ABB 1SAX611001R1101 Electronic Overload Relay

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1. Product Overview

The ABB 1SAX611001R1101 Electronic Overload Relay is an intelligent relay module used for motor protection in ABB three-phase contactor and motor control systems. It monitors motor current in real time, providing overload, short-circuit, and phase-failure protection, with fast response and alarm functions to ensure safe operation of motors and systems.

2. Technical Specifications (Typical)

• Model: 1SAX611001R1101

• Type: Electronic Overload Relay

• Applicable Motor Rated Current: 0.1 A – 63 A (adjustable)

• Operating Voltage: AC 230–690 V

• Operating Frequency: 50/60 Hz

• Protection Functions: Overload, short-circuit, phase-failure protection

• Adjustment Method: Electronic adjustment with settable current range

• Response Time: Fast electronic response

• Interface: Directly mounts with ABB contactors

• Mounting: DIN rail or panel installation

• Operating Temperature: ‑25 °C to +60 °C

• Protection Class: IP20

• Indication: LED status and alarm display

3. Advantages & Features

• Precise overload protection: Monitors motor current electronically for accurate protection and prevents false trips.

• Fast response: Quickly disconnects power during overload or fault to protect motors.

• Wide adjustable range: Suitable for motors with different rated currents.

• Easy installation and maintenance: Modular design, directly compatible with ABB contactors for quick replacement.

• High reliability: Industrial-grade design, suitable for high temperature, vibration, and continuous operation.

4. Typical Applications

• Industrial motor and drive system protection

• Motor starters and control cabinets

• Fans, pumps, compressors, and conveyor systems

• Industrial automation production lines

• Motor protection in power distribution systems

5. Installation & Operation Notes

1. Current matching: Ensure the relay rated current is above the motor’s normal operating current.

2. Correct wiring: Connect input and output terminals according to the manual to prevent poor contact.

3. Environmental conditions: Avoid humidity, dust, and corrosive gases; ensure proper ventilation.

4. Periodic inspection: Check relay status indicators and alarm functions for long-term reliability.

5. Compatibility with contactors: Ensure relay matches the ABB three-pole contactor to guarantee safe disconnection.