Rockwell 193-EC2AD E1 Plus 1A Solid State Motor Protection Relay Module

Product Overview

The 193-EC2AD​ is a sophisticated electronic motor protection relay manufactured by Rockwell Automation under its respected Allen-Bradley E1 Plus product line. Representing a major technological leap beyond traditional thermal overload relays, the 193-EC2AD​ uses advanced solid state electronics to deliver precise, consistent, and highly configurable protection for three-phase electric motors. Designed to safeguard motors against the full spectrum of common failure modes, the 193-EC2AD​ monitors not only for sustained overload conditions but also for phase loss, phase imbalance, jam, and underload situations. This comprehensive protection profile makes it an essential component in any industrial control panel where motor reliability, process continuity, and equipment longevity are priorities.

At the core of the 193-EC2AD​ is a microprocessor-based sensing system that continuously evaluates true motor current against a user-configured trip class and current setting. Unlike bimetallic thermal overloads, whose trip characteristics drift with ambient temperature and repeated cycling, the 193-EC2AD​ provides stable, repeatable protection regardless of enclosure temperature or the thermal history of the device. The relay offers adjustable current settings and multiple trip classes, allowing engineers to tailor the protection curve precisely to the motor’s service factor, duty cycle, and the characteristics of the driven load. Its compact, modular design integrates cleanly with Allen-Bradley contactors and starters, forming a complete, space-efficient motor control solution that is easy to install, configure, and maintain within Rockwell Automation control systems.

The 193-EC2AD​ also delivers valuable operational visibility through its status and trip indication features, giving maintenance personnel immediate insight into both normal operation and fault conditions. With the ability to distinguish between different types of motor faults, the relay helps technicians move beyond simply resetting a nuisance trip and instead diagnose the underlying cause—whether it is a genuine overload, a supply-side phase problem, or a developing mechanical issue in the driven equipment. By combining rock-solid protection with intelligent diagnostics, the 193-EC2AD​ reduces unplanned downtime, extends motor insulation life, and lowers the total cost of ownership of the motor-driven assets it protects.

Technical Specifications