Siemens QJH22B080 - 80 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens QJH22B080: a robust 80A, 240V, 2-pole bolt-on molded case circuit breaker built to shield your panelboards and loadcenters from overcurrent and short-circuit threats. Designed for dependable operation across residential, commercial, and light industrial environments, this breaker delivers consistent protection when it matters most—on fast-moving electrical loads and demanding duty cycles.

Why this breaker stands out

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection that stays tight over time, reducing connection drama in panels subject to vibration or movement.
• Thermal-magnetic trip unit delivers stable, repeatable protection by reacting to both sustained overcurrent and instantaneous short-circuit conditions, helping prevent nuisance trips and equipment damage.
• OEM panel compatibility is designed to pair with matching Siemens panelboards and loadcenters for straightforward substitution and reliable coordination within the protection scheme.
• Versatile 2-pole, 80A, 240V design suits a wide range of branch circuits, from main feeds to critical subcircuits, in homes, small offices, and light industrial setups.

What it protects

This molded case circuit breaker guards branch circuits against overcurrent and short-circuit events. By interrupting fault conditions quickly, it helps preserve wiring insulation, safeguard connected equipment, and reduce downstream damage in electrical installations.

Technical snapshot

• Manufacturer: Siemens
• Part Number: QJH22B080
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 80A
• Voltage Rating: 240V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

Install this breaker when upgrading or expanding a panelboard or loadcenter that requires a reliable 80-amp, 240-volt two-pole protection device. It’s well-suited for circuits feeding large appliances, HVAC equipment, water heaters, subpanels, or multi-wire branch circuits where robust protection and stable trip behavior are essential.

Installation and practical tips

To maximize performance, verify compatibility with your OEM panelboard and confirm the bolt-on mounting is correctly seated to maintain a solid, low-resistance connection. When replacing an existing breaker, align the amperage and trip characteristics with your panel’s protective coordination strategy to ensure predictable, selective tripping across the circuit layout.

Reliable, purpose-built protection for 240V systems starts with the Siemens QJH22B080—a bolt-on, 2-pole solution that combines secure mounting, precise thermal-magnetic protection, and compatibility with Siemens panel ecosystems for enduring electrical safety.