Siemens HQR23B100H - 100 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Siemens HQR23B100H is a 100A, 240V, 3-pole bolt-on molded case circuit breaker engineered for durable branch circuit protection in panelboards and load centers. Built to handle the demands of residential, commercial, and light industrial environments, this unit delivers reliable overcurrent and short-circuit protection when it matters most.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, reducing loosening and maintaining consistent electrical performance in powered panels.
• Thermal-magnetic trip unit delivers stable, repeatable protection across a range of loads and temperature conditions, helping prevent nuisance trips while swiftly interrupting fault currents when needed.
• OEM-compatible design is engineered to pair with matching Siemens OEM load centers and panelboards, ensuring proper fit, normal operation, and straightforward installation.
• Versatile application suited for residential, commercial, and light industrial applications where dependable 100A protection at 240V is required.

Key specifications at a glance

• Manufacturer: Siemens
• Part Number: HQR23B100H
• Type: Thermal-magnetic molded case circuit breaker (MCCB)
• Amperage Rating: 100 A
• Voltage Rating: 240 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Why choose the Siemens HQR23B100H over generic breakers? Its bolt-on design minimizes connection-related issues in busy panels, while the thermal-magnetic trip mechanism provides precise fault detection and reliable disconnection, helping to protect wiring, downstream devices, and overall system safety. When upgrading or replacing a panel’s protection, this unit’s compatibility with Siemens OEM panels reduces the risk of misfit parts and ensures seamless performance.

Ideal for professionals and serious do-it-yourselfers who value long-term reliability and clear protection boundaries in electrical installations. Whether you’re updating a residential service panel, outfitting a small commercial load center, or provisioning a light industrial distribution system, the HQR23B100H delivers predictable protection, easy integration, and the peace of mind that comes with Siemens engineering.