Siemens QJ22B100H - 100 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Introducing the Siemens QJ22B100H — a dependable, high-performance 100 A, 240 V, 2-pole bolt-on molded case circuit breaker designed to safeguard your electrical system with precision. Built for residential, commercial, and light industrial panelboards and load centers, this unit delivers reliable branch circuit overcurrent and short-circuit protection where it matters most.

• Secure bolt-on mounting: A rigid, vibration-resistant bus connection minimizes movement and loosening over time, helping maintain consistent protection and reducing maintenance needs in demanding environments.
• Thermal-magnetic trip unit: Combines fast short-circuit response with stable, repeatable overcurrent protection, adapting to load conditions to prevent nuisance trips while staying ready for true faults.
• OEM compatibility: Designed to pair with matching Siemens load centers and panelboards, ensuring a clean fit and seamless integration into existing electrical systems.
• Versatile use cases: Ideal for new installations, panelboard upgrades, service upgrades, and retrofit projects across residential, commercial, and light industrial settings.

Technical snapshot

• Manufacturer: Siemens
• Part number: QJ22B100H
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 100 A
• Voltage rating: 240 V
• Number of poles: 2
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Why choose this Siemens QJ2 series breaker? Its bolt-on design ensures a solid, vibration-resistant connection that stands up to panel enclosure movement and building vibrations, while the thermal-magnetic protection curve delivers consistent performance across varying loads. For installers and facility managers, it’s a reliable, long-term solution that reduces downtime and simplifies maintenance.

Practical scenarios you’ll appreciate: - Upgrading a residential service panel to support higher-capacity circuits without changing the entire panel. - Replacing failing breakers in commercial or light industrial load centers where vibration and thermal cycling are common. - Installing in new construction where OEM-compatible breakers streamline procurement and guarantees plug-and-play compatibility.

Simple, concrete benefits: - Predictable protection that minimizes nuisance trips during legitimate faults. - Durable mounting that resists loosening and maintains a secure bus connection. - Clear, Siemens-engineered compatibility with panelboards designed for bolt-on molded case breakers.