Siemens | QJ22B110L | Circuit Breaker | 2-Pole | 240V | Bolt-On

Meet the Siemens QJ22B110L—a precise, ready-to-install two-pole circuit breaker designed for 240V circuits. This bolt-on unit is tailored for maintenance, retrofit, and replacement projects where exact specifications matter, delivering dependable protection exactly where you need it.

Key specifications and compatibility

• Pole configuration: 2-Pole
• Voltage rating: 240V
• Mounting style: Bolt-On
• Part reference: QJ22B110L
• Compatibility note: Confirm fit and ratings before ordering. The part number is the best reference to ensure you’re matching the correct panel and protection characteristics.

Why this matters for your electrical panel

The two-pole design protects both live conductors of a 240V circuit, providing synchronized disconnection to prevent arcing and reduce the risk of shock or equipment damage. The bolt-on mounting offers a secure, durable attachment option that’s well-suited for retrofit upgrades and panel replacements where speed and reliability matter.

Who should consider this part

• Electrical maintenance technicians performing panel retrofits or component replacements
• Facilities engineers upgrading distribution boards to restore or improve circuit protection
• Installers seeking a precise Siemens replacement that aligns with existing 240V, two-pole configurations

Practical use cases

• Replacing a failed 2-pole 240V breaker in an industrial or commercial distribution panel
• Retrofit projects where a bolt-on QJ-series breaker is required to match existing protection characteristics
• Maintenance cycles that demand a reliable, easy-to-install component with clear part identification

Installation and best-practice tips

Before you install, power down the circuit and verify the panel accepts bolt-on breakers of the QJ family. Align the breaker with the bus connectors, secure with the appropriate mounting hardware, and follow the panel manufacturer’s torque specs. Since exact fit and ratings are critical, rely on the QJ22B110L part number as your primary compatibility reference to avoid mismatches.

Why choose Siemens for this application

Siemens brings a long-standing reputation for robust protection devices and dependable performance. The QJ22B110L is designed to integrate smoothly into compatible Siemens panels, offering a clear, identifiable replacement option that supports reliable circuit protection in everyday electrical infrastructure.