Siemens Miniature Circuit Breaker 5SY4316-8 (SI-MCB-16A 400V–3P)

The Siemens 5SY4316-8 miniature circuit breaker (MCB) is engineered to provide effective protection for electrical circuits against overload and short-circuit faults. With a rated current of 16A and a voltage rating of 400V, this 3-pole breaker is suitable for three-phase systems in industrial and commercial environments. Its high breaking capacity of 10kA ensures reliable interruption of fault currents, safeguarding equipment and installations.

This MCB is designed for quick response and consistent performance, helping to minimize downtime and prevent damage to connected loads. Its compact form factor allows easy installation on DIN rails, making it ideal for use in distribution boards and control panels. The robust construction ensures long service life even under frequent switching conditions.

Built to Siemens quality standards, the 5SY4 series ensures dependable circuit protection and operational safety, making it a critical component in modern electrical systems.

Typical Applications
• Electrical distribution boards
• Industrial and commercial installations
• Motor and equipment protection
• Control panels and switchgear systems
• Three-phase circuit protection