Schneider Electric K2H004ULH Harmony K K2 20A 4P 45° Cam Changeover Switch

The Schneider Electric K2H004ULH is a Harmony K2 cam changeover switch with four poles, a 45-degree switching angle, and a 20 A conventional free air thermal current (Ith). Front-mounted with a 45 x 45 mm plate and screw-clamp terminals, it withstands a 10,000 A short-circuit current behind a 20 A gG fuse and carries an IP40 enclosure rating.

Technical Specifications

Certifications & Standards

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

Selection Notes

The 4-pole changeover configuration switches all four conductors of a three-phase-plus-neutral circuit between two sources at up to 20 A Ith, where the 3-pole version would leave the neutral unswitched. It shares the K2 body, 45 x 45 mm front plate, and 20 A gG fuse back-up with the 2-pole and 3-pole changeover variants, differing only in depth, 107 mm, to fit the extra pole. Screw-clamp terminals accept flexible conductors up to 1.5 mm² or solid conductors up to 2.5 mm² on every pole.