Schneider Electric - A9F44320 Acti9 iC60N 3P C 20A MCB.
This Acti9 iC60N is a low voltage miniature circuit breaker (MCB). 
It is a 3P circuit breaker with 3 protected poles, 20A rated current and C tripping curve. 
The rated short circuit breaking capacity goes up to 20kA at 220VAC to 240VAC conforming to EN/IEC 60947-2 standard and 6000A at 415VAC conforming to EN/IEC 60898-1 standard. I
This miniature circuit breaker protects circuits against short circuit and overload current. 
Its unique VisiTrip indicator reduces intervention time by showing the faulty circuit. 
The product can be clipped on a DIN rail. 
Its width is 6 pitches of 9mm. 
The product colour is white (RAL9003). 
The dimensions are (W) 54mm x (H) 85mm x (D) 78.5mm. 
The weight is 0.375kg. 
According to IEC 60529 standard, the degree of protection is IP20 and IP40 in enclosure.