Siemens | JXD23B300L | Circuit Breaker | 300A | 3-Pole | 240V

Siemens JXD23B300L Circuit Breaker — a precise, heavy-duty protection solution for commercial and industrial power systems. This 300A, 3-pole unit operates at 240V and is ideal for maintenance, retrofit, and replacement projects where exact specifications are non-negotiable.

• Exact reference part number: JXD23B300L provides unambiguous compatibility to ensure you’re ordering the right component for your panel.
• Current and configuration: 300A rating with 3 poles supports three-phase distribution for high-load circuits.
• Rated voltage: 240V, suitable for standard commercial/industrial electrical installations.
• Brand-aligned reliability: Siemens engineering means consistent trip characteristics and mechanical fit with Siemens panels and accessories.
• Ordering confidence: Confirm fit and ratings before ordering; using the exact part number is the best compatibility reference.

What problems does this solve?

When your system demands robust overcurrent protection for three-phase loads, the JXD23B300L ensures reliable shutoff under fault conditions, helping to protect wiring, equipment, and personnel. It’s the practical choice for replacing worn breakers in mid-to-large scale electrical setups without guessing on compatibility.

Ideal use cases

• Repairs or upgrades in facilities with Siemens equipment requiring a 300A, 3-pole, 240V breaker.
• Retrofits where panel updates call for exact spec replacements to maintain safety and performance.
• Maintenance outages where quick, accurate part identification minimizes downtime.

Installation and care tips

Plan for power shutdowns and follow all safety protocols. Verify the panel’s rating and the breaker’s trip curve to match your protection needs. Keep the original part number handy during ordering to avoid mismatches.