Schneider Electric NS100N-100A-3P 100A 3-Pole 240 V Circuit Breaker

Meet the Schneider Electric NS100N-100A-3P, a purpose-built 3-pole circuit breaker engineered to shield your 3-phase 240 V electrical systems from overcurrent events. With a precise 100 A rating, this NS-series breaker delivers dependable protection for feeders and equipment in commercial, industrial, and data-center environments, keeping critical systems running smoothly and safely.

Key features and why it matters

• Current rating: 100 A — a clean, scalable solution for protection of major 3-phase loads without overtripping on normal startup surges.
• Poles: 3-pole configuration — ensures simultaneous isolation of all three phases, preventing phase imbalance and protecting equipment from uneven current.
• Voltage rating: 240 V — designed for standard 3-phase distribution, aligning with typical commercial/industrial power architectures.
• Part number: NS100N-100A-3P — a direct-fit, Schneider Electric-approved device that integrates seamlessly with Schneider panels and accessories.

What problems does it solve?

When lifting heavy, three-phase loads such as motors, compressors, fans, and HVAC units, the risk of damaging insulation or triggering unexpected downtime rises without reliable protection. This 3-pole breaker provides coordinated disconnection across all phases at the exact current threshold, helping to:

• Prevent short circuits and overloads from cascading into sensitive equipment.
• Minimize equipment damage and downtime by interrupting supply uniformly across phases.
• Streamline panel design and maintenance with a single, integrated device for 3-phase protection.

Ideal use cases

Best suited for distribution panels in commercial and light-industrial settings where 3-phase 240 V circuits are standard. Suitable for protecting feeders to large motors, pumps, HVAC systems, and other three-phase equipment, as well as serving as a main or feeder protective device within Schneider Electric-compatible panels.

Compatibility and installation tips

• Install in Schneider Electric panelboards and enclosures designed for NS-series breakers to ensure reliable mechanical fit and electrical performance.
• Verify conductor sizing and torque specifications per local electrical codes and the panel’s installation manual to maintain a solid, safe connection.
• Use as a coordinated protection solution for 3-phase circuits to maintain balance and predictable shutdown behavior during fault events.

Why choose this NS100N-100A-3P breaker?

This Schneider Electric NS series device combines straightforward protection with dependable performance for 3-phase 240 V systems. By consolidating phase protection into a single 3-pole unit, you reduce wiring complexity and simplify diagnostics, all while aligning with Schneider Electric’s trusted ecosystem for panels, accessories, and support. For engineers and technicians who prioritize reliability, compatibility, and clear protection boundaries in 3-phase applications, this 100 A, 3-pole breaker is a precise, practical choice.