Siemens | BQ3B080HL | Circuit Breaker | 80A | 3-Pole | 240V

Siemens BQ3B080HL Circuit Breaker is a sturdy, field-replaceable protection device designed for three-phase electrical distributions. With an 80-amp rating, 3-pole configuration, and a 240-volt operating range, it provides reliable overcurrent protection for commercial and light industrial panels. This unit is intended for maintenance, retrofit, and replacement scenarios where exact specs are required, and it is identified by the part number BQ3B080HL.

Key specifications

• Amperage: 80 A
• Poles: 3-Pole
• Voltage: 240 V
• Reference: Part number BQ3B080HL
• Best reference for compatibility: The part number is the most reliable guide to fit and ratings.

Why this matters in real life

When your electrical panel serves three-phase equipment or large branch circuits, an 80A 3-pole breaker like the BQ3B080HL ensures you can safely interrupt faults or overloads on all three phase conductors simultaneously. The 240V rating aligns with standard three-phase delta or wye systems used in warehouses, workshops, and utility-connected facilities, providing consistent protection across the distribution network.

Practical use cases

• Replacing a failed breaker in a Siemens panel that requires BQ3B080HL 80A 3-pole 240V protection.
• Retrofit projects where a three-phase feeder needs reliable overcurrent protection without changing the panel enclosure or bus structure.
• Maintenance stocking: keeping a compatible part on hand to minimize downtime during equipment service.

Installation and compatibility notes

Before ordering, verify that the fit and ratings match your panel’s requirements. The BQ3B080HL is specified to match Siemens systems, and the part number is the best reference for ensuring compatibility with your breaker panel model and its trip characteristics. If you’re replacing an existing unit, cross-check the line and load terminals and consult your panel’s labeling for the exact breaker type required.

What sets it apart

Unlike generic substitutes, the Siemens BQ3B080HL is designed to align with Siemens panel architectures, reducing the risk of compatibility gaps during retrofits. Its 3-pole design provides synchronized disconnection across all phases, which is essential for protecting three-phase equipment and preventing phase-to-phase faults from escalating.

In summary, the Siemens BQ3B080HL 80A 3-Pole 240V circuit breaker is a purpose-built choice for professionals tackling maintenance, retrofit, or replacement in three-phase distribution networks. Its precise ratings, clear part-number guidance, and Siemens-trained compatibility make it a practical, reliable solution for keeping electrical systems safe and compliant.