At DC, it interrupts 15 kA per IEC 60947-2 up to 72 V, so it also fits DC auxiliary circuits in control panels. Rated operating voltage is 400 V AC (440 V for single- or multi-phase operation), 50/60 Hz.
The 5SY4104-5 is certified to IEC / EN 60898-1 (10 kA rated short-circuit capacity) and to IEC / EN 60947-2 (35 kA). It also carries UL 1077 recognition with a 5 kA interrupting rating.
Operating temperature range is -40 °C to 75 °C, with humidity limits of 95% at 55 °C, 55% at 70 °C, and 35% at 75 °C. Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz.