ABB RXIDK 2H 1MRK000838-HA Two‑Stage Over‑Current Protection Relay

CT secondary rated: 1 A / 5 A configurable

System frequency: 50 Hz / 60 Hz

Auxiliary supply: Wide‑range DC auxiliary power supply

Current setting range: 0.5‑10 A adjustable

Time‑delay range: 0.1‑30 s adjustable for each stage

Reset mode: Manual / automatic reset selectable

Output contacts: Multiple change‑over relay contacts for trip and alarm outputs

Indicators: LED indicators for start, trip and power status

Mounting: Plug‑in module for 19‑inch standard protection rack

Operating temperature: −25 ℃ ~ +70 ℃

Storage temperature: −40 ℃ ~ +85 ℃

Humidity: 5‑95 %RH non‑condensing

EMC compliance: IEC 60255‑22‑1 /‑22‑2 /‑22‑3

Certifications: CE, IEC 60255 approval

Two‑stage independent over‑current protection.

Stage 1: selectable definite‑time or inverse‑time delay characteristic.

Stage 2: definite‑time delay over‑current protection.

Adjustable current threshold and time‑delay parameters for each protection stage.

Trip and alarm relay contact output, local LED operation status indication.

Continuous hardware self‑diagnosis for internal circuit fault detection.

Manual or automatic reset mode for protection operation.

Parameter setting completed by potentiometers and DIP switches on front panel.

Plug‑in installation inside 19‑inch standard protection rack. Strictly comply with CT polarity for secondary wiring, strictly prohibit CT secondary open‑circuit risk. Auxiliary power supply shall be kept within rated voltage range. After module replacement, complete protection setting verification, simulation test for each protection stage, check trip‑alarm contact action. Confirm no self‑diagnosis fault indication.

Over‑current backup protection for generators, transformers and transmission‑line bays in thermal‑power plants, hydropower plants and utility substations.