ABB RET670 1MRK004816-CB Transformer Protection Relay Analog Input Terminal Board Expandable I/O: Supports digital/analog I/O

Expandable I/O: Supports digital/analog I/O modules and relay extensions

Reliable Communication Interfaces: Supports Ethernet-based connectivity

RAM Slot: Allows for memory expansion to meet system requirements

Conductor: Multi‑strand bare or tinned copper (Class 5/6 per VDE‑0295)

Mounting Options: 19-inch rack or DIN rail

ABB RET670 1MRK004816-CB Transformer Protection Relay Analog Input Terminal Board Expandable I/O: Supports digital/analog I/ODescription The ABB RET670 (1MRK004816 CB) is a high end transformer protection and control relay from the Relion series. It is engineered for complex high voltage applications requiring differential protection, breaker control, and advanced monitoring. Specifications Product Type: Transformer Protection Relay Part Number: 1MRK004816 CB Series: Relion RET670 Protection Scope: 3 winding transformer with single breaker configuration Communication