Compatibility of Arc Flash Sensors from Other Brands with PowerLogic A125

Issue:

Can arc flash sensors from other manufacturers be used with the PowerLogic A125 arc flash protection relay?

Product:

PowerLogic A125 Arc Flash Protection Relay

Environment:

Low- and medium-voltage switchgear applications using PowerLogic A125 for arc flash protection.

Cause:

Arc flash sensors are critical components for fast and reliable detection of arc incidents. They are designed with specific electrical characteristics, wiring arrangements, and sensitivity settings that match the relay’s internal logic and supervision functions. Using non-proprietary sensors may lead to incompatibility, incorrect operation, or failure of the protection system.

Resolution:

The sensors for this product are proprietary and specific, and it is not recommended to mix or use other sensor brands because the relay needs specific outputs and configurations. It is suggested that the clients contact the specific manufacturers so they can provide the available options within their product range.

For PowerLogic A125, Schneider Electric offers dedicated sensors such as VA1 DA and VA1 EH in different versions (shielded, halogen-free, with cable lengths of 6 m or 20 m). Refer to the Order Information section of the manual for the commercial codes, available in the next link: https://www.se.com/us/en/download/document/A125_EN_M_01A/

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