Mounting and environment
The 5SY4403-5: Mounts in any position; the quick assembly system snaps onto DIN rail. Combined terminals top and bottom accept solid or stranded copper. Sealable model — can be locked in off position for LOTO. Operating temperature -40 °C to 75 °C, with derating above 55 °C per the humidity curve.
Standards and compliance
Rated for overvoltage category III, pollution degree 3. Complies with IEC/EN 60898-1 and IEC/EN 60947-2 for breaking capacity; also UL 1077 listed. Suitable for mechanical engineering and industrial applications. Halogen-free and silicon-free construction.