Overview

The ABB AFO4LE 1KHL015545R0002 Motor Protection Relay is designed for high-performance monitoring and protection of industrial motors. Built in Switzerland, it delivers rapid fault response to prevent equipment damage, reduce downtime, and sustain operational efficiency. Its compact structure and versatile protection logic make it suitable for a wide range of motor-driven systems.

Additionally, the AFO4LE supports multiple industrial communication protocols, enabling smooth integration into advanced automation networks. Its rugged construction ensures dependable operation in harsh industrial environments where heat, vibration, or electrical noise may be present.

For example, in a conveyor-driven production line, the AFO4LE can detect overload conditions and initiate controlled shutdowns to avoid component failures and production interruptions.

Technical Data

Typical Applications

• Pumps & Compressors — Protection against overload and phase faults

• Conveyor Systems — Monitors operating condition and initiates fault response

• HVAC Systems — Ensures safe operation of fans, chillers, and blowers

• Industrial Machinery — Safeguards motors in packaging, textile, and assembly machines

• Water Treatment — Protects motors in filtration, aeration, and dosing equipment

The AFO4LE’s protective intelligence and compact footprint make it a popular choice for OEM solutions and retrofit modernization.

FAQ

Q: What motor protections are supported?
A: Overload, phase failure, and thermal overload protection.

Q: What current capacity does it support?
A: Motors rated from 0.1 to 63 A.

Q: Does it support communication protocols?
A: Yes — MODBUS and CANopen for network integration.

Q: Is it suitable for rugged environments?
A: Absolutely — it is built to withstand demanding industrial conditions.

Q: How long is the warranty?
A: ABB provides a 12-month warranty.