General Electric SGLL3604L4X6 400A 3-Pole 600 V Circuit Breaker

General Electric SGLL3604L4X6 400A 3-Pole 600 V Circuit Breaker is engineered to deliver reliable, high-current protection for demanding three-phase installations. Designed for robust performance in industrial and commercial electrical systems, this GE breaker helps keep your equipment, panels, and people safe by interrupting faults quickly and precisely.

Key specs at a glance

• Current rating: 400 A
• Poles: 3-pole for balanced three-phase protection
• Voltage rating: 600 V
• Part Number: SGLL3604L4X6

Why this three-pole, 600 V breaker matters

In three-phase power systems, a 3-pole circuit breaker provides synchronized interruption across all phases, reducing the risk of unbalanced loads and equipment damage during faults. The SGLL3604L4X6 is purpose-built for high-current environments where reliable performance is non-negotiable—from motor drives and compressors to large HVAC units and distribution panels. With a 400 A rating, it’s suited for heavy-duty feeders and main protection in mid- to large-size installations, offering clear trip signals and swift fault clearance when anomalies occur.

Ideal applications and use cases

• Industrial facilities and manufacturing lines with high-current motors
• Commercial electrical distribution panels powering large equipment
• Data centers or server rooms with substantial, centralized power requirements
• Electrical service entrances and feeder circuits in facilities using three-phase 600 V systems

What makes this GE breaker stand out

Unlike smaller or single-phase devices, the SGLL3604L4X6 is tailored for demanding three-phase circuits, providing coordinated protection across all phases. Its 600 V rating accommodates many industrial and commercial electrical systems, while the 400 A capacity supports sizeable loads without frequent tripping. The result is steadier power delivery, minimized nuisance trips, and improved uptime for critical equipment.

Installation and practical considerations

For best results, install in compatible GE panels and connect according to electrical codes and safety standards. Verify your bus arrangement and conductor sizing align with the 400 A rating, and ensure that the enclosure and wiring methods comply with local regulations. If you’re upgrading from a lower-current device, plan for appropriate wiring upgrades and panel adjustments to accommodate the higher protection level and three-phase configuration.

Fast, reliable protection you can trust

With the General Electric SGLL3604L4X6, you’re choosing a purpose-built solution for safeguarding high-current, three-phase systems. It delivers decisive fault interruption, helping to prevent equipment damage, reduce downtime, and maintain safer, more efficient electrical operations across your facility.