The 2 A rating keeps it on lighting or control circuits, not branch feeders. Breaking capacity is the real selector here. The 5 kA per UL 1077 / CSA C22.2 No. 235 tells you it's listed for North American supplementary protection — not a branch-circuit listed breaker under UL 489. That distinction decides whether it passes a panel inspection in a UL 508A assembly. DC side: rated 72 V max, 15 kA per IEC 60947-2. That's enough for a 48 VDC control bus or a small battery string, but check polarity — the breaker is marked for DC use but the evidence doesn't specify unidirectional or bidirectional DC interruption. If you're switching a DC motor or a battery bank, confirm the DC switching polarity with the manufacturer's application note.
Mounting position any, which saves head-scratching in a crowded enclosure. Temperature range -40 to 75 °C with a derating curve above 40 °C. If this breaker sits near a heat source — say above a VFD in a sealed cabinet — check the thermal curve for the actual 2 A load at ambient.
The sealable feature (lockable toggle) is useful for lockout/tagout on a machine circuit.