Minimum Clearance Between PowerPact B Backplate and Uninsulated Power Connectors

For all types of PowerPact B-frame circuit breakers that use uninsulated power connections (for example, busbars, spreaders, or uninsulated crimped lugs), the minimum clearance distance with the enclosure backplate is shown below.

A rear insulation screen or long terminal shield is required if the distance C is less than 12.7 mm (0.5 in) for all circuit breakers.

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