Square D KH36090 - 90 A, 3-Pole Plug-In Circuit Breaker | AmpState

Introducing the Square D KH36090 — a 90 A, 3-pole plug-in molded case circuit breaker designed to protect your panelboards and loadcenters from overcurrent and short circuits with precision and speed. Built for dependable, repeatable protection, this device is ready to streamline installation and maintenance in a variety of settings.

Why this breaker stands out

• Fast plug-in connection: Quick installation and effortless replacement means less downtime during panel upgrades or service calls.
• Thermal-magnetic trip unit: Combines thermal and magnetic sensing to deliver stable, repeatable protection for both gradual overloads and immediate short faults.
• Three-pole, 90 A design: Ideal for balanced three-phase circuits and higher-demand branch circuits found in commercial and light industrial applications.
• Molded-case reliability: Solid construction that stands up to demanding electrical environments while protecting critical load centers.
• OEM-compatible installation: Designed to be compatible with matching Square D OEM loadcenters and panelboards for seamless integration.

What it protects and where it fits

The KH36090 provides reliable branch circuit overcurrent and short-circuit protection, safeguarding wiring and connected equipment in residential, commercial, and light industrial settings. Its plug-in mounting simplifies upgrades, replacements, or panel consolidations without the need for extensive rewiring.

Ideal use scenarios

• Replacing aging breakers in existing Square D panelboards to restore protective performance and ease of maintenance.
• Upgrading service panels in small offices, storefronts, or workshops that require robust 3-phase protection.
• Integrating into new or retrofit projects where fast installation and dependable trip behavior are essential.

Specification snapshot

• Manufacturer: Square D
• Part Number: KH36090
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 90 A
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Choose the Square D KH36090 for a dependable, fast-to-install protection solution that aligns with your existing loadcenters and panelboards. Its precise thermal-magnetic protection and plug-in design reduce downtime and help keep critical electrical systems running smoothly. For projects where reliability and quick service are paramount, this 90 A, 3-pole plug-in breaker is a purpose-built fit for success.