Eaton LGH340036W - 400 A, 3-Pole Bolt-On Circuit Breaker | AmpState

Eaton LGH340036W is a 400A, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built to endure demanding electrical environments, this breaker provides robust protection where it matters most—keeping power distribution safe and reliable in both new installations and upgrades.

• Secure bolt-on mounting: a rigid, vibration-resistant bus connection that stays tight under heavy loads and challenging conditions, reducing the chance of loose connections and nuisance trips.
• Thermal-magnetic trip unit: delivers stable, repeatable protection by combining thermal sensing for overload with magnetic trip for instantaneous short-circuit response, helping protect circuits before damage occurs.
• OEM-compatible design: compatible with matching OEM load centers and panelboards, enabling straightforward installation without the need for adapters or modifications.
• Versatile application: suitable for residential, commercial, and light industrial environments where high-current protection and reliability are essential.
• 3-pole configuration: ensures simultaneous disconnection of all phases, improving safety and maintaining phase balance in three-phase systems.
• High-current capability: 400A rating makes it ideal for main feeders and large branch circuits in demanding electrical layouts.

Use cases and practical benefits

Ideal for upgrading aging panelboards or load centers that require a bolt-on, high-current solution. Use this breaker to protect sizable feeders, such as HVAC gear, large pumps, or distribution circuits in commercial spaces and light industrial facilities. Its bolt-on design simplifies field replacement and maintenance, minimizing downtime while delivering consistent protection performance over the life of the installation.

Technical snapshot

• Manufacturer: Eaton
• Part Number: LGH340036W
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 400A
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Choose the Eaton LGH340036W when you need a durable, high-current, bolt-on solution that aligns with your existing Eaton panelboards and load centers. It’s engineered to deliver dependable protection, reduce installation time, and support resilient power distribution in diverse settings.