Siemens QJH23B080 - 80 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens QJH23B080, an 80A, 240V, 3-pole bolt-on molded case circuit breaker designed to be the dependable guardian of your electrical panel. It protects branch circuits from overcurrent and short circuits while delivering consistent performance in a variety of setups—from homes to light commercial spaces.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, reducing the risk of loosening and ensuring stable electrical contact in environments with movement or vibration.
• Thermal-magnetic trip unit delivers stable, repeatable protection across a range of temperatures and fault conditions, helping to minimize nuisance trips while safeguarding equipment.
• OEM-compatible design is ready for seamless integration with matching Siemens loadcenters and panelboards, simplifying installation and maintenance.
• 3-pole, 80A, 240V configuration delivers balanced protection across all three phases, ideal for circuits that require robust three-phase protection in residential, commercial, or light industrial applications.
• Versatile protection suited for residential panels, commercial distribution boards, and light industrial installations that demand reliable branch-circuit overcurrent and short-circuit protection.

Technical specifications

• Manufacturer: Siemens
• Part number: QJH23B080
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 80 A
• Voltage rating: 240 V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Use cases and practical benefits

Ideal for upgrading or servicing panels where a secure, three-phase protection solution is needed. Install this breaker in panelboards designed for Siemens components to ensure compatibility and reliable operation. In residential settings, it provides robust protection for multi-wire branch circuits; in small offices, workshops, and light industrial spaces, it safeguards motors, transformers, and equipment connected to 3-phase circuits. The bolt-on design helps technicians achieve a solid, vibration-resistant connection during service or retrofit projects, reducing the chance of intermittent faults.

Why this breaker stands out

Beyond the basic specs, the QJH23B080 is engineered for long-term reliability in real-world environments. The combination of bolt-on mounting, a thermal-magnetic trip mechanism, and Siemens OEM compatibility translates to fewer installation headaches, fewer trips due to temperature fluctuations, and a durable protection solution built to integrate seamlessly with your existing Siemens infrastructure.