ABB 1SVR730 840 R0500 Current Monitoring Relay

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Product Overview

The ABB 1SVR730840R0500 is a high-precision Current Monitoring Relay designed to monitor AC or DC circuit currents and trigger alarms or control actions when current exceeds set limits.
It is widely used for industrial automation, distribution systems, pumps, fans, motors, and other equipment for overcurrent or phase-loss protection.
The relay provides reliable switching output and can interface with contactors, PLCs, or control modules for automated control and safety protection.

Technical Specifications

Key Features

• High-precision current monitoring (±1% FS)

• Fast response (≤50 ms) for timely alarms or control actions

• Relay output for interfacing with contactors or PLCs

• Wide measurement range (0.05–5 A) for different load currents

• Easy DIN rail installation for maintenance and replacement

• Industrial-grade reliability: temperature and vibration resistant

Applications

• Industrial automation control systems

• Motor, pump, and fan protection

• Overcurrent monitoring in distribution systems

• PLC and contactor interlocking control

• Energy management system current monitoring

• Industrial equipment protection and alarm systems

Installation & Handling Notes

• Ensure the relay rated voltage and current match the circuit before installation.

• Secure DIN rail mounting and correct wiring.

• Avoid high humidity, high temperature, and corrosive environments.

• Regularly check relay output and status indicators.

• Disconnect power before maintenance or replacement.

• Set measurement range and alarm points according to actual load requirements.

The structure and details of the product：

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