Siemens QRH22B250 - 250 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens QRH22B250—a robust 2-pole, bolt-on molded case circuit breaker engineered for dependable branch circuit protection in panelboards and load centers. With a 250A rating at 240V, this unit is designed to reliably interrupt fault currents and safeguard electrical systems in residential, commercial, and light industrial environments.

Secure, vibration-resistant bolt-on mounting

Bolts-on directly to compatible Siemens OEM load centers and panelboards, delivering a rigid, vibration-resistant bus connection. This strong mechanical fit helps minimize nuisance trips caused by movement or vibration in demanding installations, delivering steady performance over time.

Thermal-magnetic protection for stable, repeatable performance

The thermal-magnetic trip unit combines precise overload protection with fast short-circuit interruption. By reacting to both temperature changes and magnetic fault currents, it provides predictable trip behavior across a wide range of loads, reducing wear on downstream equipment and improving overall system reliability.

OEM compatibility and versatile applications

Designed to align with matching OEM load centers and panelboards, the QRH22B250 integrates seamlessly into existing electrical architectures. Its 240V, 250A ratings make it suitable for high-current residential feeders, commercial circuits, and light industrial branch protections—where robust, code-compliant protection is non-negotiable.

Technical snapshot

• Manufacturer: Siemens
• Part Number: QRH22B250
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 250A
• Voltage Rating: 240V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal for

• Upgrading or expanding panelboards and load centers with reliable, code-compliant protection
• Residential power distribution where higher-current feeders require secure, durable protection
• Commercial spaces and light industrial installations needing robust fault protection and minimal maintenance

Why this breaker stands out

Unlike generic breakers, the QRH22B250 combines a secure bolt-on connection with a thermal-magnetic trip that delivers stable, repeatable protection across varying loads and fault conditions. This means fewer trips during routine load changes, longer equipment life, and greater peace of mind for system designers and maintenance teams.

Practical tips for deployment

• Pair with matching Siemens load centers or OEM panelboards to ensure optimal fit and performance.
• Plan for 240V circuits that require reliable, high-current protection—this breaker excels in feeders and main distribution paths where a 250A rating provides the needed headroom.
• Regularly inspect mounting hardware and bus connections during routine maintenance to preserve the integrity of the bolt-on connection.