Contactor,circuit breaker,solar inverter,electric meter,solar batteries
Schneider NW32H1-4P-3200A Air Circuit Breaker (ACB)
The Schneider NW32H1-4P-3200A is an air circuit breaker (ACB) from the MasterPact NW series, designed for main incoming and bus-section protection in low-voltage power distribution systems (≤690V). Featuring high breaking capacity and flexible protection configurations, it serves as a core protective component for power distribution in industrial and large commercial buildings.
- Model Explanation
| Part of Model | Description |
| NW | Product series: MasterPact NW series air circuit breaker |
| 32 | Frame rated current: 3200A (configurable up to 3200A) |
| H1 | Breaking capacity class: 65kA@440VAC (Icu), 65kA@690VAC (Icw 1s) |
| 4P | Number of poles: 4 poles (3 phases + neutral) |
| 3200A | Operational rated current: 3200A (requires matching trip unit) |
- Core Technical Parameters
| Category | Specification | Notes |
| Basic Parameters | ||
| Product Type | Air Circuit Breaker (ACB) | MasterPact NW series, withdrawable / fixed type available |
| Rated Voltage (Ue) | 690V AC 50/60Hz | Max. operational voltage Ui = 1000V |
| Rated Insulation Voltage (Ui) | 1000V AC | Complies with IEC 60947-2 |
| Rated Impulse Withstand Voltage (Uimp) | 12kV | Ensures insulation safety |
| Frame Rated Current (Iu) | 3200A | Configurable rated current In ≤ 3200A |
| Breaking Capacity (Icu) | 65kA@440VAC | Class H1, 3-second withstand current Icw = 65kA@690VAC |
| 50kA@690VAC | ||
| Poles | 4P (3L+N) | Neutral position selectable (left / right) |
| Mechanical & Installation | ||
| Mounting | Withdrawable (standard) / Fixed | Withdrawable for easy maintenance |
| Operation | Manual / motor stored energy + manual / motor operation | Motor operation mechanism optional |
| Dimensions | Approx. 465×550×420mm | Slightly varies by mounting type |
| Weight | Approx. 85kg | Fixed type slightly lighter |
| Protection Functions | ||
| Standard Protection | Long-time overload (L), short-time short-circuit (S), instantaneous short-circuit (I) | Requires Micrologic / ET series trip units |
| Optional Protection | Earth fault protection (G), residual current protection (RCD) | Supported by advanced trip units |
| Isolation Function | Complies with EN / IEC 60947-2 | Can be used as isolating device |
| Trip Compatibility | ||
| Supported Trip Units | Micrologic 2.0 / 5.0 / 6.0 series | Different function levels available |
| ET2E / ET6E series | ||
| Communication | Modbus, Profibus, Ethernet optional | Network connectivity via advanced trips |
- Product Features & Advantages
- High-Reliability Design
Modular structure: Easy maintenance and expansion, component replacement without full disassembly
Vacuum interrupter: Strong arc quenching, long service life, suitable for frequent operation
Mechanical life: Up to 10,000 operations at rated current; electrical life 5,000 operations
Environmental adaptability: Operating temperature -5℃~+40℃, humidity ≤95% (non-condensing)
- Comprehensive Protection
Three-stage protection: Long-time overload (inverse), short-time short-circuit (definite), instantaneous short-circuit for precise fault matching
Selective protection: Coordination between upstream and downstream breakers via trip settings to minimize outages
Fault memory: Advanced trips record fault type, current, time for diagnostics
Power monitoring: Selected trips (e.g. Micrologic 6.0) support voltage, current, power and energy metering
- Safety & Convenience
Safety interlocks: Mechanical and electrical interlocks to prevent misoperation
Withdrawable design: Maintenance without main power interruption, improving system availability
Status indication: Clear ON/OFF/energy storage indicators for on-site observation
Remote control: Motor operation mechanism enables remote ON/OFF for automation systems
- Installation & Wiring Guidelines
- Mounting Types
Withdrawable mounting:
Suitable for critical facilities requiring frequent maintenance (data centers, hospitals)
Installation depth approx. 420mm with sufficient pull-out space
Complies with IEC 60947-2, anti-mismatch function
Fixed mounting:
For limited space or low-maintenance applications
