Siemens | QJH22B070 | Circuit Breaker | 70A | 2-Pole | 240V | Bolt-On

When you need dependable overcurrent protection for a 240V circuit in a Siemens panel, the Siemens QJH22B070 circuit breaker is built to perform. This 70A, 2-pole bolt-on model is designed for maintenance, retrofit, and replacement scenarios where exact specifications matter.

Key specifications at a glance

• Amperage: 70 A
• Poles: 2-Pole
• Voltage: 240 V
• Mounting: Bolt-On
• Part reference: QJH22B070

This two-pole, 240V design protects both legs of a split-phase circuit, ensuring coordinated shutoff on fault conditions and reducing risk to connected equipment. The bolt-on mounting provides a secure, robust connection ideal for panels that rely on fixed mounting rather than plug-in style breakers.

Ideal use cases

• Maintenance: replacing a failed or worn breaker in compatible Siemens panels without altering the panel configuration.
• Retrofit: upgrading circuit protection to a 70A, 2-pole 240V solution when upgrading load demands or meeting updated code requirements.
• Replacement: exact-spec replacement where QJH22B070 is specified, ensuring continued protection without panel modification.

Compatibility and installation tips

• Always confirm fit and ratings before ordering. The Part Number QJH22B070 is the best reference for compatibility.
• Power down the electrical panel and follow the panel’s installation manual. Bolt-on breakers require proper mounting hardware and torque as specified by Siemens for secure operation.
• Verify that the 70A rating aligns with the circuit’s load calculations; if the load exceeds this rating, consider a higher-capacity protection solution or alternative wiring arrangements.

Built for professionals and serious DIYers restoring or upgrading Siemens systems, this breaker delivers reliable protection, straightforward installation, and durable performance in demanding electrical environments.