Low-voltage Switchgear

• Heat stress analysis of the switchgear structure has led to a heat-resistant design in which circuit breakers up to 5000A are self-cooled (i.e.cooling fans not required).
• All components, such as current transformers, voltage transformers, relays and meters, are made of the highest quality materials.
• AL-P low-voltage switchgear are designed with the benefit of Mitsubishi's vast switchgear and circuit breaker production experience of in excess of one hundred thousand panels over last 50 years.
• The reduced number of parts reduce the chance of failure.

• Partitions between compartments and an automatic shutter system completely isolate live parts.
• The pressure relief device which is installed optionally releases hot gas upwards in the event of an internal arc fault for operator's safety.

• Control switches are installed at a height appropriate for easy viewing and operation.
• Installation and testing duration are considerably reduced as the switchgear is tested and adjusted in the factory and then delivered as a complete unit.

• Panels with main circuit and control cable entry from either top or bottom are available.
• The AL-P is readily combined with Mitsubishi Electric‘s Motor Control Center (MCC). The combined arrangement has advantages such as compact size and a simplified overall structure. As the MCC utilizes a double-front design, a larger number of motor starter units can also be accommodated. The AL-P is the perfect complement for Mitsubishi's MCCs. (Further information regarding Mitsubishi's MCCs can be found in a separate publication.)

1. LOW-VOLTAGE SWITCHGEAR

2. AIR CIRCUIT BREAKER