Schneider Electric MasterPact NW20H1 2000A 4-Pole Fixed ACB – 65kA, Without Trip Unit
The Schneider Electric MasterPact NW20H1 48064 is a 2000A 4-pole fixed Air Circuit Breaker with 65kA breaking capacity at 440V AC, rated up to 690V AC and supplied without a trip/control unit. It is designed for high-capacity LV power distribution and protection applications.
Description
The Schneider Electric MasterPact NW20H1 2000A 4-Pole Fixed ACB, Reference 48064, is a high-capacity Air Circuit Breaker (ACB) designed for protection and isolation in low-voltage power distribution systems. It features a 2000A rated current, 4-pole fixed construction, and H1 performance class with a 65kA ultimate short-circuit breaking capacity at 440V AC.
The MasterPact NW20H1 is rated for operation up to 690V AC at 50/60Hz and provides 65kA Ics, matching its Icu rating across the specified voltage range. Its Category B classification and 65kA short-time withstand current for 1 second make it suitable for applications where selectivity and short-time withstand capability are important.
Reference 48064 is supplied without a control/trip unit, allowing a suitable Schneider Electric MicroLogic protection unit to be selected separately according to the required protection and monitoring functions. The breaker has a left-side neutral position, fixed mounting, push-button operation and is suitable for isolation according to IEC 60947-2.
With its high current rating, robust short-circuit performance and fixed installation format, the Schneider MasterPact NW20H1 2000A ACB is suitable for large industrial switchboards, commercial power distribution systems, main incomers, transformer feeders and other high-capacity LV electrical installations.
| Specification | Details |
|---|---|
| Manufacturer | Schneider Electric |
| Product Range | MasterPact NW |
| Model | MasterPact NW20H1 |
| Reference | 48064 |
| Product Type | Air Circuit Breaker / Basic Frame |
| Rated Current (In) | 2000A at 40°C |
| Number of Poles | 4P |
| Mounting | Fixed |
| Control / Trip Unit | Without control unit |
| Performance Class | H1 |
| Icu | 65kA at 220/415V, 440V, 525V and 690V AC |
| Ics | 65kA at 220/415V, 440V, 525V and 690V AC |
| Icw | 65kA for 1s; 36kA for 3s |
| Icm | 143kA |
| Rated Operational Voltage (Ue) | 690V AC, 50/60Hz |
| Rated Insulation Voltage (Ui) | 1000V AC |
| Impulse Withstand Voltage (Uimp) | 12kV |
| Rated Frequency | 50/60Hz |
| Network Type | AC |
| Selectivity Category | Category B |
| Isolation Suitability | Yes, according to IEC 60947-2 |
| Neutral Position | Left |
| Control Type | Push-button |
| Circuit Breaker CT Rating | 2000A |
| Sensor Rating | 1000A / 2000A |
| Connection Pitch | 115mm |
| Maximum Breaking Time | 25ms |
| Maximum Closing Response Time | 70ms |
| Power Dissipation | 250W |
| Mechanical Durability | 10,000 cycles without maintenance / 20,000 with maintenance |
| Electrical Durability | Up to 8,000 cycles at 440V AC, depending on utilization |
| Dimensions (H × W × D) | 352 × 537 × 297mm |
| Operating Temperature | -25°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Standard | IEC 60947-2 |
| Certification | ASTA |
| Protection Type | Without protection unit |
| Environmental Compliance | Mercury Free, RoHS compliant |
Key Features
- 2000A rated current for high-capacity LV distribution systems.
- 4-pole fixed ACB for three-phase four-wire electrical distribution.
- 65kA Icu at 440V AC for high-level short-circuit interruption.
- 65kA Ics provides service breaking capacity equal to the ultimate breaking capacity.
- 65kA Icw for 1 second supports selective coordination in appropriately designed distribution systems.
- 690V AC rated operational voltage for demanding low-voltage applications.
- 1000V insulation voltage and 12kV impulse withstand voltage.
- Category B selectivity classification.
- Without trip/control unit, allowing the protection configuration to be selected separately.
- Fixed mounting for permanent switchboard installations.
- Suitable for isolation according to IEC 60947-2.
- Robust MasterPact NW platform for industrial and commercial power distribution.
Applications
The Schneider MasterPact NW20H1 2000A 4P Fixed ACB is suitable for:
- Main incomer protection
- LV main distribution boards
- Industrial switchboards
- Commercial electrical distribution
- Transformer secondary protection
- Generator incomer protection
- Main and sub-main feeders
- Bus-section and bus-coupler systems
- Large commercial buildings
- Industrial manufacturing facilities
- Critical power distribution
- High-capacity electrical infrastructure
- Power distribution systems requiring high short-circuit protection
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