Chint NA1-3200X-3200M/3P Air Circuit Breaker

2. Spécifications techniques de base

3. Fonctionnalités principales

3.1 Intelligent Protection System

Three-stage protection: Long-time delay for overload (caractéristique à temps inverse), short-time delay for short circuit (selectable fixed/inverse time), and instantaneous short-circuit protection, precisely matching power distribution system requirements.

Protection contre les défauts de terre: Residual current protection optional, sensitivity adjustable from 0.03A to 1A.

Adjustable protection parameters: Flexible parameter configuration via intelligent controller to adapt to diverse load characteristics.

Fault recording: Automatically stores the latest 10 fault records including fault type, current value and time for rapid troubleshooting.

3.2 High Reliability Design

High Class X breaking capacity: 100kA short-circuit breaking capacity to ensure reliable disconnection under severe short-circuit faults and guarantee equipment safety.

Optimized arc extinguishing system: Adopts multi-break and longitudinal seam arc extinguishing technology for rapid arc extinction and fast recovery after breaking.

Long service life: Mechanical durability up to 10,000 opérations; electrical durability up to 5,000 opérations.

Vibration and shock resistance: Compliant with GB/T 14048.2 to adapt to harsh industrial environments.

3.3 Flexible Expandability

De riches accessoires optionnels: Déclenchement de dérivation, undervoltage trip, closing solenoid, motor charging mechanism, contacts auxiliaires, contacts d'alarme, key lock, etc..

Extended communication: Optional Modbus-RTU, Profinet, EtherNet/IP modules for remote monitoring and intelligent power distribution management.

Interlock functions: Cable interlock and connecting rod interlock available to meet electrical and mechanical interlock requirements.

4. Compatible Equipment & Scénarios d'application

Compatible Equipment

Distribution transformer: Main protection switch for low-voltage side of transformers

Generator set: Protection switch for generator outgoing circuits

Busbar system: Bus section protection and tie control

Gros moteur: Incoming switch for Motor Control Center (Centre multicompte)

UPS system: Protection switch for UPS input and output circuits

Scénarios d'application

1. Industrial power distribution: Main power distribution systems for factories, workshops and production lines.
2. Commercial building power distribution: Main and floor power distribution for shopping malls, hotels and high-rise buildings.
3. Data centers: Mission-critical areas requiring high power supply reliability such as server rooms and cloud computing centers.
4. New energy industry: Low-voltage power distribution systems for photovoltaic power stations and wind farms.
5. Infrastructure: Power distribution systems for transportation hubs including airports, subways and railways.
6. Comparaison des modèles

6. Cross-Brand Equivalent Model Comparison

7. Sélection & Application Guidelines
8. Breaking capacity matching: Select proper grade according to system short-circuit current calculation (Standard 80kA, Class X 100kA, Class H 120kA).
9. Rated current selection: Determine operating current based on total load current and future expansion; optional ratings under 3200A frame: 2000UN, 2500UN, 3200UN.
10. Trip unit selection: Type M intelligent trip for most industrial and commercial applications; Type L standard trip for simple protection requirements.
11. Mounting type: Draw-out type for easy maintenance and replacement (critical circuits); fixed type for cost-effective general circuits.
12. Operation mode: Manual for small-capacity and infrequent operation; motorized for large-capacity, frequent operation and remote control.
13. Accessory configuration: Select shunt trip, undervoltage trip, auxiliary contacts and communication modules as required by control and protection logic.
14. Entretien: Regularly inspect mechanical mechanisms, arc extinguishing chambers and contact wear to ensure long-term stable operation.

Chint NA1-3200X-3200M/3P Complete Accessory List & Selection Codes

1. Core Control Accessories (Essential for Control Circuit)

1.1 Déclenchement de dérivation (F)

Used for remote breaker tripping, applicable to emergency shutdown and automatic control systems.

Selection Note: Pulse type: single power-on duration ≤ 2s, maximum 5 times/min; Continuous type: single power-on duration ≤ 2s to avoid component burnout.

1.2 Déclenchement sous-tension (Q)

Automatically trips the breaker under low grid voltage to prevent equipment overload damage.

Selection Note: 3200A frame adopts instant suction type as standard; self-suction type features wider delay range for voltage-fluctuation-sensitive equipment.

1.3 Closing Solenoid (X) / Closing Coil

For remote closing, matched with motor charging mechanism.

1.4 Motor Charging Mechanism (M.)

Stores energy for breaker closing and provides closing power.

2. Intelligent Control & Communication Accessories

2.1 Intelligent Controller Upgrade

Type M is standard; upgraded versions with enhanced functions are optional.

2.2 Modules de communication (Surveillance à distance)

2.3 Auxiliary Functional Modules

3. Auxiliary Contact System (Indication d'état & Control)

NA1-3200X standard configuration: 4 sets of transfer contacts (4NO+4NC), expandable.

4. Verrouillage mécanique & Safety Accessories

4.1 Verrouillage mécanique (Misoperation Prevention)

4.2 Door Interlock

4.3 Other Safety Accessories

5. Montage & Connection Accessories

5.1 Main Circuit Accessories

5.2 Secondary Circuit Accessories

6. Complete Configuration Example

Exemple:

NA1-3200X-3200M/3P, motorized draw-out type, AC220V, with shunt trip / undervoltage trip / closing solenoid + 5 sets transfer contacts + Profinet communication + connecting rod interlock

Complete Order Model:

NA1-3200X-3200M/3P Motorized Draw-out AC220 F-AC220 Q-AC230 X-AC220 AX-5Z COM-PN+PSU-1 LK-LG

7. Accessory Application Notes
8. Unified control voltage: Use identical voltage for shunt trip, undervoltage trip, closing solenoid and motor charging mechanism to simplify wiring.
9. Communication matching: PSU-1 power module required for Profinet/EtherNet/IP; ST-DP module required for Profibus-DP.
10. Auxiliary contact capacity: 5A@AC230V; use RU-1 relay module for high-power load control.
11. Undervoltage trip requirement: Undervoltage trip coil must be powered on before breaker closing.
12. Shunt trip specification: Single energization time ≤ 2s, frequency ≤ 5 times/min to avoid overheating damage.