Siemens | HQR23B150H | Circuit Breaker | 150A | 3-Pole | 240V

Introducing the Siemens HQR23B150H circuit breaker—a robust 150 amp, 3-pole device designed to guard 3‑phase systems at 240 volts. Engineered for maintenance, retrofit, and replacement projects where exact specifications matter, this breaker delivers reliable overcurrent protection and seamless integration into compatible panels.

Key specifications

• Amperage: 150 A
• Poles: 3-Pole
• Voltage: 240 V
• Part number reference: HQR23B150H (best reference for compatibility)

What makes this breaker a smart choice

• Precise compatibility for 3‑pole, 240 V circuits in Siemens panels that specify the HQR series.
• Designed for reliable performance during routine maintenance, panel retrofits, or replacement of aging or failed breakers.
• Clear, unambiguous part identification helps prevent mismatches and installation delays—use the HQR23B150H as your primary compatibility reference.

Who is this ideal for?

Facilities engineers, reliability technicians, and electrical contractors managing commercial or light industrial electrical systems will find this breaker suits retrofit projects, panel upgrades, plus service and maintenance routines where high-current, 240‑volt protection is required. It’s particularly useful when you’re updating distribution boards to preserve safety margins and ensure consistent trip characteristics across the system.

Practical guidance for installation and compatibility

• Before ordering, verify that your panel or enclosure requires a 150 A, 3‑pole, 240 V configuration and that the HQR series is supported by your Siemens equipment.
• Use the part number HQR23B150H as the primary reference to confirm exact fit and ratings—this minimizes mismatch risks during procurement.
• Check panel labeling and manufacturer recommendations to ensure proper mounting, torque, and electrical connections for a secure, code-compliant installation.

Usage scenarios and benefits in real-world setups

From 3‑phase motor circuits in manufacturing lines to feeders powering critical equipment in data halls, this Siemens circuit breaker provides dependable protection against overcurrent events. Its 150 A rating is well-suited for substantial loads, while the 3‑pole design helps guard all phases consistently, reducing the risk of uneven fault conditions and partial system outages.