Allen-Bradley 193-EECB E1 Plus IEC Overload Relay

The Allen-Bradley 193-EECB, also cataloged as the 193-EECB IEC Overload Relay, operates as a dedicated hardware component for motor overload protection, phase-loss detection, and fault-induced trip execution within motor starter assemblies. The relay provides adjustable thermal overload protection from 1.0 A to 5.0 A and is designed for direct integration with Allen-Bradley 100-C series contactors.

Hardware Specifications

Motor Protection and Phase Loss Detection

The 193-EECB continuously monitors motor current and compares measured values against the configured overload setting. When current exceeds the selected protection threshold for a sufficient duration, the relay initiates a trip event to protect connected motor windings and associated equipment.

The fixed Class 10 tripping characteristic is intended for standard motor starting applications and is designed to trip within approximately 10 seconds at six times the configured current setting. Integrated phase-loss protection permits accelerated fault detection under single-phasing conditions, reducing thermal stress on three-phase motors.

The relay mounts directly to compatible Allen-Bradley 100-C series contactors, forming a combined motor starter assembly without additional mounting adapters.

Firmware Flash Compatibility

The 193-EECB is an electromechanical overload protection device and does not depend upon controller firmware compatibility. The relay interfaces directly with motor control circuits through its auxiliary contacts and can be incorporated into PLC-controlled, relay-based, or conventional motor starter architectures.

Its auxiliary contact arrangement provides fault indication and control circuit interruption functions during overload or phase-loss trip events.

Frequently Asked Questions

Q: What motor protection range is supported by the 193-EECB?
A: The relay provides an adjustable overload setting range from 1.0 A to 5.0 A.

Q: Does the relay provide phase-loss protection?
A: Yes. The device incorporates built-in phase-loss protection and can trip in approximately 3 seconds under phase-loss conditions.

Q: Can the relay be configured for automatic reset?
A: Yes. The reset mode is user-selectable and can be configured for either manual or automatic reset operation.

Field Installation Guidelines

• Verify that the motor full-load current falls within the relay adjustment range of 1.0 A to 5.0 A before installation.

• Mount the relay directly to compatible 100-C09 through 100-C23 contactors according to the starter assembly design.

• Adjust the overload setting to match the motor nameplate full-load current.

• Use conductors within the specified power and control terminal wire ranges.

• Verify correct operation of the auxiliary contacts during commissioning.

• Confirm manual or automatic reset mode selection before energizing the motor circuit.

• Periodically inspect terminal tightness, overload settings, and trip functionality during preventive maintenance procedures.