Siemens | QJ2B080L | Circuit Breaker | 80A | 2-Pole | 240V

When you need dependable overcurrent protection that fits precisely, the Siemens QJ2B080L circuit breaker delivers. This 80A, 2-pole, 240V device is built for maintenance, retrofit, and replacement projects where exact specifications matter. The 80A rating protects feeders and branch circuits, while the two-pole design ensures simultaneous interruption of both hot legs for safer disconnect in faults.

Product identity and compatibility are tied to the part number QJ2B080L. Use it as the primary reference to confirm fit with your Siemens panel or subpanel and ensure your system voltage aligns at 240V.

• Amperage: 80A steady-state protection for heavy-duty circuits.
• Poles: 2-pole configuration provides dual-pole interrupting for complete line disconnection.
• Voltage: Rated up to 240V to cover common residential and light commercial panels.
• Application: Ideal for maintenance, retrofit, and replacement where exact spec matching is required.
• Reference: Best compatibility reference is the part number QJ2B080L; confirm fit and ratings prior to ordering.

What makes this breaker practical in real-world scenarios

Electricians and property managers performing panel retrofits or service upgrades can rely on this model to safeguard feeders and main distribution circuits. For retrofits, the 2-pole design simplifies wiring since both hot legs are isolated together, reducing the risk of partial arcing during replacement. In commercial settings, this 80A unit can protect subfeed breakers or dedicated equipment feeders that require robust protection without complicating the panel layout.

Installation and compatibility tips

Before you order, verify that your equipment requires a Siemens QJ-series component and that the panel rating supports 240V, 80A, and a two-pole breaker. While ordering, use the official part number QJ2B080L as the primary reference to avoid mismatches. When installing, follow standard electrical safety practices: shut off power, test for absence of voltage, and refer to your panel’s installation guide for torque specs and bus bar compatibility.

In summary, the Siemens QJ2B080L 80A 2-Pole 240V circuit breaker is a precise, compatible choice for critical replacement work, retrofit projects, and maintenance in systems that rely on Siemens components. Its two-pole design and clear reference to fit ensure you get reliable protection where it matters most.