The CR30CN15DPO-E2 part is a 15A, 30mm, normally open (NO) contactor made by Lanbao. The contactor is rated for up to 30 VDC / 350 VAC and 10 HP. It has DIN rail or surface mounting and is designed for use in equipment and machines requiring frequent motor start/stop operations, such as pumps, fans, and compressors. It also features a 10K timing delay off, a 7.5K timing delay on, and adjustable protection against voltage overloading.