Schneider ACTI9 - 100A, 4-Pole, Miniature Circuit Breaker (MCB)

Meet the Schneider ACTI9 100A 4-Pole Miniature Circuit Breaker (MCB) — a robust protection solution built for demanding electrical systems. With a 100A rating and a 4-pole configuration, this MCB delivers dependable overcurrent protection across all phases, helping keep distribution panels and motor control centers safe, smooth, and downtime-free.

What makes this ACTI9 MCB special

• 100A current rating provides reliable protection for main and branch circuits in industrial, commercial, and OEM applications.
• 4-pole design supports 3-phase systems with a neutral, ensuring all conductors trip together for safe, coordinated shutdowns.
• Versatile integration designed for use in panelboards, switchboards, and control panels where space and reliability matter.
• Consistent, predictable tripping minimizes electrical damage and reduces downtime after an overload or fault.
• OEM-friendly and maintenance-conscious part of Schneider’s ACTI9 lineage, enabling straightforward replacement and system-wide compatibility.

Who benefits from this MCB

Ideal for facilities and equipment where robust overcurrent protection is critical. Use it in:

• Industrial power distribution panels and motor control centers needing reliable three-phase protection with a neutral
• Commercial electrical installations that require compact, durable circuit protection
• Original Equipment Manufacturer (OEM) applications where dependable protection and quick integration matter

How it solves common problems

• Overload and short-circuit protection stops faults before they cascade, safeguarding wiring and components.
• Coordinated phase protection with a 4-pole design ensures simultaneous disconnection of all conductors, reducing arc risk and equipment damage.
• Simple maintenance and parts compatibility aligns with Schneider ACTI9 family, making stocking and replacement straightforward for service teams.

Practical tips for deployment

• Pair this 4-pole MCB with compatible ACTI9 accessories to customize protection schemes for complex motor circuits and control panels.
• Plan layout in panelboards to ensure easy access for testing and replacement, minimizing downtime during maintenance.
• Use in environments where consistent, repeatable performance under fault conditions is essential to protect downstream devices and wiring.