The Schneider Electric EZ9F53325 is an Easy9 miniature circuit-breaker rated at 25 A with 3 poles, C-curve, and a breaking capacity of 3 kA Icu at 400 V AC 50/60 Hz conforming to SANS 60947-2.
The 25 A rating and C-curve suit general-purpose distribution circuits — lighting, socket outlets, small motor loads — where the inrush is moderate. That matters for a panel where you want to restore service without swapping the device after a trip. Limitation class 3 per SANS 60947-2 means the breaker limits the let-through energy during a short-circuit, protecting downstream equipment. Pollution degree 2 is the standard for a clean indoor panel — no condensation or conductive dust expected. The IP20 finger-safe terminals are fine inside an enclosure; outside it, you'd need a separate enclosure.
Clip-on mount to DIN rail, 54 mm wide (6 x 9 mm pitches), 81 mm high, 66.5 mm deep. Tightening torque 2 N.m. The toggle control and contact position indicator give a clear visual of the state — useful during panel commissioning or troubleshooting.