Rack or Chassis
A chassis is the physical frame or structure of an automobile, an airplane, a desktop computer, or other multi-component device.
A Rack is the framework, typically with rails, bars, hooks, or pegs, for holding or storing things.
505-6516 - Texas Instruments
Simatic 505 16 slot rack..
6ES7378-2AB00-0AC0 - Siemens
Simatic M7-300 Expansion Module..
6ES5187-5UA11 - Siemens
Simatic S5 11 Slot Expansion Unit without PSU..
6ES5135-3KB13 - Siemens
Simatic S5 135U 21 Slot rack without Power Supply..
6ES5135-3KA13 - Siemens
Simatic S5 135U Rack Supplied without Power Supply..
6ES5150-3KB62 - Siemens
Simatic S5 150K Rack without power supply module..
6ES5188-3UA32 - Siemens
Simatic S5 21 Slot Central Rack without PSU..
6ES5188-3UA12 - Siemens
Simatic S5 21 Slot Expansion Unit without PSU..
6ES5700-8MB21 - Siemens
Simatic S5 Bus Module..
6ES5701-2LA12 - Siemens
Simatic S5 ER 701-2 Mounting Rack for S5-115U/F Expansion Units with 7 Free Module Slots for Distrib..
6ES5701-3LA12 - Siemens
Simatic S5 expansion rack..
6ES5701-3LH11 - Siemens
Simatic S5 Expansion Rack..
6ES5185-3UA21 - Siemens
Simatic S5 expansion unit without PSU..
6ES5180-3AA11 - Siemens
Simatic S5 expansion unit without PSU..
6ES5183-3UA00 - Siemens
Simatic S5 expansion unit without PSU..
6ES5183-3UA21 - Siemens
Simatic S5 expansion unit without PSU..
6ES5185-3UA00 - Siemens
Simatic S5 expansion unit without PSU..
6ES5185-3UA11 - Siemens
Simatic S5 expansion unit without PSU..
6ES5185-3UA12 - Siemens
Simatic S5 expansion unit without PSU..
6ES5185-3UA32 - Siemens
Simatic S5 expansion unit without PSU..
6ES5185-3UA33 - Siemens
Simatic S5 expansion unit without PSU..
6ES5188-3UA31 - Siemens
Simatic S5 expansion unit without PSU..
6ES5188-3UA51 - Siemens
Simatic S5 expansion unit without PSU..
6ES5188-3UA52 - Siemens
Simatic S5 expansion unit without PSU..
6ES5188-3UH31 - Siemens
Simatic S5 expansion unit without PSU..