Transient suppressor for 440V DC rails
It is rated for 1500W peak pulse power (10/1000 µs waveform) and offers a minimum breakdown voltage of 418V, a reverse standoff of 376V, and a maximum clamping voltage of 776V at 13A peak pulse current (8/20 µs).
Clamping voltage and surge current — what they mean for protection
The 418V minimum breakdown ensures the device starts conducting before the protected rail exceeds its safe limit, while the 776V maximum clamping defines the worst-case voltage the downstream circuitry must survive. The 13A peak pulse current (8/20 µs) gives the surge capacity for typical industrial transients; the 1500W rating (10/1000 µs) is the energy-handling benchmark for longer-duration events. No power-line protection is built in — this is a secondary-side suppressor, not a mains-rated MOV replacement.