• Model: REF615K
• Brand: ABB
• Series: Relion 615
• Core Function: Feeder protection and control with voltage-based functions
• Type: Numerical Protection IED
• Key Specs: Non-directional overcurrent/earth-fault, voltage protection, IEC 61850, -40 to +70°C

Condition: New Original (New Surplus), not refurbished

Product Introduction

Substation teams often need more than basic overcurrent when feeders include distributed generation or capacitor banks. The ABB REF615K adds voltage and frequency elements that address those scenarios directly in distribution networks.

This configuration delivers non-directional overcurrent, earth-fault, and undervoltage/overvoltage protection for overhead lines and cable feeders. It fits radial, looped, or meshed systems in utility and industrial plants. The drawout design supports quick swaps while IEC 61850 handles modern station bus integration. In field use, these units help maintain stability during voltage dips or islanding events.

Pick the ABB REF615K when your coordination study calls for integrated voltage supervision alongside current-based protection. It typically achieves instantaneous trip times under 40 ms. Verify the full order code and firmware match before installation to avoid surprises.