Siemens | MXD63A800L | Circuit Breaker | 800A | 3-Pole | 600V | Bolt-On

Trusted Siemens protection for demanding electrical distributions: the MXD63A800L three-pole bolt-on circuit breaker is designed to meet replacement, retrofit, and maintenance needs where exact specs matter. This 800-amp unit delivers robust overcurrent protection in a compact bolt-on form factor, rated for up to 600 volts, making it a reliable choice for industrial panels and service disconnects.

• Amperage: 800A
• Poles: 3-Pole
• Voltage: 600V
• Mounting: Bolt-On
• Reference: Part number MXD63A800L

What makes this Siemens breaker stand out? It’s purpose-built for installations where you need exact matching specs to restore original protection schemes without compromising panel compatibility. The 3-pole design ensures simultaneous interruption across all live legs, protecting equipment and operators in three-phase systems. The bolt-on mounting provides a secure, vibration-resistant connection that’s easier to service in congested panels compared with some plug-in or clamp-style alternatives.

Ideal use cases include panel upgrades, equipment retrofits, and spare parts stock for ongoing maintenance programs. If you’re replacing an older Siemens breaker or refreshing a panel to meet updated current and voltage requirements, MXD63A800L is designed to align with Siemens’ engineering standards and connected protection logic.

Important note: Always confirm fit and ratings before ordering. The part number MXD63A800L is the best reference for compatibility, so cross-check this exact model with your panel’s documentation and bus configuration to ensure a seamless swap.

Practical tips for a smooth installation: have your panel schema ready, verify the panel’s rated current destinations match the 800A rating, and use proper torque specs for bolt-on mounting to prevent loose connections. For ongoing reliability, pair this breaker with coordinated protective devices and follow Siemens installation guidelines for safe operation in 600V systems.