More compact layout, lower cost
Requires main power disconnection for service
- Wiring Requirements
Main terminals: Accept cables or busbars; busbars recommended for low contact resistance
Control circuit: Separate supply (AC/DC 220V or 110V) for trip and operating mechanism
Neutral position: Left or right selectable, to be specified when ordering
Terminal torque: Tighten per Schneider official manual to avoid overheating
- Applications & Selection Advice
- Typical Applications
Industry: Main incoming, large motor control centers (MCC), VFD front-end protection
Commercial buildings: Main distribution for high-rises, shopping malls, hotels
Infrastructure: Power distribution for data centers, hospitals, airports, metros
New energy: Combiner protection in PV power stations and energy storage systems
- Selection Points
| Selection Aspect | Notes |
| Breaking Capacity | Select per system short-circuit calculation; Class H1 (65kA@440V) suits most industrial sites |
| Trip Selection | Basic protection: Micrologic 2.0; power monitoring: Micrologic 6.0; communication: network-enabled models |
| Mounting | Withdrawable for critical loads, fixed for general loads, balancing cost and maintenance |
| Operation | Motor operation for remote control; manual for local operation |
| Auxiliary Functions | Shunt trip for fire linkage; undervoltage trip for undervoltage protection |
- Price Reference & Alternatives
- Price Range (April 2026, CNY)
| Configuration | Price Range (CNY) | Notes |
| Basic frame (without trip) | 8,000–12,000 | Fixed: 8,000–10,000 |
| Withdrawable: 10,000–12,000 | ||
| With Micrologic 2.0 | 12,000–16,000 | Basic three-stage protection, no communication |
| With Micrologic 5.0 | 16,000–22,000 | Earth fault protection, Modbus supported |
| With Micrologic 6.0 | 22,000–30,000 | Full protection, energy metering, Ethernet |
| With motor operation | +3,000–5,000 | Enables remote control |
- Replacement & Upgrade Models
Direct replacement: MasterPact MT series (MT32H1-4P-3200A), fully compatible and advanced
Upgrade: Newer MasterPact NW models (e.g. NW32H2, 85kA@440V) for higher short-circuit systems
Economical alternative: Schneider EZD series MCCBs (EZD400E43200) for lower breaking requirements
The Schneider NW32H1-4P-3200A ACB, with its 65kA high breaking capacity, flexible protection settings and reliable performance, is an ideal solution for 3200A-class low-voltage distribution systems. Proper selection of trip unit and mounting type fulfills protection needs across various scenarios, ensuring safe and stable power system operation.
Schneider Air Circuit Breaker Model List & Cross-Brand Comparison (April 2026)
At a Glance
Schneider core series: MasterPact MT/MTZ (flagship), MVS (general), NW (compact)
Current range: 630A~6300A, covering low-voltage distribution to industrial main incomers
Cross-brand compatibility: Functionally interchangeable with ABB Emax, Siemens 3VA/3WT, CHINT NA1, Delixi CDW series
- Complete Schneider ACB Model List
- Flagship Series: MasterPact MT/MTZ (630A~6300A) 2026.4
| Model | Frame Current | Breaking Class | Poles | Mounting | Typical Configuration | Price (CNY) |
| MT06N1 MIC2.0 | 630A | N1 (42kA@440V) | 3P/4P | Fixed/Withdrawable | Basic three-stage protection | 8,000~12,000 |
| MT08H1 MIC5.0 | 800A | H1 (65kA@440V) | 3P/4P | Withdrawable | Earth fault + Modbus | 15,000~22,000 |
| MT10N2 MIC6.0 | 1000A | N2 (50kA@690V) | 3P/4P | Fixed/Withdrawable | Energy metering + Ethernet | 20,000~28,000 |
| MT16H1B MIC6.0 | 1600A | H1b (80kA@440V) | 3P/4P | Withdrawable | Full protection + communication | 30,000~42,000 |
| MT25H2 MIC6.0 | 2500A | H2 (100kA@440V) | 3P/4P | Withdrawable | High breaking + smart monitoring | 55,000~78,000 |
| MT32H2 MIC6.0 | 3200A | H2 (100kA@440V) | 3P/4P | Withdrawable | Main incoming dedicated | 70,000~95,000 |
| MT40H2 MIC6.0 | 4000A | H2 (85kA@690V) | 3P/4P | Withdrawable | Heavy industrial distribution | 90,000~120,000 |
| MT63H2 MIC6.0 | 6300A | H2 (70kA@690V) | 3P/4P | Withdrawable | Data centers / power plants | 150,000~220,000 |
| MTZ2 32H MIC6.0 | 3200A | H2 (100kA@440V) | 3P/4P | Withdrawable | Digital upgraded version | 85,000~110,000 |
