Square D | KHL36090 | Circuit Breaker | 90A | 3-Pole | 600V

The Square D KHL36090 circuit breaker is a purpose-built solution for safeguarding three-phase, 600V electrical systems. Designed with maintenance, retrofit, and replacement projects in mind, this 90A, 3-pole unit delivers dependable interruption when faults occur, helping keep equipment and personnel safe while minimizing downtime.

Key specifications at a glance

• Amperage: 90A
• Poles: 3-Pole
• Voltage: 600V
• Part number: KHL36090
• Type: Circuit Breaker (Square D)

What sets the KHL36090 apart

• Exact compatibility reference: The part number KHL36090 is the most reliable reference when matching breakers to your panel or distribution setup. Always confirm fit and ratings before ordering to ensure seamless installation.
• Three-pole protection for 3-phase systems: By interrupting all three conductors simultaneously, this unit reduces imbalance risk and limits arc exposure, a critical factor in industrial and commercial environments.
• Designed for retrofit and panel upgrades: Built to slot into Square D panel families that accept KHL-series devices, simplifying replacements and refurbishments without extensive rewiring.
• Robust construction with proven reliability: Engineered for consistent performance in everyday operational conditions, delivering dependable overcurrent protection to safeguard downstream equipment.

Ideal applications and use cases

• Maintenance or retrofit projects in manufacturing floors, production lines, and process equipment where a 90A, 3-pole, 600V breaker is required.
• Replacement of aging or failed breakers in existing Square D panelboards that specify KHL-series devices.
• New installations in facilities with three-phase 600V distribution feeders needing reliable fault interruption and quick restoration.
• Protecting motors, transformers, and other high-demand loads that operate on 3-phase power, helping to prevent cascading outages from a single fault.

Practical guidance for purchasing and installation

• Before ordering, verify that your panel accepts KHL-series breakers and that the 90A 3-pole 600V rating aligns with the circuit you intend to protect.
• Keep the part number KHL36090 on hand as the definitive reference for compatibility with your Square D panel and configuration.
• Follow standard lockout/tagout procedures during installation, and ensure proper torque on terminal connections to maintain reliable contacts and trip performance.
• Label the protective device clearly in the panel schedule to aid future maintenance and inspections.

With the Square D KHL36090, you’re choosing a trusted, three-phase protection solution that aligns with real-world maintenance needs and retrofit projects. Its 90A rating and 3-pole design provide targeted protection for 600V systems, helping you minimize downtime and extend the life of critical equipment.