Siemens QR22B150 - 150 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Siemens QR22B150 — a 150 A, 240 V, 2-pole bolt-on molded case circuit breaker engineered for reliable branch circuit protection in panelboards and load centers. This unit is built to handle everyday electrical demands with precision, making it a strong choice for residential, commercial, and light industrial applications.

• Secure bolt-on mounting delivers a rigid, vibration-resistant bus connection, reducing movement-related wear and ensuring consistent performance over time.
• Thermal-magnetic trip unit provides stable, repeatable protection, automatically adapting to fault conditions to minimize nuisance trips while safeguarding conductors and equipment.
• OEM-compatible design works seamlessly with matching Siemens and OEM load centers and panelboards, preserving fit, labeling, and trip characteristics for straightforward installations or upgrades.
• Versatile, high-demand protection ideal for residential service panels, commercial distribution, and light industrial subpanels where 150 A protection is required.

Technical specifications

• Manufacturer: Siemens
• Part Number: QR22B150
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 150 A
• Voltage rating: 240 V
• Number of poles: 2
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Use cases and scenarios:

• Installing or upgrading panels in homes, small businesses, or light industrial setups that require 150 A protection
• Retrofitting existing panelboards with a reliable, compatible breaker that maintains consistent trip performance
• Replacing aging or failed breakers in Siemens-compatible load centers to restore safe, code-compliant distribution

With the Siemens QR22B150, you gain a dependable, purpose-built solution that aligns with your Siemens ecosystem while delivering clear, actionable protection for your electrical distribution.