Siemens HQJ23B100 100A 3-Pole 240 V Circuit Breaker

Meet the Siemens HQJ23B100 100A 3-Pole 240 V Circuit Breaker—a solid, reliable solution designed to protect large electrical feeders and 3-phase equipment. Built to work within Siemens panels that accommodate HQJ-style breakers, this unit delivers dependable overcurrent protection for demanding commercial and industrial setups.

What this circuit breaker does for you

• Precise overcurrent protection: The HQJ23B100 is engineered to interrupt faults before they escalate, safeguarding wiring and equipment from damage.
• High-capacity performance: With a 100 A current rating, it handles substantial loads while maintaining reliable protection for feeders and motors.
• Three-pole reliability: The 3-pole design provides balanced protection for three-phase systems, or multi-wire branch circuits, helping prevent phase imbalance and equipment faults.
• Voltage compatibility: Rated for up to 240 V, it is suited for a wide range of 3-phase and 240 V applications common in commercial environments.
• Tiered protection in a compact form: Built to fit Siemens HQJ-series panels, offering a seamless upgrade path for panel modernization and downtime reduction.

Ideal applications

• Feeders for industrial machinery, pumps, and HVAC units in commercial facilities
• Main service panels in light industrial environments where 3-phase protection is essential
• Upgrades or replacements in existing Siemens HQJ-compatible panels to restore reliable protection

Why choose Siemens HQJ23B100

• Trusted brand and engineering: Siemens delivers consistent performance, backed by decades of electrical protection expertise.
• Clear delineation of limits: A straightforward 100 A rating makes sizing decisions easier for mid-to-large circuits without overspecifying components.
• Compatibility and integration: Specifically designed for use in HQJ-series panels, simplifying installation and ensuring coordinated protection with existing breakers.
• Practical, long-term protection: By reliably interrupting fault current, it minimizes downtime and equipment wear in busy facilities.

Specifications at a glance

• Current rating: 100 A
• Poles: 3
• Voltage rating: 240 V
• Part number: HQJ23B100
• Type: Siemens HQJ-series circuit breaker

Whether you're upgrading a panel, replacing a worn-out breaker, or equipping a new installation, the Siemens HQJ23B100 100A 3-Pole 240 V Circuit Breaker delivers dependable protection, straightforward installation, and durable performance for demanding electrical environments.