Figure 2.7 Typical MCCB Layout
Item Description
1 Line/Load Shrouds
2.5 Typical Customer Connections
Each breaker, either ACB or MCCB, has typical field termination arrangements that are used, unless specified on a per project
basis. Below are the typical field terminations for the different ACBs and MCCBs amperages. Quantities of lug provisions vary
per nominal breaker rating. All lug pads consist of the standard NEMA hole pattern, which is 1.75 in. x 1.75 in. with a clearance
hole for 0.5 in. hardware. The 0.5 in. hardware consists of a bolt, 2 Belleville washers (one on each side of the connection), and
a nut.
2 Introduction Proprietary and Confidential ©2024 Vertiv Group Corp. 5
Vertiv™ UL891 Switchboard Installer/User Guide
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