Siemens QJ22B175 - 175 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Introducing the Siemens QJ22B175, a rugged 175A, 240V, 2-pole bolt-on molded case circuit breaker designed to safeguard your electrical distribution. Built for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers, this unit is a reliable choice for residential, commercial, and light industrial settings.

Key advantages that matter in the real world

• Secure bolt-on mounting for a rigid, vibration-resistant bus connection that stays put in busy panels and vibrating environments.
• Thermal-magnetic trip unit delivers stable, repeatable protection performance—fast enough to clear short circuits, while preventing nuisance trips from normal inrush currents.
• OEM-ready compatibility works with matching Siemens OEM load centers and panelboards, ensuring a clean, straightforward replacement or upgrade path.
• Versatile application suited for residential, commercial, and light industrial circuits requiring 175A at 240V.

Technical snapshot

• Manufacturer: Siemens
• Part Number: QJ22B175
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 175A
• Voltage Rating: 240V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Who benefits most

Electrical contractors, facility managers, and qualified installers who need to upgrade or replace heavy-load circuits in panelboards will find the QJ22B175 a practical, long-lasting option. Its robust bolt-on design is particularly valuable in installations where vibration or movement could loosen less secure breakers, while the 175A capacity supports sizable loads such as large branch circuits or subpanel feeders in modern spaces.

Use-case scenarios

• Upgrading a main distribution panel to support higher-load circuits without sacrificing protection quality.
• Replacing an aging or incompatible breaker with a Siemens bolt-on unit that aligns with existing OEM panelboards.
• Protecting high-current equipment in light commercial or industrial environments where reliability and fast fault clearance are essential.

With the Siemens QJ22B175, you’re choosing a proven solution that pairs precise thermal-magnetic protection with a secure mechanical connection, engineered to run consistently under demanding conditions. If you’re assembling or updating a panelboard system, this 2-pole, 175A, 240V bolt-on breaker from Siemens delivers confident protection and straightforward integration—just the right fit for serious electrical infrastructure. Available from AmpState.