Welcome to ATC Diversified Electronics

For more than 50 years, the ATC Diversified Electronics division of Marsh Bellofram (ATC Diversified) has offered some of the industry’s highest reliability AC current monitors, motor and pump protection, isolated switches and alternating relay products.

As a leader in solid state control products, the division was the industry pioneer in 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). Continued investment in new product R&D and continuous quality improvements allows the ATC Diversified team to offer market-leading technologies, keeping pace with the needs of an evolving industrial marketplace.