The Siemens 3RV1913-1CA00-0AA1 is a moulded plastic enclosure with a double rocker, rated IP55, and includes both N (neutral) and PE (protective earth) terminals. It measures 54 mm wide and comes with a metric cable guide. This is the housing and terminal assembly for a motor-protective circuit breaker or similar device in the 3RV series — it provides the sealed, dust-protected enclosure and the wiring termination point, not the breaker itself.
IP55 and the dust-and-heat reality
In a cement plant or any dusty industrial environment, that keeps clinker dust and washdown water out of the terminals. The double rocker gives a positive seal over the actuator opening. The metric cable guide accepts standard PG or metric glands — no adapter needed for the panel entry.