Here are three stocks with buy ranks and strong growth characteristics for investors to consider today March 20th:Powell Industries (POWL) : This company which, is a strategic supplier of choice for highly complex and integrated systems for distribution and control of electrical energy and other critical processes, carries a Zacks Rank #1(Strong Buy), and has witnessed the Zacks Consensus Estimate for its current year earnings increasing 44.2% over the last 60 days.Powell Industries has a PEG ratio of 1.46 ...