Power Distribution
For main distribution and higher-capacity circuits—typically used on incomers, feeders, and critical loads—featuring higher current ratings, stronger breaking capacity, and richer system coordination options.
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Key Features
- Main-circuit protection and isolation for mid-to-high current ranges
- Rich accessory options: shunt/undervoltage releases, aux contacts, interlocks, mechanical indicators (model-dependent)
- Supports source transfer and emergency supply strategies (e.g., ATS applications)
- Designed for switchgear integration: main panels, grid-tie cabinets, power distribution systems
Benefits
- Stronger protection for higher loads and tougher operating conditions
- Better coordination for selective protection and interlocking control (design-dependent)
- More reliable maintenance with clear main isolation and fault sectioning to reduce impact scope
Subtypes
- MCCB (Molded Case Circuit Breaker): feeder/power circuit overload & short-circuit protection with wider current ranges.
- ACB (Air Circuit Breaker): for incomers or high-capacity circuits; suited to switchgear systems.
- ATS (Automatic Transfer Switch): automatic transfer between main and backup sources for critical-load continuity (per scheme).
- Disconnecting switch / Knife switch: visible isolation and maintenance disconnection for main circuits; simple and robust design.
