Schneider Electric PowerLogic™ A5V321 Advanced Arc Flash Protection Relay

The Schneider Electric PowerLogic™ A5V321 Advanced Arc Flash Protection Relay is built to provide high-speed arc flash protection for low and medium-voltage electrical systems where fast fault clearance is critical. Designed for complex switchgear installations, the relay continuously monitors optical arc sensors and current inputs to detect internal arc faults and initiate rapid tripping before extensive damage can occur.

Arc flash incidents can develop in a fraction of a second, placing both equipment and personnel at risk. The PowerLogic A5V321 responds by combining optical light detection with current verification, helping ensure accurate fault identification while reducing the possibility of unnecessary tripping. Its fast operating time helps minimise arc energy, improve equipment protection and reduce system downtime.

The relay is suitable for utility substations, industrial plants, data centres and other critical power installations where dependable arc flash protection is required. Its flexible architecture, multiple sensor support and simple commissioning make it a practical solution for both new projects and switchgear upgrades.

Specifications

• Manufacturer: Schneider Electric
• Product Family: PowerLogic™ A5 Arc Protection
• Model: A5V321
• Relay Type: Advanced Arc Flash Protection Relay
• Protection Application: Low and Medium-Voltage Switchgear
• Protection Method: Optical Arc Detection with Current Verification
• Arc Sensor Support: Multiple Optical Arc Sensors
• Current Inputs: Supported
• High-Speed Trip Outputs: Supported
• Digital Inputs and Outputs: Supported
• Event Recording: Supported
• Self-Diagnostics: Continuous Monitoring
• Human Machine Interface: LED Status Indicators, Push Buttons and Front Display
• Communication Support: Available
• Mounting: Panel Mounting

Features

• Advanced arc flash protection for critical switchgear applications.
• High-speed arc fault detection using optical sensors and current verification.
• Fast trip outputs help reduce arc flash energy and equipment damage.
• Supports multiple arc sensors for wider protection coverage.
• Continuous relay self-monitoring for dependable operation.
• Event recording simplifies maintenance and fault analysis.
• Compact design suitable for new installations and retrofit projects.
• Easy setup and commissioning with intuitive configuration.
• Front-panel status indication for quick diagnostics.
• Designed for reliable operation in demanding industrial and utility environments.

Applications

• Medium-voltage switchgear
• Low-voltage switchboards
• Utility substations
• Industrial power distribution systems
• Data centres
• Oil and gas facilities
• Mining and mineral processing plants
• Manufacturing industries
• Water and wastewater treatment plants
• Critical infrastructure and power generation facilities

The Schneider Electric PowerLogic™ A5V321 Advanced Arc Flash Protection Relay provides fast and dependable protection against arc flash faults in modern electrical systems. Its advanced detection technology, flexible installation options and reliable performance make it well suited for applications where equipment protection and personnel safety are equally important.