Siemens CQD180 80A 1-Pole 277 V Circuit Breaker Potential Transformer

Siemens CQD180 80A 1-Pole 277 V Circuit Breaker Potential Transformer is a dependable overcurrent protection solution designed for commercial and light industrial electrical panels. With a specific focus on single-pole, 277-volt circuits, this CQD180 part delivers reliable performance where space, reliability, and compatibility matter most.

Key details at a glance:

• Current rating: 80 A
• Poles: 1 (single-pole)
• Voltage rating: 277 V
• Part number: CQD180
• Brand: Siemens
• Functionality: Circuit protection with potential transformer integration for monitoring configurations

Why this breaker stands out. The CQD180 is purpose-built for 277 V single‑phase circuits common in commercial lighting, HVAC control, and general power distribution. Its 80 A rating provides solid protection for feeders and branch circuits without unnecessary interruptions on normal load conditions. Designed as a direct replacement part for compatible Siemens panels, it preserves panel integrity and electrical performance while simplifying maintenance and stock management.

Important use cases to consider:

• Protecting 277 V lighting and small motor circuits in offices, retail spaces, warehouses, and service areas.
• Implementing reliable protection in retrofit or new-install projects where Siemens CQD180 compatibility is a clear fit.
• configurations that leverage potential transformer interfaces for monitoring and protective signaling within a larger protection scheme.

How this helps you in real-world scenarios:

• Prevent electrical damage by interrupting fault currents promptly on single-phase feeders feeding 277 V circuits.
• Maintain system reliability in environments where quick, predictable tripping is critical for uptime and safety.
• Keep equipment and wiring within safe operating limits, reducing risk during surges, short circuits, or overloads.

Installation and compatibility tips (for a smooth, compliant setup):

• Verify panel compatibility with Siemens CQD series breakers before replacement.
• Install by a qualified electrician in accordance with local electrical codes and manufacturer guidelines.
• Ensure the circuit design uses 277 V single-phase distribution suitable for the CQD180’s rating.
• If integrating with a potential transformer setup for monitoring, follow the system’s metering and signaling configuration requirements.

In short, the Siemens CQD180 80A 1-Pole 277 V Circuit Breaker Potential Transformer offers targeted, dependable protection for 277 V single-phase circuits, backed by Siemens’ reputation for reliability. It’s the practical, specs-aligned choice for professionals stocking replacement parts and upgrading commercial electrical panels.