Square D NW20H 2000A 3P LV

The Square D NW20H 2000A 3‑pole low‑voltage air circuit breaker is a rugged, high‑performance protection device engineered to deliver dependable power distribution and fault protection in industrial, commercial, and infrastructure electrical systems. As part of the MasterPact NW series by Schneider Electric Square D, the NW20H frame combines proven mechanical design with advanced electronic protection options, catering to applications where reliability, safety, and uptime are critical.

High‑Capacity Protection
Rated for 2000 A continuous current and designed to operate in low‑voltage networks up to 690 V AC, the MasterPact NW20H breaker provides superior protection against overloads, short circuits, and electrical faults. Its robust construction and high interrupting capacity make it suitable for main feeders, branch circuits, motor loads, and critical power distribution panels in heavy‑duty environments.

Advanced Protection and Coordination
The Square D NW20H breaker can be paired with Micrologic electronic trip units, which offer comprehensive protection functions including long‑time, short‑time, instantaneous, and optional ground‑fault detection. These trip units enable engineers to fine‑tune protection parameters for selective coordination with upstream and downstream devices, minimizing nuisance trips while enhancing system continuity and safety. Some configurations also support communication and diagnostics for integration with energy management systems.

Modular and Service‑Friendly Design
The breaker’s modular design allows easy installation, inspection, and maintenance. Its compact 3‑pole configuration and flexible mounting options suit switchboards, motor control centers, and distribution switchgear. With accessory support—including auxiliary contacts, shunt trips, undervoltage releases, and communication modules—the Square D NW20H can be customized to meet unique power system requirements.

Built for Reliability
Manufactured to meet international standards (such as IEC 60947‑2 / ANSI), the MasterPact NW series incorporates features that enhance operational reliability and service life, such as strong arc fault containment, high mechanical endurance, and thermal stability. These qualities make the Square D NW20H 2000A breaker a trusted choice for demanding industrial plants, large commercial buildings, data centers, and infrastructure facilities where dependable performance and system protection are paramount.

Square D NW20H 2000A 3-Pole LV Power Case Circuit Breaker, Integrated Micrologic trip unit (if applicable), Terminal covers, Racking mechanism (if draw-out version), Control wiring harness, Auxiliary and alarm switches (if included), Mounting hardware, User manual and wiring diagram, Test report or calibration sheet (if applicable), Safety and compliance documentation, Manufacturer warranty card, Original Square D packaging