Siemens | HQJ23B100H01S01 | Circuit Breaker | 100A | 3-Pole | 240V

Introducing the Siemens HQJ23B100H01S01 Circuit Breaker—a robust, reliable choice for safeguarding 3-phase electrical systems. With a 100A rating, 3-pole design, and 240V operation, it's engineered for maintenance, retrofit, and replacement projects where exact specs matter.

Built around Siemens' engineering standards, this circuit breaker delivers precise trip performance and consistent protection across all three phases, reducing the risk of partial trips that can leave equipment exposed.

Key specifications

• Amperage: 100A
• Poles: 3-Pole
• Voltage: 240V
• Part number: HQJ23B100H01S01

Why this Siemens HQJ23B100H01S01 stands out

Direct-fit compatibility with Siemens panels and a clear part-number-based reference simplifies procurement and reduces the guesswork during replacement. The 3-pole design ensures simultaneous disconnection across all three phases, which is critical for balanced loads and safe shutdown in 3-phase systems. The 240V rating is ideal for typical commercial and industrial equipment, MCCs, and distribution gear that require full-voltage protection.

Ideal use cases

• Maintenance shutdowns where a reliable 3-pole, 100A protection device is required
• Retrofits in existing Siemens installations that need the same 100A 3-Pole/240V specs
• Replacement of aging breakers in commercial or light industrial panels to restore full protection across all three phases

Installation and compatibility tips

Before ordering, confirm fit and ratings for your panel. The part number HQJ23B100H01S01 is your best reference for compatibility. Always follow your panel manufacturer’s installation instructions and torque guidelines, and verify that the three-phase protection aligns with the circuit being protected.

How it compares to other options

While many breakers offer similar amperage and voltage, this Siemens unit is designed specifically to integrate with Siemens panels and trip mechanisms, ensuring synchronized protection and streamlined replacement. If you’re maintaining a Siemens-based distribution setup, choosing the HQJ23B100H01S01 minimizes compatibility risk and simplifies serviceability over time.

Get confident protection for your 3-phase load centers with a unit built to meet demanding commercial and industrial environments. Add the HQJ23B100H01S01 to your cart and secure a precise, compatible upgrade or replacement that aligns with your existing Siemens equipment.