Siemens | JXD23M300 | Circuit Breaker | 300A | 3-Pole | 240V

Introducing the Siemens JXD23M300 Circuit Breaker — a purpose-built protection device engineered for demanding, three-phase 240V systems. With a robust 300A rating and 3-pole configuration, this breaker is designed to safeguard large feeders, motors, and critical loads in commercial and industrial environments.

This unit is optimized for maintenance, retrofit, and replacement projects where exact specifications matter. The JXD23M300 ensures compatibility when upgrading or refreshing a panel’s protection scheme, delivering dependable interruption performance when it matters most.

Key specifications at a glance

• Amperage: 300A
• Poles: 3-Pole
• Voltage: 240V
• Part number: JXD23M300 — the best reference for compatibility

Why this Siemens 3-pole, 240V breaker stands out

Siemens engineering delivers precise, predictable protection for three-phase circuits. The JXD23M300 is designed to minimize nuisance trips while reliably interrupting fault currents. Its 300A capacity is well-suited for feeders to large motors, HVAC equipment, transformers, and other high-load components, helping protect conductors and downstream devices without compromising system uptime.

Ideal use cases

• Maintenance and retrofit projects where exact 300A, 3-pole, 240V protection is required
• Replacement in legacy panels that specify JXD23M300-compatible breakers
• Upgrading protection schemes in commercial buildings, data centers, and light industrial facilities
• Spare-part inventory for planned maintenance to minimize downtime

Installation and compatibility considerations

• Always confirm fit and ratings before ordering — the part number JXD23M300 is the most reliable reference for compatibility.
• Match amperage, voltage, and pole configuration to your panel’s specifications to ensure proper protection and seating.
• Verify bus-bar interface and mounting style align with your existing distribution panel to avoid fit issues during replacement.

Whether you’re retrofitting a legacy system, replacing a worn-out breaker, or building out a new protection strategy, the Siemens JXD23M300 delivers dependable performance and clear, actionable compatibility guidance. Add this essential 300A, 3-pole, 240V circuit breaker to your cart and ensure robust protection for your critical electrical loads.