The 3-pole design fits three-phase loads or three single-phase circuits ganged on one handle.
At 25 A it handles a 5.5 kW three-phase motor at 400 V without nuisance tripping on start-up, provided the motor's locked-rotor current stays under 250 A peak. The IP20 rating applies only with conductors connected; the busbar area is live when the breaker is open, so a sealable cover is standard for lockout/tagout compliance.
Snaps onto standard DIN rail. Mounting position is unrestricted, so it can be installed horizontally or inverted if the panel layout demands it.