- General Series: MVS (800A~2500A)
| Model | Rated Current | Breaking Capacity | Poles | Features | Price (CNY) |
| MVS08N MIC5.0 | 800A | N1 (42kA) | 3P/4P | Economical general-purpose | 12,000~18,000 |
| MVS12H MIC5.0 | 1250A | H1 (65kA) | 3P/4P | Standard industrial | 18,000~25,000 |
| MVS16H MIC5.0 | 1600A | H1 (65kA) | 3P/4P | High cost-performance | 22,000~30,000 |
| MVS25H MIC6.0 | 2500A | H1 (65kA) | 3P/4P | Intelligent type | 35,000~48,000 |
- Compact Series: MasterPact NW (630A~1600A)
| Model | Rated Current | Breaking Class | Poles | Size Advantage | Price (CNY) |
| NW08N1 3P | 800A | N1 (42kA) | 3P/4P | 30% smaller than MT | 10,000~15,000 |
| NW10H1 4P | 1000A | H1 (65kA) | 4P | Compact design | 13,000~18,000 |
| NW16H1 3P | 1600A | H1 (65kA) | 3P/4P | Space-constrained panels | 18,000~25,000 |
- Breaking Capacity Classes
| Class | Ultimate Breaking Capacity (Icu) | Application |
| N1 | 42kA@440V | Standard commercial buildings |
| N2 | 50kA@690V | General industrial distribution |
| H1 | 65kA@440V | Standard industrial |
| H1b | 80kA@440V | High short-circuit environments |
| H2 | 100kA@440V / 85kA@690V | Data centers, power plants |
- Trip Unit Types & Functions
| Trip Model | Protection | Communication | Application |
| MIC2.0 | L/S/I | None | Basic protection |
| MIC5.0 | L/S/I + G | Modbus-RTU | Standard industry |
| MIC6.0 | L/S/I/G + metering + logging | Modbus/TCP/Ethernet | Smart distribution |
| ET2E/ET6E | Advanced settings + remote monitoring | Multiple buses | Automation systems |
- Cross-Brand Equivalent Comparison
- International Brands
| Schneider | ABB Emax | Siemens 3VA/3WT | Functional Equivalence | Price Ratio |
| MT08H1 MIC5.0 | E1B1250 R630 PR122/P-LSI | 3VA2 800 H LSI | Fully compatible | ABB≈1.2x, Siemens≈1.3x |
| MT16H1 MIC6.0 | E2B1600 R800 PR123/P-LSI | 3WT2 1600 H LSI | Same mounting dimensions | ABB≈1.25x, Siemens≈1.35x |
| MT32H2 MIC6.0 | E3H3200 R1600 PR123/P-LSI | 3WT3 3200 H LSI | Main incoming replacement | ABB≈1.3x, Siemens≈1.4x |
| NW10H1 4P | E1D1000 R500 PR112/P-LSI | 3VA2 1000 H LSI | Compact replacement | ABB≈1.15x, Siemens≈1.25x |
- Chinese Domestic Brands (Cost-Effective Alternatives)
| Schneider | CHINT NA1 | Delixi CDW6 | People Electric DW1 | Price Ratio |
| MT08N1 MIC2.0 | NA1-1000X/3P | CDW6-1000/3P | DW1-1000/3P | Domestic ≈ 60% of Schneider |
| MT16H1 MIC5.0 | NA1-1600X/4P | CDW6-1600/4P | DW1-1600/4P | Domestic ≈ 55% of Schneider |
| MT32H2 MIC6.0 | NA1-3200X/4P | CDW6-3200/4P | DW1-3200/4P | Domestic ≈ 50% of Schneider |
| NW16H1 3P | NXA-1600/3P | CDW3-1600/3P | DW1-1600/3P | Domestic ≈ 65% of Schneider |
- Key Selection Parameters
| Item | Schneider | ABB | CHINT | Selection Tip |
| Rated Voltage | 690V AC | 690V AC | 690V AC | Match system voltage |
| Breaking Capacity | Class-marked | Same class | Same class | Based on short-circuit calculation |
| Poles | 3P/4P (N optional) | 3P/4P | 3P/4P | 4P for three-phase four-wire |
| Mounting | Fixed/Withdrawable | Fixed/Withdrawable | Fixed/Withdrawable | Withdrawable for critical loads |
| Control Supply | AC220/380V, DC110/220V | Same | Same | Match control system |
| Communication | Modbus/Ethernet | Profibus/Modbus | Modbus optional | Required for automation |
- Procurement & Replacement Notes
- Dimensional compatibility: MT series matches ABB Emax E2/E3 and CHINT NA1 for direct replacement
- Terminals: Domestic models have lower torque ratings; retorque per manufacturer spec
- Trip settings: Recalibrate L/S/I after replacement to ensure selectivity
- Accessories: Shunt trip, undervoltage trip, etc., must match or be verified compatible
- Cost advantage: Domestic brands cost roughly 50%~65% of Schneider, ideal for budget projects
- Recommended Application Scenarios
| Scenario | Recommended Schneider | Alternative | Reason |
| Factory main incoming | MT32H2 MIC6.0 | CHINT NA1-3200X | High breaking + smart protection |
| Commercial building | MT16H1 MIC5.0 | Delixi CDW6-1600 | Reliable + cost-effective |
| Data center | MT40H2 MIC6.0 | ABB E3H4000 | Ultra-high breaking + redundancy |
| Compact panel | NW10H1 4P | CHINT NXA-1000 | Small size + full functions |
