What it is and what the ratings mean
The 5SJ4308-7HG41: Rated insulation voltage is 440 V AC, with overvoltage category 3 and pollution degree 3, so it handles dirty environments and transient overvoltages typical in distribution panels.
Mounting and integration details
Operating ambient -40 to 75 °C covers outdoor panel and near-heat-source locations. Vibration resistant to 50 m/s² at 25–150 Hz. Halogen-free and silicon-free if those material restrictions apply to your spec.
