General Electric C440LSIR 4000A 3-Pole Circuit Breaker

Meet the General Electric C440LSIR 4000A 3-Pole Circuit Breaker — a high-capacity protection device designed for demanding industrial electrical systems. With a 4000-ampere current rating and a three-pole configuration, this GE breaker delivers reliable, coordinated protection for three-phase power feeds, helping to safeguard motors, feeders, and distribution equipment from overloads and short circuits.

Why this 3-Pole GE breaker stands out

• High-current protection: 4000 A rating provides robust protection for heavy-duty applications, reducing the risk of equipment damage during fault conditions.
• Three-phase reliability: The 3-pole design ensures simultaneous disconnection of all phases, which is essential for balanced protection in industrial power systems.
• Exact compatibility: Part number C440LSIR ensures proper fit and function within GE panels and systems designed to accept this model.
• Streamlined maintenance: With a GE-engineered form factor, this breaker integrates smoothly into existing GE-based electrical distributions, simplifying replacement and servicing tasks.

Ideal use cases

• Industrial facilities with large motor loads and heavy feeders that require dependable three-phase protection.
• Power distribution panels in manufacturing lines, processing plants, and utility rooms where space and reliability matter.
• Systems needing a single, centralized protection device to guard multiple three-phase circuits without intricate interconnections.

Specifications at a glance

• Current rating: 4000 A
• Poles: 3
• Part number: C440LSIR
• Manufacturer: General Electric (GE)

Practical considerations for purchase and installation

Before you buy, confirm that your panel or system is designed to accommodate the C440LSIR 3-Pole configuration and GE’s mounting footprint. This model is tailored for high-current, three-phase protection, so ensure your electrical design calls for a 4000 A device and that the installation environment matches standard industrial conditions. For technicians, this part represents a straightforward replacement within GE ecosystems, helping to minimize downtime during maintenance or upgrades.

What problems it solves

By providing a coordinated, three-phase shutoff under overload or fault conditions, the C440LSIR helps protect expensive motors and feeders from damage, reduce arc exposure, and maintain safer, more reliable power distribution in demanding environments. It’s a practical, purpose-built solution when downtime is costly and equipment demands robust protective coordination.