Eaton LGMPS400G - 400 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Introducing the Eaton LGMPS400G — a 400 A, 600 V, 3-pole bolt-on molded case circuit breaker designed to protect branch circuits with precision and reliability in panelboards and loadcenters.

Why this breaker stands out

• Bolt-on mounting: secure, vibration-resistant bus connections that stay tight under demanding electrical conditions.
• Thermal-magnetic trip unit: combines thermal overload protection with magnetic short-circuit sensing for fast, repeatable trips and consistent protection across temperature and load variations.
• 400 A, 600 V, 3-pole capability for robust, multi-line protection in larger circuits.
• OEM-compatible: engineered to pair seamlessly with Eaton and matching OEM loadcenters and panelboards, reducing fit issues during installation or expansion.
• Versatile application: ideal for residential, commercial, and light industrial panels where dependable fault protection is essential.

What problems it solves

When overcurrent or a short circuit occurs, the LGMPS400G responds quickly to interrupt current, helping prevent insulation damage, equipment downtime, and fire risk. The bolt-on design ensures a solid, maintenance-friendly connection, while the rugged construction resists vibration and loosening in busy electrical spaces.

Practical applications and scenarios

Use this breaker as a main or feeder protection device in service panels, distribution boards, or subpanels within commercial spaces, light industrial facilities, and modern residences with demanding electrical loads. Its 400 A rating and 600 V capability support demanding motor loads, lighting circuits, and other branch circuits that require reliable, coordinated protection.

Installation tips and considerations

• Verify that your enclosure supports bolt-on molded case breakers and that bus connections are clean and torqued to specification.
• Coordinate protection with your overall electrical design to ensure proper trip settings and selectivity for safe, effective fault isolation.

The Eaton LGMPS400G is a durable, high-capacity solution for dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. For residential, commercial, and light industrial electrical systems that demand consistent performance and straightforward installation, this 3-pole bolt-on breaker delivers proven protection when it matters most.