Siemens HQR23B175H Circuit Breaker – QR Series – 175A – 3 Pole – 240VAC – Thermal Magnetic – Bolt-On – High Interrupting Capacity (100kA)

The Siemens HQR23B175H is a QR Series low-voltage molded case circuit breaker engineered for enhanced short-circuit protection in demanding commercial, industrial, and power distribution systems. Rated at 175A and 240VAC, this 3-pole breaker is designed for three-phase applications requiring superior fault-clearing capability and reliable performance under extreme electrical conditions.

Equipped with a thermal-magnetic trip unit featuring Long-Time and Instantaneous (LI) protection functions, the HQR23B175H provides dependable protection against overloads and high-magnitude short-circuit faults. Its upgraded interrupting capacity of 100kA at 240VAC makes it suitable for high fault-current environments where maximum system protection is required.

Built on Siemens QR frame standard 40°C construction, this breaker features a robust bolt-on mounting design for secure installation. It is supplied in a “no lugs installed” configuration, allowing flexibility in selecting appropriate terminal lugs based on application requirements.

Specifications

• Brand: Siemens
• Part Number: HQR23B175H
• Series: QR Series
• Type: HQR2H 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: High Interrupting Capacity, No Lugs Installed

Electrical Ratings

• Current Rating: 175A
• Voltage Rating: 240VAC
• Number of Poles: 3 Pole
• Phase: 3 Phase
• Interrupting Capacity: 100kA @ 240VAC
• Trip Functions: LI – Long-Time and Instantaneous

Construction

• Low-voltage molded case design
• QR frame construction (40°C standard)
• Bolt-on mounting configuration
• Thermal-magnetic trip mechanism
• High interrupting capacity design (100kA)
• Supplied without lugs installed
• Heavy-duty industrial-grade housing
• Engineered for severe fault-current conditions

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

• High fault-current industrial distribution systems
• Commercial electrical power panels
• Switchboards and panelboards
• Heavy-duty three-phase equipment protection
• Critical infrastructure installations
• Industrial manufacturing facilities
• Utility-grade power distribution

Returns are easy

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

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