Eaton LD3300X - 300 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Eaton LD3300X is a rugged, 3-pole bolt-on molded case circuit breaker designed for dependable branch circuit protection in panelboards and load centers. With its bolt-on mounting, this unit delivers a rigid, vibration-resistant bus connection that stays secure even in demanding electrical environments.

Engineered for precise protection, the thermal-magnetic trip unit delivers stable, repeatable performance by responding to overloads with heat and to short circuits with fast magnetic tripping. This means fewer nuisance trips and faster fault clearance, helping protect both conductors and connected equipment in your system.

Designed for compatibility, the LD3300X is compatible with matching OEM load centers and panelboards, making it a reliable choice when upgrading or expanding existing Eaton-based electrical ensembles. Its 3-pole configuration is ideal for three-phase circuits, while the 300A amperage rating and 600V maximum voltage positioning suit a range of applications from mid-sized commercial to light industrial settings.

Why this matters for your projects

• Secure bolt-on mounting provides a solid, vibration-resistant connection that minimizes bus bar loosening in installations subject to movement or vibration.
• Thermal-magnetic protection combines overload and short-circuit protection in a single device, simplifying panel design and improving protection reliability.
• Three-phase readiness with 3 poles ensures comprehensive protection across all conductors in a 3-phase system.
• High-capacity duty at 300A handles substantial branch circuits without frequent replacements or upgrades.
• Versatile application suited for residential, commercial, and light industrial environments where panelboards and load centers require dependable, OEM-compatible protection.

Technical snapshot

• Manufacturer: Eaton
• Part Number: LD3300X
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 300A
• Voltage Rating: 600V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use scenarios

Install the LD3300X in service panels or distribution panels that require robust 3-phase protection for commercial spaces, light industrial equipment, or large residential installations. It’s particularly advantageous in environments where panel vibrations are common, or where a secure, OEM-matched solution is preferred for streamlined maintenance and compatibility.

Installation and compatibility notes

Choose the LD3300X when you need a bolt-on solution that aligns with Eaton’s panelboard ecosystems. Its design emphasizes a tight, dependable bus connection and straightforward replacement in compatible panelboards and load centers, helping you maintain electrical safety standards with minimal downtime.

Ready to upgrade or expand your electrical protection? The Eaton LD3300X delivers heavy-duty, reliable branch-circuit protection with a secure mounting approach, precise thermal-magnetic trip performance, and OEM-compatible integration for peace of mind in residential, commercial, and light industrial applications.