OVERVIEW IDENTITY REPLACEMENT FAQ MODELS ABB LEGACY UNIT P4LG Exact-code replacement focus PROTECTION AND CONTROL SPARE 1KHJ044010R0001 P4LG Relay Unit 01 Exact code 02 Terminal fit 03 Function match Replacement decisions start with the full installed-unit identity. Sales Manager: Miya Zheng ✉ EMAIL ◉ CHAT 01 Product Position ABB 1KHJ044010R0001 carries the P4LG designation and belongs to an installed-base protection and control environment. For maintenance sourcing, the