SIEMENS 5SY4203-5 Supplementary Protection Circuit Breaker

The SIEMENS 5SY4203-5 is a 2-pole supplementary protection circuit breaker designed for additional protection in electrical distribution and control applications. It operates at 480V with a 3A rating and a 5kA interrupting capacity, suitable for use in industrial control panels where selective circuit protection is required. This device is ideal for electrical distributors and switchgear suppliers looking to enhance safety and reliability in wire and cable installations and lighting solutions.

Specifications

• Application: Supplementary Protection
• Connection: Identical wire screw connections on line and load side
• Frequency Rating: 50 Hz
• Interrupt Rating: 5kA
• Product Weight: 0.7220 kg
• Manufacturer: Siemens
• Manufacturer Part #: 5SY4203-5

Features

• Rapid connection of feeder cables with identical terminals on both sides allowing top or bottom infeed
• No tools required for mounting or dismounting
• Supports fast and comfortable removal from assembly without busbar removal
• Trip indication for easy fault identification
• Equipped with delayed overload/time-dependent thermal release and instantaneous electromagnetic release for short-circuit protection
• High degree of protection against contact welding due to special contact materials

Downloads & Links

• Spec Sheet
• Spec Sheet