Siemens | HFD63B110L | Circuit Breaker | 110A | 3-Pole | 600V | Bolt-On

Meet the Siemens HFD63B110L circuit breaker—a purpose-built, three-pole protection device engineered for demanding 600V, 3-phase systems. With a precise 110 A rating and bolt-on mounting, this unit is designed to deliver reliable, field-ready protection for maintenance, retrofit, and replacement projects where exact specifications matter.

Key specifications

• Amperage: 110 A
• Poles: 3-Pole
• Voltage rating: 600 V
• Mounting: Bolt-On
• Application: Maintenance, Retrofit, Replacement
• Part reference: HFD63B110L

Why this breaker stands out

The HFD63B110L is more than a drop-in replacement—it’s a deliberate upgrade for three-phase protection that aligns with Siemens’ engineering standards. Its bolt-on design simplifies field swaps in compatible panels, reducing downtime during service or upgrades. The 110 A rating strikes a balance between protecting feeders and motors while maintaining manageable current carry for common industrial loads, so you can keep processes running smoothly without over-protection that can affect performance.

Ideal use cases

• Maintaining and updating existing Siemens panels that require a 110 A, 3-pole, 600 V bolt-on breaker
• Retrofit projects where exact spec parity is essential for system coordination and safety compliance
• Replacement of aging or failed breakers in industrial control cabinets and distribution panels
• Upgrading three-phase motor circuits and feeders in manufacturing lines or commercial heavy equipment setups

Installation and compatibility notes

Before ordering, confirm fit and ratings to ensure a seamless match with your panel. The part number is the best reference for compatibility, so reference HFD63B110L when verifying the correct replacement. Plan for bolt-on mounting by following your panel’s installation guidance and use the appropriate hardware and torque specifications from the panel manufacturer to secure connections and maintain reliable protection.