It's built for main breaker duty in residential and infrastructure meter panels — the 'E' curve means a wider magnetic trip band than a standard B or C, which helps avoid nuisance tripping on inrush-heavy loads like multiple LED drivers or small transformer banks while still clearing a bolted fault fast.
Mounting and wiring specifics
Mounts on a 40-mm busbar system per DIN 43870 Part 2, not a standard DIN rail — this is the busbar grid used in German-style meter panels. Takes solid or stranded copper from 2.5 mm² up to 50 mm², which covers everything from a 6 mm² meter tail to a 35 mm² main feed. The outgoing side uses a spring-loaded terminal; infeed is at the box terminal. Occupies 1.5 width units (about 27 mm on the busbar). Overall dimensions: 151.3 mm high, 89.5 mm deep, enclosure depth 76.3 mm. IP40 with conductors connected — fine for a meter cabinet, not for a wet panel. Sealable via locking slide with lock, wire seal, cable ties, or Antilux seal.