Square D JGL36250U43X 250A 3-Pole 600 V Circuit Breaker

Square D JGL36250U43X is a 250 A, 3-pole, 600 V circuit breaker built to safeguard demanding electrical feeders and equipment. As part of Square D’s trusted JGL lineup, this unit delivers dependable overcurrent protection for three-phase power in commercial and industrial environments.

Key specifications

• Current rating: 250 A
• Poles: 3
• Voltage rating: 600 V
• Part number: JGL36250U43X

Ideal use cases

Perfect for three-phase main feeders, service disconnects, and machine or panel-board protection in factories, warehouses, data centers, and other facilities that rely on higher-current three-phase distribution. The 600 V rating makes it suitable for industrial panels and higher-voltage distribution environments where reliable interruption is essential to prevent equipment damage and downtime.

Why this model stands out

Choosing the JGL36250U43X means opting for a rugged, purpose-built solution from Square D. Its three-pole configuration delivers balanced protection across all phases, helping maintain system stability during fault conditions. The part number—JGL36250U43X—signifies a precise fit for applications requiring 250 A capacity with 600 V protection, reducing ambiguity during panel upgrades or replacements. Built by Square D, it carries a reputation for dependable performance in challenging industrial settings.

Practical installation and maintenance tips

• Confirm panel compatibility with JGL-series breakers and follow all mounting specifications for secure installation.
• Use as a main disconnect or branch-circuit protection in three-phase systems up to 600 V, as appropriate for your panel design.
• Regularly inspect the breaker for signs of wear, test trip functionality, and keep the surrounding area free of moisture and dust to ensure long-term reliability.