Eaton LD3450Y - 450 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Eaton LD3450Y — a 450 A, 600 V, 3-pole bolt-on molded case circuit breaker built for reliable branch circuit overcurrent and short-circuit protection in panelboards and load centers. With a secure bolt-on mounting, a thermal-magnetic trip unit, and seamless compatibility with Eaton OEM load centers, this breaker is designed for demanding environments where uptime matters.

Overview

The LD3450Y delivers decisive protection for three-phase distribution networks. Its bolt-on mounting creates a rigid, vibration-resistant connection to the bus, reducing movement that can compromise performance in busy electrical rooms. The integrated thermal-magnetic trip unit combines time-delayed overload protection with instantaneous short-circuit response, delivering stable, repeatable protection across a wide range of operating conditions.

Why this breaker stands out

• Secure bolt-on mounting: A robust mechanical connection minimizes bus movement and improves reliability in panels subjected to vibration or movement.
• Thermal-magnetic trip unit: Predictable trip behavior protects circuits against nuisance trips while delivering fast, decisive disconnection during faults.
• Three-pole design: Ensures synchronized disconnection across all three phases, which is critical for balanced loads and equipment safety in commercial and light industrial applications.
• OEM compatibility: Precisely engineered to work with matching Eaton load centers and panelboards, simplifying replacement, retrofits, and new installations.
• Versatile application: Suitable for residential, commercial, and light industrial environments where dependable circuit protection is essential.

Technical specifications at a glance

• Manufacturer: Eaton
• Part number: LD3450Y
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 450 A
• Voltage rating: 600 V
• Poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

• Three‑phase commercial panelboards and distribution boards
• Light industrial service panels and motor control centers
• Upgrades or replacements in existing Eaton panel systems to restore or enhance protection
• New installations where a robust, bolt-on, three-phase breaker is required

Installation and practical tips

For best results, install the LD3450Y in compatible Eaton panelboards or load centers designed to accept this bolt-on, three-pole configuration. Follow standard electrical safety practices, ensure the power is de-energized before installation, and verify torque specifications for the mounting hardware to maintain the rigid bus connection. This unit is designed to integrate smoothly with other Eaton protective devices, providing consistent performance across your electrical distribution system.

Why choose Eaton LD3450Y for your project

If you’re designing or upgrading a distribution system that requires dependable three-phase protection with minimal downtime, the LD3450Y offers a precise, durable solution. Its combined thermal and magnetic protection reduces nuisance trips, while the bolt-on design simplifies installation and enhances long-term reliability in environments where vibration or movement is a factor. When you need a breaker you can trust to protect expensive equipment and keep business operations running, this 3-pole LD3450Y is a dependable choice.

Availability

Part of Eaton’s trusted protection lineup, the LD3450Y is manufactured for compatibility with Eaton OEM load centers and panelboards. It’s available through authorized distributors and electrical supply partners, making it straightforward to source as a direct replacement or as part of a new installation.

Secure the LD3450Y for your three-phase distribution needs today and experience reliable, steady protection that aligns with Eaton’s engineering standards and your project requirements.