The Allen-Bradley 1775-A2 expansion chassis is an important feature of any large-scale small scale setup or configuration of electronic connections or modules. This chassis is a computer casing or a metallic framework that acts as a structural support for the delicate electronic parts and components of a system. The 1775-A2 is part of a series of expansion chassis that are mostly utilized in combination with the Allen-Bradley VersaView series of screen modules within an industrial setting. The 1775-A2 is well matched with any display terminals and system modules made by Allen-Bradley. It can work with any Allen-Bradley system, no matter the size, and even the most basic desktop requires at least one such chassis to house wiring and circuitry.

The 1775-A2 is a special chassis that offers more slots than usual for boards since these are specialized units that are required by systems that are in need of more boards than usual for their operations. This unit is popular for machine builders and systems technicians that need expansion options to alter or upgrade a system. There are two basic varieties offered when it comes to a chassis, one is for simpler setups like desktops and the other is for tower modules that have further varieties. The 1775-A2 falls under the category of PLC 3 modules made by Allen-Bradley. These units tend to have memory, communication options, scanners, and power supplies. The 1775-A2 has the potential to offer a wide array of configurations and meet several expansion needs. The users have the freedom to utilize the unit according to the needs of the system, which can be upgraded or downgraded based on the configuration.