The 4.5 kA breaking capacity per EN 60898 covers typical domestic and light commercial distribution boards; the 6 kA per IEC 60947-2 extends its fault-clearing capability for industrial panel applications where higher prospective fault currents are expected. The 36 mm width (2 width units) fits standard DIN-rail enclosures — the 76 mm depth and 90 mm height leave room for gland plates and wiring ducts.
It is sealable for tamper-proofing in metering or public-access installations.
Approvals and documentation
Rated breaking capacity is also listed at 5 kA under UL 1077 and CSA C22.2 No.235, so the part is accepted in North American supplementary-protection applications. Overvoltage category III suits fixed-installation distribution boards. The energy limiting class is 3 — high current limitation, which reduces let-through energy on downstream equipment.