Leviton Din Rail Series 4100 Universal Voltage Bi Directional 3 Phase 3W 4W Modbus Meter Kits With 200A Split Core Current Transformers (4DUMR 2M) backorder47 GE GE260IS MV N Instant Start Electronic 3M 3M 34444 3M GE GE260IS MV N Instant Start Electronic Fluorescent Ballast For F96T12 F48T12 Lamps Run At 120 277V (74474) Mechanism: Twist lock bulb retention advanced communication meter kits come with either split core or flexible rope style Rogowski Current Transformers (CTs) for compact or irregularly shaped conductors The Series 4100 Meter Kits measure power imported from the utility grid and power exported from renewable energy sources like solar panels