Modular switchgear and method of assembling the same

A method of assembling an electrical enclosure, the method comprising:

• providing a main cabinet, the main cabinet having a bus compartment, the bus compartment comprising a busbar assembly;
• forming a modular cabinet by interlocking a first compartment module with a second compartment module, at least one of the first compartment module or the second compartment module housing a circuit breaker, each of the first compartment module and the second compartment module comprising first and second side panels, each of the first and second side panels having at least one alignment member, wherein interlocking the first compartment module with the second compartment module includes engaging the at least one alignment member of each of the first and second side panels of the first compartment module with the at least one alignment member of a respective one of the first side panel or the second side panel of the second compartment module,
• wherein the interlocking the first compartment module with the second compartment module further includes engaging a terminal wall of the first compartment module with a terminal wall of the second compartment module to form a structural wall of the modular cabinet;
• and
• electrically connecting the circuit breaker housed in the at least one of the first compartment module or the second compartment module to the busbar assembly;
• and removably securing the main cabinet to the modular cabinet.

An electrical enclosure comprising:

• a modular cabinet configured to be removably secured to a main cabinet, the modular cabinet comprising at least two interlocking compartment modules, wherein each of the interlocking compartment modules interlocks with at least one adjacent one of the interlocking compartment modules, each of the interlocking compartment modules comprising:
• a first side panel and a second side panel, each of the first side panel and the second side panel comprising at least one alignment member, wherein each of the at least one alignment member engages the at least one alignment member of a respective one of the first side panel and the second side panel of the at least one adjacent one of the interlocking compartment modules;
• a base extending between the first side panel and the second side panel;
• and
• a terminal wall joining a side of the first side panel and a side of the second side panel,
• wherein the terminal walls of the interlocking compartment modules engage to form a structural wall of the modular cabinet.