Siemens Q21520CTNC - 15-20A, Circuit Breaker

The Siemens Q21520CTNC is a rugged circuit breaker designed to deliver dependable overcurrent protection where it counts. With a precise 15-20 A current rating, this unit protects electrical systems from faults while helping keep wiring and assets safe in demanding environments.

Designed for versatility and reliability, it is suitable for installation in panelboards, switchboards, control panels, and OEM equipment. Whether you’re outfitting a new distribution panel or upgrading a motor control center, the Q21520CTNC provides solid protection that you can count on in industrial, commercial, and OEM applications.

• Current rating: 15-20 A
• Breaker type: Circuit Breaker
• Applications: Panelboards, switchboards, control panels, and OEM equipment
• Ideal for: Industrial, commercial, and OEM environments requiring reliable overcurrent protection and safe operation in distribution panels and motor control centers

Practical use cases include safeguarding feeders in distribution panels inside manufacturing lines, protecting control logic in commercial building gear, and providing robust protection for OEM assemblies where frequent switching and lifting of loads occur. The Q21520CTNC helps minimize downtime by quickly interrupting fault currents, preserving downstream devices and reducing the risk of wiring damage.

Choosing Siemens means pairing your electrical protection with proven engineering and a track record of dependable performance. The Q21520CTNC is a purpose-built solution for professionals who demand clarity, safety, and continuity in power distribution. If you’re designing or maintaining systems where consistent overcurrent protection is non-negotiable, this circuit breaker is a straightforward, reliable fit for your panels and centers.