Siemens HQR23B100 Circuit Breaker – QR Series – 100A – 3 Pole – 240VAC – Thermal Magnetic – Bolt-On

The Siemens HQR23B100 is a QR Series low-voltage molded case circuit breaker designed to provide reliable overload and short-circuit protection for commercial, industrial, and power distribution applications. Rated at 100A and 240VAC, this 3-pole breaker is ideal for three-phase electrical systems requiring dependable circuit protection and high interrupting performance.

Equipped with a thermal-magnetic trip unit featuring Long-Time and Instantaneous (LI) protection functions, the HQR23B100 delivers effective protection against sustained overload conditions and high-level fault currents. Its high interrupting capacity of 65kA at 240VAC enables safe interruption of substantial short-circuit currents in demanding electrical installations.

Built on the Siemens QR frame standard 40°C platform, this breaker utilizes a secure bolt-on mounting configuration and is supplied without lugs installed, providing flexibility for field-selected terminal connections based on application requirements.

Specifications

• Brand: Siemens
• Part Number: HQR23B100
• Series: QR Series
• Type: HQR2 Molded Case Circuit Breaker
• Category: Molded Case Circuit Breaker
• Mounting Type: Bolt-On
• Frame Type: QR Frame Standard 40°C Breaker
• Protection Type: Thermal Magnetic
• Trip Unit: Fixed, Non-Interchangeable
• Special Features: No Lugs Installed

Electrical Ratings

• Current Rating: 100A
• Voltage Rating: 240VAC
• Number of Poles: 3 Pole
• Phase: 3 Phase
• Interrupting Capacity: 65kA @ 240VAC
• Trip Functions: LI – Long-Time and Instantaneous

Construction

• Low-voltage molded case design
• QR frame construction
• Bolt-on mounting configuration
• Thermal-magnetic trip mechanism
• No lugs installed for wiring flexibility
• Rugged industrial-grade housing
• Designed for high fault-current applications

Functions

• Overload protection
• Short-circuit protection
• Long-time delay protection
• Instantaneous fault protection
• Circuit switching and isolation

Dimensions

• Height: 4.331 in
• Width: 7.087 in
• Depth: 3.937 in
• Weight: 4.52 lbs

Standards

• CSA Approved

Applications

• Commercial power distribution systems
• Industrial electrical distribution equipment
• Panelboards and switchboards
• Three-phase branch circuit protection
• Equipment and feeder protection
• High fault-current installations

Returns are easy

You may return items within 30 days of delivery for a refund.

FREE Shipping on orders over $149.

My Circuit Breakers offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).

Same Day Shipping

We strive to ship out your items within one business day.

In rare circumstances, My Circuit Breakers may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.

My Circuit Breakers provides a comprehensive 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer). Extended warranties are available upon request.