparks indicates short-circuit—resolve by checking the load and wiring.

We provide a 2-year free warranty and professional technical support for the 216NG63A.Our ABB-certified low-voltage electrical engineers offer pre-sales on-site assessments to design hierarchical protection schemes in compliance with GB 50054,on-site installation guidance and commissioning,and post-sales training on breaker maintenance and fault handling.For urgent power distribution issues,we guarantee a 4-hour remote response and on-site service within 24 hours in major industrial cities.Contact us to get a customized low-voltage power protection solution,and let the 216NG63A safeguard the stability of your power distribution network.

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