Siemens CQD6320 20A 3-Pole 600 V Circuit Breaker Potential Transformer

Siemens CQD6320 is a rugged, three‑pole circuit breaker designed to protect three‑phase power systems in commercial and industrial panels. With a practical 20 A current rating and a 600 V maximum voltage, this device provides reliable, coordinated protection for feeders, motors, and distribution circuits while fitting neatly into standard Siemens enclosures.

Key specifications

• Current rating: 20 A
• Poles: 3 (three‑phase protection)
• Voltage rating: 600 V
• Part Number: CQD6320

Why this breaker stands out

• Uniform three‑phase protection: By tripping all three poles together, it prevents phase imbalance and guards against damage to motors and connected equipment.
• Direct compatibility with Siemens systems: Designed to integrate smoothly with existing Siemens panels and labeling conventions, enabling straightforward replacement or upgrades in established installations.
• Reliable protection for demanding environments: Built to handle typical industrial panel conditions, delivering consistent performance and dependable fault containment at 20 A per phase.
• Clear traceability: The CQD6320 designation provides a precise, auditable part number for maintenance, stocking, and compliance documentation.

Ideal applications

• Three‑phase feeders in commercial buildings, data centers, and light industrial facilities
• Motor protection for small to mid‑size equipment operating on 3‑phase power
• Panel upgrades or replacements within existing Siemens electrical systems

Practical considerations for selection and use

• Ensure the circuit’s continuous ampacity and the system’s fault current are compatible with a 20 A, 3‑pole device to maintain proper protection margins.
• Plan replacements or upgrades within Siemens‑compatible enclosures to preserve wiring layout, labeling, and accessibility.
• Keep standard spares on hand for rapid panel maintenance and to minimize downtime during service events.

Whether you’re stocking a repair kit for service teams or outfitting a new three‑phase distribution panel, the Siemens CQD6320 20 A 3‑Pole 600 V circuit breaker delivers dependable protection, streamlined installation, and seamless integration with your existing Siemens electrical infrastructure.