Schneider Electric K1D024MLH Harmony K K1 3-Phase 12A Cam Voltmeter Switch

The Schneider Electric K1D024MLH is a Harmony K1 cam voltmeter switch that selects between three line-to-line voltage pairs (L1L2, L2L3, L3L1) plus an off position, with a 12 A conventional free-air thermal current (Ith) and 690 V rated insulation voltage. Its black handle carries a 0-L1L2-L2L3-L3L1 metallic legend across four 45° switching positions for connecting a single voltmeter to any of the three phase pairs.

Technical Specifications

Certifications & Standards

• CSA
• CSA
• UL
• UL
• IEC 60947-3
• IEC 60947-5-1
• CENELEC EN 50013

Selection Notes

The K1D024MLH is a voltmeter selector, not a load switch — it lets one panel-mounted voltmeter read any of the three line-to-line pairs by rotating through four positions instead of wiring three separate meters. Its off position isolates the voltmeter circuit when the panel is not being monitored. Size it for a voltmeter's instrumentation-level burden, not for motor or power switching, since no AC-3 operational current rating applies to this voltmeter-switch function.

Applications

Used on switchboard and panel-builder projects that need a single voltmeter to display all three line-to-line voltages via a front-panel selector instead of a dedicated meter per phase pair.