For more than 50 years, the ATC Diversified Electronics division of Marsh Bellofram Corporation has offered some of the industy’s highest reliability motor protection and alternating relay products. As a leader in solid state control products, the division has pioneered the first Phase Monitor Relay designed to protect 3-phase equipment from adverse conditions such as Phase Loss (single phasing), Under Voltage (brown-outs), and Phase Reversal (improper sequence).