For higher fault-current environments (e.g., industrial distribution boards), check whether the installation requires IEC 60947-2 ratings — this unit carries only the EN 60898 rating. The 400 V AC rated voltage covers standard three-phase supplies; single-phase operation is rated at 250 V. DC operation is limited to 72 V maximum, so it is not a primary choice for DC battery banks or PV strings. The 1.7 W power loss per pole in hot operating state at rated current adds up to 6.8 W total for the 4-pole unit — negligible for most enclosures, but worth noting if the panel is densely packed and ambient temperature is already high.
Snap-on DIN rail mounting, any position. Sealable, halogen-free, silicon-free.