Siemens QJ22B225 - 225 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

The Siemens QJ22B225 is a high-capacity, 2-pole bolt-on molded case circuit breaker designed to safeguard large branch circuits with reliable, consistent protection. Rated at 225A and 240V, it’s built to handle demanding panelboards and load centers in residential, commercial, and light industrial environments.

• Secure bolt-on mounting delivers a rigid, vibration-resistant connection to the bus, reducing the risk of loosened contacts and ensuring dependable operation over time.
• Thermal-magnetic trip unit provides precise protection by combining thermal sensing for gradual overloads with magnetic trip for immediate short-circuit events—giving stable, repeatable performance across a range of fault conditions.
• OEM-compatible design is engineered to pair with matching Siemens panelboards and load centers, streamlining replacement and maintenance in existing electrical systems.
• Versatile for multiple sectors suitable for residential, commercial, and light industrial applications where reliable overcurrent and short-circuit protection is essential.

Use cases and practical scenarios:

• Upgrade or expand panelboards in commercial spaces with higher current demands, such as lighting, HVAC, and heavy equipment feeders, without compromising protection performance.
• Install in residential subpanels or multi-family dwellings where robust branch-circuit protection at 225A reduces nuisance trips during peak loads.
• Deploy in light industrial outfits that require dependable shutdown capabilities to safeguard motors and distribution circuits in harsh environments.

Why the QJ22B225 stands out

It’s more than a breaker—it’s a deliberate balance of strong mechanical mounting and intelligent protection. The bolt-on design minimizes movement-induced wear, while the thermal-magnetic trip unit responds rapidly to faults, helping to minimize damage to conductors and connected equipment. When you need a dependable, OEM-ready solution for high-current panelboards and load centers, the QJ22B225 delivers with clarity and confidence.

Technical snapshot

• Manufacturer: Siemens
• Part Number: QJ22B225
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 225A
• Voltage Rating: 240V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Choose the Siemens QJ22B225 when you need a durable, code-compliant solution that pairs robust hardware with precise protection, ensuring your electrical system runs safely and efficiently under demanding conditions.