Siemens 5SY4125-8

The Supplementary Protector operates with a single pole and a rated current of 25 Amps. It complies with UL1077 standards and functions effectively at a voltage of 400 V. This device exhibits a trip characteristic of Curve D, making it suitable for inductive loads.

With a compact design, it has a width of 18mm and a built-in depth of 70mm. It is suitable for installation in environments with a pollution degree of 3 and operates effectively within an ambient temperature range of -40 °C. The device is rated for a short-circuit breaking capacity of 10 kA at 230 V and 20 kA at 400 V.

Protection class IP20 ensures that it is safe for use in typical indoor conditions. The rated insulation voltage is 440 V, and it supports conductor cross sections of 0.75 mm² for both solid-core and multi-wired connections. The device is designed for flush-mounted installation and is not explosion-proof.