Siemens QRH22B125L - 125 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

The Siemens QRH22B125L is a 125A, 240V, 2-pole bolt-on molded case circuit breaker designed to reliably guard branch circuits in panelboards and loadcenters. Built to withstand the demands of residential, commercial, and light industrial environments, it delivers precise, repeatable protection when overcurrent or short circuits occur.

Key advantages that stand up to real-world use

• Secure bolt-on mounting: Tight, vibration-resistant bus connections prevent loosening over time, ensuring consistent electrical contact even in busy service rooms or equipment racks.
• Thermal-magnetic trip unit: Combines thermal protection with magnetic instantaneous response for dependable protection that trips quickly on severe faults and smoothly on gradual overloads.
• OEM-ready compatibility: Designed to pair with matching Siemens loadcenters and panelboards, delivering seamless fit and predictable trip characteristics in your existing infrastructure.
• 2-pole design for safe disconnection: Simultaneous breaking of both hot conductors enhances safety and protects connected equipment during a fault condition.

Who benefits from the QRH22B125L

Electricians, facilities managers, and maintenance teams performing panel upgrades, service enhancements, or new installations will find this breaker a precise fit for Siemens panel ecosystems. It’s ideal for protecting branch circuits in homes, small offices, retail spaces, and light industrial panels where reliable, code-compliant overcurrent protection matters.

Technical snapshot

• Manufacturer: Siemens
• Part Number: QRH22B125L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 125A
• Voltage Rating: 240V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Installation and practical notes

Choose the QRH22B125L when you need a rugged, drop-in solution that aligns with Siemens panel architecture. Verify that your loadcenter is rated for 125A and 240V, and use proper mounting hardware to secure the bolt-on connection. This breaker is designed to deliver dependable protection when wired into compatible panelboards and loadcenters, supporting long-term reliability for everyday electrical systems.