This makes it a fit for DC distribution boards in residential and infrastructure applications — think solar combiner boxes, DC bus feeds, or telecom power supplies where a single-pole DC interruption is needed.
The 220 V DC maximum rating is the key constraint: this breaker is built for DC, not AC. Many general-purpose MCBs derate significantly on DC or lack a DC rating entirely. In a DC system, arc extinction is harder than with AC (no zero-crossing), so a dedicated DC rating is essential. For grounded return DC circuits, single-pole interruption is standard.
Occupies 1 modular width unit (18 mm) on DIN rail. The breaker is sealable — the toggle can be locked in the OFF position with a padlock, useful for lockout/tagout. Supplementary devices are installable, meaning auxiliary contacts, shunt trips, or undervoltage releases can be snapped onto the side without extra DIN space.