NT intelligent interconnection + harsh environment tolerance, NW classic reliability + AC/DC professionalism, comprehensively protect the safety of low-voltage power distribution in all scenarios. Inquire now!
| For current ratings of 1600A and below, both share a common breaking capacity system (both offer multiple levels from 42kA to 150kA, such as N1, H1, H2, L1, etc.). Simply put, NT covers the small current range of NW, but NW can be made larger. | |||||||
| Introduction to Masterpact NT and NW Series | |||||||
| Comparison Dimensions | Masterpact NT | Masterpact NW | |||||
| Product Positioning | Compact design, suitable for small to medium-sized power distribution systems with limited space. | Standard/high current type, suitable for use as main incoming line or high-capacity feeder circuit. | |||||
| Current range | 630Ato1600A | 800A to 6300A | |||||
| Breaking capacity (Icu) | 42 kA to 150 kA(At 220/415V) | 42kA to 150kA (same system as NT, but performs better under high current) | |||||
| Physical framework | 1kindCompact size, covering all currents | Three wiring layouts are available to accommodate different needs: 800-3200A, 4000A, and 6300A. | |||||
| Ease of installation | The wiring layout is simple and the design is standardized. | More flexible, supporting on-site adjustment of connection direction (horizontal/vertical/front view). | |||||
| Tripping unit | MicroLogic 2.0/5.0/6.0 | MicroLogic A/E/P/H (From basic protection to advanced power quality analysis) | |||||
| Attachment Generality | With NW seriesMost accessories are universal.Facilitates standardized management | Compatible with most accessories in the NT series | |||||
| Frame code | T-frame | W-frame / Y-frame | |||||
| Applicable Scenarios | Small and medium-sized power distribution systems | Large industrial power distribution, main incoming line | |||||
| Installation method | Fixed type, drawer type | Fixed type, drawer type | |||||
| NW Current Specifications and Models | |||||||
| Current (A) | model | Optional segmentation levels | |||||
| 800 | NW08 | N1, H1, H2, H3, L1, L1F | |||||
| 1000 | NW10 | N1, H1, H2, H3, L1, L1F | |||||
| 1200 | NW12 | N1, H1, H2, H3, L1, L1F | |||||
| 1250 | NW12 | N1, H1, H2, H3, L1, L1F | |||||
| 1600 | NW16 | N1, H1, H2, H3, L1, L1F | |||||
| 2000 | NW20 | H1, H2, H3, L1, L1F | |||||
| 2500 | NW25 | H1, H2, H3, L1, L1F | |||||
| 3200 | NW32 | H1, H2, H3, L1 | |||||
| 4000 | NW40 | H1, H2, H3, L1 | |||||
| 5000 | NW50 | H2, H3, L1 | |||||
| 6300 | NW63 | H2, H3, L1 | |||||
| Model designation: NW08 = 800A, NW16 = 1600A, NW20 = 2000A, NW32 = 3200A, NW40 = 4000A, NW63 = 6300A. The numbers in the model designation directly correspond to the rated current. | |||||||
| NW series breaking capacity rating system under IEC standards: | |||||||
| Segmentation Level Code | Breaking capacity | illustrate | |||||
| N1 | 42 kA | Standard type | |||||
| H1 | 65 kA | High performance | |||||
| H2 | 85 kA | Higher performance | |||||
| H3 | 100 kA | Top-performance | |||||
| L1 | 150 kA | Traffic limiting type | |||||
| NT Current Specifications and Models | |||||||
| Current (A) | model | Optional segmentation levels | |||||
| 630A | NT06 | N1, H, L1 | |||||
| 800A | NT08 | N1, H, L1 | |||||
| 1000A | NT10 | N1, H, L1 | |||||
| 1250A | NT12 | N1, H, L1 | |||||
| 1600A | NT16 | N1, H, L1 | |||||
| The breaking capacity rating system of the NT series under the IEC standard: | |||||||
| Level Code | Breaking capacity Icu (440V) | illustrate | |||||
| N1 | 42 kA | Standard type, basic breaking capacity | |||||
| H | 50 kA | High performance | |||||
| L1 | 65 kA | Current limiting type, higher resolution | |||||
| Positioning and Selection Logic | |||||||
| Choose NT: If your project current is 1600A or below and your distribution cabinet space is very compact, then the NT series is the ideal choice. It is one of the smallest air circuit breakers in the world, which can help you effectively reduce the size of your cabinet. | |||||||
| Choose NW: If your project current exceeds 1600A, up to 6300A, or you need to use the circuit breaker as the main incoming switch for the entire system and have higher requirements for short-time withstand and breaking capacity, then the NW series is a must-choose. | |||||||
| MicroLogic Detailed Analysis | |||||||
| 1. MicroLogic 2.0 series | |||||||
| This is the most basic electronic trip unit, providing both long-delay (L) and instantaneous (I) protection. | |||||||
| MicroLogic 2.0: Basic version, LI two-stage protection. | |||||||
| MicroLogic 2.0A: Adds an ammeter function to the basic version, allowing users to view real-time current values locally. | |||||||
| MicroLogic 2.0A: Adds ammeter and voltmeter functions to the basic version, allowing users to view real-time current values locally. | |||||||
| Common applications: Basic power distribution circuits for Masterpact NW and ComPact NS. | |||||||
| 2. MicroLogic 5.0 series | |||||||
| Introducing short-time delay (S) protection enables selective protection between upstream and downstream circuit breakers, preventing cascading tripping. | |||||||
