PROTAC ELECTRIC CO. / TECHNICAL OVERVIEW
800VDC solid-state
circuit protection.
A working 250A prototype designed for fast fault interruption in AI data center power distribution.
250A platform performance
| Parameter | ProTac engineering result |
|---|---|
| Prototype rating | 800VDC / 250A |
| Fault interruption | <3 μs |
| Breaking capacity | 200kA |
| Efficiency | 99.9% |
| Electrical operations | 1 million |
These values reflect ProTac’s validated engineering results. Application suitability depends on the operating conditions, system design and protection coordination. This overview is not an installation manual or certification certificate.
Protection architecture
The platform combines a semiconductor power module, sensing and gate drive, local analog protection, digital control and firmware. Critical protection operates locally; software supports configuration, coordination and diagnostics.
Source converters, including SSTs, control continued energy injection. An SSCB interrupts the branch fault path. Stored energy downstream of the converter means source limiting alone does not necessarily clear a branch fault. Semiconductor interruption and mechanical safety isolation remain distinct functions.
Product and certification status
The existing working prototype is 800VDC / 250A. Initial UL certification is planned for 125A and 250A. This document does not represent UL certification as complete. Higher-current configurations, including 1,250A feeder protection, and 1,500VDC capabilities are development roadmap items.
Manufacturing strategy
Power modules and control/protection PCBAs are planned for production through China-based partners and contract manufacturers. ProTac’s planned Rhode Island operation will perform final assembly, software installation and routine end-of-line testing in a converted leased warehouse. Related software will be designed and installed by U.S. engineers.
Specialized qualification, life and high-energy short-circuit/overload testing will be outsourced.
ProTac Electric Co. · October 2026 · Product development overview