Siemens | HQJ23B110HA01 | Circuit Breaker | 110A | 3-Pole | 240V | Bolt-On

Experience reliable, OEM-grade protection with the Siemens HQJ23B110HA01 circuit breaker. This 110-amp, 3-pole, 240-volt bolt-on unit is designed for maintenance, retrofit, and replacement tasks where exact specifications matter.

Key specifications

• Amperage: 110 A
• Poles: 3-Pole
• Voltage: 240 V
• Mounting: Bolt-On
• Part number: HQJ23B110HA01

Why this matters: In three-phase electrical systems, balanced protection is critical. This 3-pole design safeguards all phases (L1-L3) and provides consistent trip characteristics across a standard 240V panel. As an OEM Siemens part, it aligns with Siemens' protection coordination, helping to prevent mismatched breakers in existing panels.

What problems does it solve?

If you're upgrading older gear, performing panel retrofits, or stocking spare parts, this bolt-on breaker offers a precise, ready-to-install solution. It eliminates guesswork when replacing failed breakers and reduces downtime thanks to straightforward installation in compatible Siemens panels.

Who is this ideal for?

• Facility managers maintaining commercial or light industrial electrical rooms
• Electrical contractors performing panel retrofits or upgrades
• Maintenance teams needing reliable, OEM-compatible spares for Siemens bolt-on panels

Installation and compatibility notes

Before ordering, confirm fit and ratings. Use only in panels designed for bolt-on HQJ series breakers. The part number HQJ23B110HA01 is the most reliable reference for compatibility with your Siemens equipment. Follow standard safety practices and manufacturer torque specs during installation.

Practical tips and use cases

• Use in 3-phase motor feeders or distribution circuits where 110 A protection is appropriate
• Ideal for retrofitting older Siemens installations that require a bolt-on, 3-pole 240V breaker
• Keep a spare HQJ23B110HA01 on hand to minimize downtime during maintenance shutdowns