This is a DC-only breaker — note the operating voltage type is DC, not AC. That makes it the right choice for photovoltaic arrays, battery banks, DC bus distribution, or any 2-wire DC load center where you need overcurrent protection. IP20 with connected conductors. Pollution degree 2 covers normal industrial atmospheres.
Physical fit and integration
Dimensions: 90 mm high, 36 mm wide (2 MW), 76 mm deep. Installation depth behind the panel is 70 mm. Mounting position is unrestricted — install upright, sideways, or inverted; the thermal-magnetic mechanism works in any orientation. Sealable with a lead seal or lockout tagout hasp for safety-lockout procedures. Supplementary devices (shunt trip, auxiliary contacts, alarm switch) can be added on the right side.