Siemens HLMXD63B500 - 500 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Siemens HLMXD63B500 is a rugged, 3-pole bolt-on molded case circuit breaker engineered to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. With a 500 A rating and a 600 V maximum, this unit is purpose-built for demanding electrical distributions where stability and reliability matter most.

Secure, vibration-resistant protection you can trust

• Bolt-on mounting provides a rigid, secure bus connection that resists vibration and ensures consistent electrical contact over time.
• Thermal-magnetic trip unit delivers stable, repeatable protection by responding to both overcurrent and short-circuit conditions, helping to minimize nuisance trips and protect upstream equipment.
• OEM-compatible design is tailored to work with matching Siemens panelboards and loadcenters, helping maintain system integrity and ease of installation.
• Versatile applications suited for residential, commercial, and light industrial environments where reliable distribution protection is essential.

Why this 3-pole breaker makes a difference

When your panelboard or loadcenter serves multiple circuits or feeds three-phase equipment, the HLMXD63B500 acts as a precise guardian for the most critical lines. Its bolt-on construction reduces the risk of loose connections in environments with vibration or movement, while the thermal-magnetic trip unit provides dependable coordination with other protective devices in the same distribution system.

Ideal use scenarios

• Upgrading or replacing aging bolt-on breakers in existing Siemens panelboards and loadcenters
• Three-phase distribution points in commercial spaces, light industrial facilities, or generator-backed systems
• Branch circuit protection where a robust, high-current disconnect is required to safeguard wiring, feeders, and downstream equipment

Technical specifications

• Manufacturer: Siemens
• Part Number: HLMXD63B500
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 500 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical guidance for installation and standout value

Choose the Siemens HLMXD63B500 when you need a durable, high-current protection solution that aligns with the rest of your Siemens panel ecosystem. Its bolt-on design simplifies installation in compatible enclosures and helps ensure a solid, long-lasting connection in environments where vibration or movement is a concern. By integrating this breaker into your distribution scheme, you gain predictable protection performance across your 3-phase or high-current circuits, with compatibility that supports streamlined maintenance and future upgrades.

Available through AmpState, this 500 A, 600 V, 3-pole bolt-on MCCB is a purpose-built choice for professionals who value robust protection, dependable operation, and seamless compatibility with Siemens panelboards and loadcenters.