Schneider Electric MasterPact NW25H1 2500A 3-Pole Fixed ACB – 65kA, Ref. 48070
The Schneider Electric MasterPact NW25H1 48070 is a 2500A, 3-pole fixed Air Circuit Breaker (ACB) designed for high-capacity low-voltage power distribution. It provides 65kA short-circuit breaking capacity at 440V AC, supports operation up to 690V AC, and is supplied as a bare breaker frame without a trip/control unit.
Description
The Schneider Electric MasterPact NW25H1 2500A 3P Fixed ACB, Reference 48070, is a high-performance air circuit breaker frame for demanding industrial and commercial low-voltage electrical distribution applications.
Rated at 2500A at 40°C, the MasterPact NW25H1 uses Schneider Electric’s H1 performance class, providing 65kA breaking capacity at 440V AC. It is designed for high-fault-level installations where reliable short-circuit interruption and selective coordination are required.
The 48070 is a 3-pole, fixed-mount configuration and is supplied without a MicroLogic trip/control unit. This allows the protection and measurement configuration to be selected separately according to the application’s requirements. Compatible MicroLogic control-unit options should be confirmed against the exact breaker configuration before ordering.
The breaker has a 690V AC rated operational voltage, 1000V insulation voltage, and 12kV impulse withstand voltage. Its Category B classification and 65kA short-time withstand current support applications requiring coordination with downstream protection equipment.
Key Product Highlights
- 2500A rated current
- 3-pole fixed ACB
- 65kA Icu at 440V AC
- 65kA short-time withstand current
- 690V AC rated operational voltage
- 1000V insulation voltage
- 12kV impulse withstand voltage
- Category B
- Suitable for isolation
- Without trip/control unit
- IEC 60947-2 compliant
- ASTA certified
- Fixed mounting configuration
| Specification | Details |
|---|---|
| Manufacturer | Schneider Electric |
| Product Range | MasterPact NW |
| Model | MasterPact NW25H1 |
| Reference | 48070 |
| Product Type | Air Circuit Breaker / ACB Frame |
| Rated Current (In) | 2500A at 40°C |
| Number of Poles | 3P |
| Mounting | Fixed |
| Trip / Control Unit | Without control unit |
| Breaking Capacity | H1 |
| Icu | 65kA at 440V AC |
| Ics | 65kA |
| Icw | 65kA for 1s / 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 |
| Utilization Category | Category B |
| Isolation Suitability | Yes |
| Circuit Breaker CT Rating | 2500A |
| Mechanical Durability | 10,000 cycles without maintenance / 20,000 with maintenance |
| Electrical Durability | Up to 6,000 cycles, depending on utilization and voltage |
| Operating Temperature | -25°C to +70°C |
| Standard | IEC 60947-2 |
| Certification | ASTA |
| Protection Degree | IP30 |
| Environmental Compliance | Mercury Free, RoHS compliant |
| Weight | 47.251kg |
| Warranty | 18 months |
Key Features
2500A High-Current Capacity
The MasterPact NW25H1 2500A ACB is designed for high-capacity LV distribution systems, including large industrial switchboards and high-power electrical installations.
65kA Short-Circuit Breaking Capacity
The H1 version provides 65kA Icu at 440V AC, making it suitable for installations with significant prospective short-circuit currents.
3-Pole Fixed Construction
The 3P fixed ACB is intended for three-phase electrical distribution systems where a fixed installation is required.
Without Trip Unit
Reference 48070 is supplied without a control/trip unit. A compatible MicroLogic control unit can be selected separately according to the required protection, metering and communication functions.
High Voltage Rating
The breaker supports up to 690V AC, with 1000V insulation voltage and 12kV impulse withstand voltage, providing the electrical insulation capability required for demanding LV switchboard applications.
Category B Performance
The Category B design and 65kA Icw rating support short-time withstand and selectivity requirements in appropriately engineered power distribution systems.
Applications
The Schneider MasterPact NW25H1 2500A 3P Fixed ACB is suitable for:
- Main incomer protection
- Industrial LV switchboards
- Main distribution boards
- High-capacity power distribution
- Generator protection and distribution
- Transformer secondary protection
- Bus-tie and bus-section applications
- Industrial manufacturing plants
- Large commercial electrical systems
- Data center power distribution
- Infrastructure and utility installations
- High short-circuit-level installations
- Power distribution systems with parallel transformers
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