Siemens QJH22B110 - 110 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Siemens QJH22B110 is a 2-pole, 110 A, 240 V bolt-on molded case circuit breaker designed for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Its bolt-on mounting delivers a rigid, vibration-resistant bus connection, helping maintain consistent performance even in environments with vibration or movement.

Key features that set it apart

• 2-pole, 110 A, 240 V rating— ideal for protecting larger 240 V branch circuits while providing reliable monitoring and interruption capability.
• Bolt-on mounting— secure, durable attachment that resists loosening and ensures a stable electrical connection over time.
• Thermal-magnetic trip unit— combines thermal overload sensing with magnetic trip for fast, predictable responses to both sustained overloads and short-circuit events.
• Molded case design (MCCB)— compact, rugged construction suitable for residential, commercial, and light industrial applications.
• OEM compatibility— designed to pair with matching Siemens OEM loadcenters and panelboards for seamless replacement and dependable performance.

Real-world applications

This breaker is ideal for protecting critical 240 V circuits in a variety of settings. Use cases include upgrading aging panels, adding new 240 V branch circuits in homes, and provisioning reliable protection within small commercial distribution boards or light industrial installations. The thermally-magnetic trip ensures a stable protection profile, preventing nuisance trips while still delivering fast response when faults occur.

Why choose the QJH22B110 for your panel

• Reliability you can count on in everyday electrical layouts—residential, commercial, and light industrial.
• Secure bolt-on mounting minimizes vibration-related wear and maintains consistent electrical contact.
• Clear, predictable trip behavior due to the integrated thermal-magnetic trip unit.
• Designed specifically to integrate with Siemens OEM loadcenters and panelboards, reducing fitment and compatibility concerns.

Technical snapshot

• Manufacturer: Siemens
• Part number: QJH22B110
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 110 A
• Voltage rating: 240 V
• Number of poles: 2
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

For installations that demand dependable protection and a straightforward replacement path in Siemens panelboards, the QJH22B110 delivers precise protection, durable construction, and installation convenience without compromise.