Siemens | QJ23B080HA02 | Circuit Breaker | 80A | 3-Pole | 240V | Bolt-On

Meet the Siemens QJ23B080HA02 Circuit Breaker — a purpose-built protection device designed for 240V, three-pole systems. With an 80A rating and durable bolt-on mounting, this breaker is tailor-made for maintenance, retrofit, and replacement projects where exact specifications matter, ensuring reliable performance in your electrical setup.

The QJ23B080HA02 is intended for use in systems that accept the Siemens QJ series. This 3-Pole configuration delivers synchronized protection across all three phases, making it ideal for protecting motors, feeders, and other high-load equipment in commercial and light industrial environments. The part number itself is the most reliable reference for compatibility, so you can confidently source the right breaker when matching existing panels.

Key specifications

• Amperage: 80A
• Poles: 3-Pole
• Voltage: 240V
• Mounting: Bolt-On
• Part Number: QJ23B080HA02

Why this matters for your install

• Secure, bolt-on mounting provides a robust connection, reducing vibration and improving long-term reliability in panel assemblies.
• Three-pole protection ensures simultaneous disconnection across all phases for balanced protection of three-phase loads.
• Designed for systems requiring precise amperage and voltage ratings, making it a dependable replacement or retrofit option without panel modification.

Ideal use cases

• Panel replacements or upgrades in Siemens-controlled environments where QJ-series breakers are standard
• Retrofits in commercial electrical rooms supporting three-phase circuits up to 80A
• New or renovated installations needing reliable protection for motors, compressors, and feeders operating at 240V

Practical notes for installation and compatibility

Before ordering, confirm the breaker fits your exact panel model and drives the intended three-phase protection at 240V. The part number QJ23B080HA02 is the best reference for compatibility, so cross-check it against your panel documentation. When installing, follow standard electrical safety practices and the panel manufacturer’s mounting guidelines to ensure a secure bolt-on fit and proper electrical contact. After installation, perform a functional check to verify proper tripping behavior and alignment with the system’s protection plan.

Whether you’re performing routine maintenance, executing a retrofit, or replacing a failed unit, the Siemens QJ23B080HA02 80A 3-Pole 240V Bolt-On circuit breaker delivers precise protection with the reliability you expect from Siemens.