Siemens 5SY4550-7

The Supplementary Protector is a compact circuit breaker suitable for AC applications, rated for a maximum current of 50 A and a voltage of 240 V. With a trip characteristic of Curve C, it is designed for efficient protection in industrial circuits.

This model, featuring a 1+N pole configuration, is compliant with UL1077 standards and is categorized as an IEC Mini Circuit Breaker. The device measures 36 mm in width and 70 mm in depth, allowing for space-efficient installation. It operates effectively in environments with an ambient temperature range of -40 °C and supports a rated short-circuit breaking capacity of 10 kA at 230 V according to EN 60898 standards.

With a pollution degree of 3, the breaker ensures reliable operation under various conditions. The degree of protection is rated at IP20, indicating suitability for indoor use. The connectable conductor cross-section is compatible with solid-core and multi-wired conductors of 0.75 mm².

Additionally, the device features a rated insulation voltage of 250 V and allows for additional equipment connections, making it a versatile solution for circuit protection.