Transient suppression for 400 VDC bus rails
The 1.5KE530CA: Its 451 V reverse standoff voltage and 725 V clamping point make it a fit for protecting 400 VDC bus rails or three-phase rectified lines against inductive load dumps and lightning-induced transients. The part handles a peak pulse current of 2.1 A at the 10/1000 µs test condition, with the clamping voltage held to 725 V maximum. The bidirectional construction means a single device clamps both polarities — useful on AC lines or DC rails where reverse polarity is possible.
Package and thermal envelope
The wide temperature span suits outdoor telecom enclosures and industrial power supplies where ambient heat and self-heating from repetitive surges must be budgeted together.
Active production — sourcing posture
Littelfuse lists the 1.5KE530CA as Active.