| MicroLogic 5.0: Standard type, LSI three-stage protection. | |||||||
| MicroLogic 5.0A: Added ammeter display. | |||||||
| MicroLogic 5.0E: Added ammeter and voltmeter displays. | |||||||
| MicroLogic 5.0P: Added power measurement (kW, kVar, kWh). | |||||||
| MicroLogic 5.0H: Adds harmonic analysis (up to order 51) to the P version. | |||||||
| 3. MicroLogic 6.0 series | |||||||
| Based on the 5.0 series, ground fault protection (G) has been added, forming LSIG four-stage protection. | |||||||
| MicroLogic 6.0: LSIG four-segment protection. | |||||||
| MicroLogic 6.0A / 6.0E 6.0P / 6.0H: The functions correspond to the A/P/H suffixes of the 5.0 series, respectively, and add ground fault protection function. | |||||||
| MicroLogic Selection Recommendations | |||||||
| No suffix / Standard: Protection only, no measurement. | |||||||
| A (Ammeter): Ammeter. This is the most economical option if you need to check the current value locally. | |||||||
| (Power): Power meter. It adds comprehensive electrical energy measurement (voltage, power, energy), suitable for circuits requiring energy consumption statistics. | |||||||
| H (Harmonics): Harmonic meter. Based on P, it adds harmonic analysis and is suitable for applications with nonlinear loads such as frequency converters and UPS. | |||||||
| Protection function description: | |||||||
| L: Long delay (overload protection) | |||||||
| S: Short delay (short-circuit selective protection) | |||||||
| I: Instantaneous (Large Short Circuit Current Protection) | |||||||
| G: Ground fault protection | |||||||
| Electrical accessories: | |||||||
| Shunt coils (MX1, MX2) | |||||||
| Undervoltage coil (MN) | |||||||
| Closing coil (XF) | |||||||
| Spring-powered energy storage motor (MCH) | |||||||
| Auxiliary contact (OF), fault indication contact (SDE), position indication contact (EF) | |||||||
| Relevant Standards and Certifications | |||||||
| Standard type | Applicable Standards | ||||||
| IEC | IEC 60947-2 | ||||||
| UL | UL 489, UL 1066 | ||||||
| ANSI | ANSI C37 Certification | ||||||
| CSA | CSA C22.2 No. 5 | ||||||
| Environmental testing | IEC 68-2 series (dry and cold, dry and hot, humid and hot, salt spray) | ||||||
| Scene | Typical applications | Core Values | |||||
| Petrochemical | Power distribution for refining and chemical plants, compressors, and pump stations | 40 years of proven market reliability; modular design for easy maintenance. | |||||
| DC power distribution system | DC power supply unit, DC power distribution cabinet | Professional DC version, designed specifically for DC power supply systems. | |||||
| Urban power distribution network | 10kV substation low-voltage side outgoing lines and interconnection cabinet | High breaking capacity and long life design to meet the long-term needs of power grid assets | |||||
| Return and exchange conditions: | |||||||
| Situation | Is it possible to return or exchange it? | illustrate | |||||
| Product quality issues | Returnable | Our company will bear all costs incurred in the return or exchange process. | |||||
| Wrong model/specification sent | Returnable | Our company will bear all costs incurred in the return or exchange process. | |||||
| Customer placed an order incorrectly | Negotiation | If the package is unopened and does not affect resale, returns and exchanges can be negotiated, with the customer bearing the shipping and packaging costs. | |||||
| Customized/non-standard products | Non-refundable | Customized products are made to order and cannot be returned or exchanged without a reason. | |||||
| For clients with stable partnerships and large purchasing volumes, the following service packages are available: | |||||||
| Services | Does it contain | ||||||
| Dedicated safety stock | ✅ | ||||||
| Annual framework procurement | ✅ | ||||||
| Tiered bulk discounts | ✅ | ||||||
| Flexible payment terms support | ✅ | ||||||
| One-stop packaged procurement | ✅ | ||||||
| Rapid after-sales response | ✅ | ||||||
| Contact information: | |||||||
1. Who are we?
We are Wenzhou Guotuo Electric Co., Ltd., a leading partner of leading companies such as Schneider Electric, ABB, and Siemens, specializing in the sales of power distribution and industrial control products. We not only guarantee the authenticity of our products but also offer highly competitive prices.
2. Are you a distributor?
Yes, we are a distributor for Schneider Electric and ABB, and can provide proof of authenticity and certificate of origin.
3. Why should you buy from us instead of other suppliers?
Because we offer genuine products, competitive prices, and ample stock.
4. How do we ensure quality?
We provide genuine original products and offer a two-year warranty.
5. When will I receive a quote and detailed information after submitting an inquiry?
We will reply to your message within 12 hours.
6. What services can we provide?
We can provide you with the following services: product consultation, product quotation, shipping quotation, answering your questions, order tracking, and after-sales service support.
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