EKM6-630H 630A Advanced Circuit Breaker for High-Demand Industrial Applications
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| Product Family ID | OS-ETK-EKM6-630H |
|---|---|
| Variant SKU Count | 3 |
| Supplier | ETK |
| Supplier Model | EKM6-630H |
| Product Type | MCB / Circuit Breaker |
| Available Current Ratings | 400A / 500A / 630A |
| Available Voltage Ratings | 800V, 1000V, 1140V |
| Rated Voltage | 800V, 1000V, 1140V |
| Rated Current | 400A / 500A / 630A |
| Frame Current | 630A |
| Frame Size / Ways | 630A |
| Rated Current | 400,500,630A / 400A / 500A / 630A |
| Rated Voltage | 800V, 1000V, 1140V |
| System Voltage | 800V, 1000V, 1140V |
Product Overview
Three current variants from 400A to 630A for large inverter AC output protection and main distribution board feeders in utility-scale PV and C&I storage plants. At this current level the MCCB typically functions as a main incomer or bus section breaker requiring high breaking capacity and reliable trip performance.
At 400V AC three-phase, 630A represents approximately 435kW — appropriate for string inverter aggregation panels or medium central inverter output protection. At 690V AC, 630A handles approximately 753kW.
630A output MCCBs are used in centralised inverter configurations where multiple inverter modules share a common AC bus before the main transformer. The H-type frame designation confirms a higher breaking capacity suited to installation near transformer secondary busbars where grid fault currents are elevated.
Applications
Inverter output protection
AC distribution boards
EV and PV support circuits
Residential and commercial electrical BOS
Frequently Asked Questions
Is 630A sufficient for a 500kW central inverter?
At 690V AC three-phase, a 500kW inverter produces approximately 418A — within the 630A rating with margin. At 400V AC, 500kW produces approximately 722A — the 630A rated breaker would be undersized. Always check the inverter nameplate AC voltage and maximum output current.
Can EKM6-630H be used as a generator main switch?
AC MCCBs are commonly applied as generator main breakers. Confirm generator rated current, short-circuit contribution, whether motor-operated or shunt-trip variants are needed, and the generator grounding arrangement before specifying.
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