Schneider Air Circuit Breaker NW32H1F2-3200A

Full Model Interpretation

2. Key Technical Specifications

3. Core Product Advantages

3.1 Outstanding Protection Performance

Full electronic precision protection: Micrologic 2.0E trip unit provides LI (long-time + instantaneous) protection; long-time current adjustable 0.8–1.0In

65kA high breaking capacity: Reliably clears severe short-circuit faults

Selective protection: Coordinates perfectly with downstream breakers to avoid wide-area outages

Fault diagnostics: Built-in fault memory records trip cause (過負荷 / 短絡 / earth fault)

3.2 High Reliability & Durability

Double-break arc extinguishing: Combined vacuum + air system for fast arc quenching

Robust mechanical design: Shock and vibration resistant

Strong environmental adaptability: Operating temp -5℃ to +60℃; no derating up to 2000m altitude

Long service life: Reduces replacement and maintenance frequency

3.3 Flexible Installation & Easy Maintenance

Multiple mounting types: 修理済み (F) or draw-out (D); draw-out supports hot-swap

モジュラー設計: Trip and accessories field-replaceable

Universal accessory system: Reduces spare parts inventory

Smart connectivity: Supports Modbus, EtherNet/IP for remote monitoring

3.4 安全性 & Eco-compliance

Standard isolation function: Complies with IEC 60947-2

Visual indication: Clear contact position and trip cause display

Locking device: Prevents unauthorized operation

Green Premium certified: RoHS compliant, free of hazardous substances

4. 動作原理

NW32H1F2-3200A uses electronic tripping + double-break arc extinguishing:

1. 過負荷保護 (long time delay): CTs monitor current; electronic trip calculates thermal buildup
2. 短絡保護 (instantaneous): Triggers immediately when current exceeds set threshold (typically 10–12In)
3. Arc extinction: Double-break contacts separate; arc is split and extinguished rapidly
4. Fault memory: Stores last 10 trip events for analysis
5. 代表的な用途
6. Industrial plants: Main LV distribution, transformer secondary protection
7. Commercial complexes: Main incomers for high-rise buildings, malls, hotels
8. Data centers: UPS input/output protection
9. Renewable energy: Grid connection for PV and energy storage power stations
10. Critical infrastructure: Airports, 病院, metros, railways
11. Marine & offshore: Main switchboard protection (class-approved version)
12. インストール & Operation Guidelines
13. Environment: Dry, below 40℃; max altitude 2000m
14. Wiring: Copper/aluminum busbar or ≥185mm² cable; torque 25Nm
15. Coordination: Selective coordination with downstream MCCBs
16. 設定: Adjust Ir (0.8–1.0In) and Isd based on load
17. メンテナンス: Annual full inspection including trip test
18. Series Models & 代替案

7.1 NW32H1 Series Full Model List (3200A Frame)

7.2 Replacement & Upgrade Options

NW32H1F2-3200A is a flagship product of the Schneider MasterPact NW series.

With 65kA high breaking capacity, precision electronic protection, flexible installation and excellent reliability, it is the ideal choice for main incomers and bus-couplers in heavy industrial and large commercial power distribution systems.

Detailed Application Scenarios

Schneider ACB NW32H1F2-3200A

MasterPact NW series high-end air circuit breaker

3200A rated current • 65kA breaking • fixed mount • Micrologic 2.0

Designed as main incomer / bus-coupler for high-current, high-reliability core LV systems, not for final subcircuits.

1. Main Distribution in Large Industrial Plants

Primary application

1. LV main incomer at transformer secondary

For 2000–2500kVA transformers, continuous 3200A duty

Withstands heavy short-circuit at transformer outlet

2. LV main bus-coupler

For dual-bus / dual-transformer systems, backup & auto-switching

3. Main power for heavy machinery

Steel, cement, chemical, automotive, paper plants

Fans, pumps, コンプレッサー, kilns, production lines

Why suitable: High current, high short-time withstand, 24/7 reliability.

2. Data Center / Computing Center Main Distribution
3. LV main incomers and UPS front-end breakers
4. HVAC, chilled water, precision cooling main circuits
5. Bus-couplers and section breakers for IDC and modular data halls

Why suitable: No nuisance tripping, full selective coordination, long life.

3. Main Distribution for Large Commercial Complexes & High-rises
4. Main LV incomers for landmark offices, malls, hotels, convention centers
5. Zone main incomers for super high-rises
6. Main power for parking, central AC, fire-smoke extraction systems

Why suitable: High current capacity, strong breaking, safe isolation.

4. Public Transport & Critical Infrastructure
5. Main LV breakers for airports, high-speed rail, metro, light rail
6. Main incomers for operating rooms, ICUs, radiology departments
7. Main distribution for stadiums, theaters, exhibition centers

Why suitable: Highest safety level, fire-system compatible, stable in harsh environments.

5. New Energy & Power Projects
6. Grid-connection incomers for large PV and energy storage plants
7. LV side of wind power box transformers, PCS front protection
8. Microgrid and captive power plant grid connection

Why suitable: 690V rated, high surge immunity, strong short-time withstand.

6. Mines, Metallurgy, Oil & Gas (Harsh Environments)
7. Main substations in coal and metal mines
8. High-harmonic, heavy-impact loads in metallurgy and refining
9. Power distribution in explosive / high-pollution areas

Why suitable: Pollution class 3, vibration resistant, no derating at altitude.

7. Marine & Offshore (Class-approved Version)
8. Main switchboard breakers for large vessels, rigs, offshore wind platforms
9. Certified by CCS, BV, DNV, LR, 等.

Why suitable: Anti-roll, anti-vibration, salt-spray resistant.

One-Sentence Positioning

NW32H1F2-3200A = High-capacity, high-reliability, high-breaking “system main gate”

Used only for:

Transformer main incomers

Main bus-couplers

Critical main power supplies

Not used for:

Small loads

Final subcircuits

Standard distribution boxes