Classify by function and arrangement
Low-voltage switchgear types can differ by bus arrangement, incomer and feeder devices, withdrawability, protection, metering, enclosure construction, and operation. The project one-line and maintenance philosophy should determine the type.
Inputs to compare
| Input | Why it matters |
|---|---|
| Source and feeder arrangement | Defines ways, bus, and cable interfaces |
| Fault and current duty | Sets device and assembly requirements |
| Isolation and maintenance | Influences fixed, plug-in, or withdrawable arrangements |
| Protection and metering | Defines relays, CTs, meters, and alarms |
| Environment and access | Affects enclosure, cooling, and service |
Scope boundary
This guide does not select a type or approve a rating without the project study and manufacturer evidence.
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