What the 1500W pulse rating means for a 24V rail
The 1.5KE24CABULK: It clamps a 20.5V reverse standoff rail at 33.2V, handling up to 45A of surge current before the junction temperature hits the limit. The 20.5V standoff means it sits across a nominal 24V DC bus without conducting leakage; only when a transient pushes the line above 22.8V (the minimum breakdown) does the device avalanche and clamp. The 33.2V clamp voltage is the maximum the protected load sees during the surge.
Package and mounting — DO-201 axial
Through-hole DO-201AA (DO-27) axial-lead package, supplier device package DO-201. No power line protection rating — this is a general-purpose transient suppressor, not a mains-grade MOV replacement. Bidirectional single-channel configuration suits AC signal lines or DC rails where polarity reversal is possible.