Siemens QR22B100L 100A 2-Pole 240 V Circuit Breaker

Siemens QR22B100L is your trustworthy safeguard for 240V circuits, delivering precise, reliable overcurrent protection where it’s needed most. With a 100 A current rating and a two-pole design, this circuit breaker is purpose-built for Siemens panels that accept QR-type breakers, ensuring a secure, compatible fit and straightforward replacement when service life demands it. Key specifications at a glance

• Part Number: QR22B100L
• Current rating: 100 A
• Poles: 2
• Voltage rating:
240 V

Why this breaker stands out

• The QR22B100L is purpose-built for Siemens panels that accept QR-type breakers, minimizing compatibility hurdles during installation or when refreshing aging hardware.
• Dual hot-leg disconnection provides comprehensive protection for 240V loads, enhancing safety and simplifying wiring configurations.
• With the QR22B100L designation, it's easy to verify you’ve got the exact replacement or upgrade you need during maintenance.
• Built to withstand regular switching and the demands of commercial or residential electrical environments, helping maintain panel reliability over time.

Ideal use cases

• Branch circuits in residential or light commercial panels that operate at 240V and require 100 A protection.
• Upgrading aging breakers in Siemens installations to ensure consistent performance and panel compatibility.
• Serving high-demand 240V appliances or equipment where robust protection and clear part identification matter during service calls.

Practical guidance for installation and safety

Always treat electrical work with respect for safety and local code requirements. Before installing the QR22B100L:

• Confirm panel compatibility—ensure your Siemens panel accepts QR-series breakers and that 100 A, 2-pole protection aligns with your circuit design.
• Turn off main power and verify absence of voltage in the panel before handling any components.
• Follow manufacturer instructions and applicable electrical codes to ensure correct mounting, wiring, and labeling.
• For complex installations or when in doubt, consult a licensed electrician to ensure proper protection of 240V circuits.

The Siemens QR22B100L 100A 2-Pole 240V Circuit Breaker combines precise electrical protection with straightforward compatibility, making it a dependable choice for maintaining safe, reliable power in your electrical system. Whether you’re performing a panel refresh, upgrading older protection, or wiring a high-demand 240V circuit, this part delivers confidence through proven Siemens engineering and a clear, actionable part number for easy maintenance and future replacements.