Part Number: REF601BE446BD1NH
- Brand: ABB

- Product Series: REF601 Protection Relay Series

- Relay Type: Numerical Overcurrent & Earth Fault Protection Relay

- Core Application: Medium and low voltage power distribution systems, protection of transformers, motors, feeders, and distribution lines in industrial plants, commercial buildings, and power utilities

Control Technology: Microprocessor-based numerical protection, high-precision measurement and control algorithm

Input Power
- Supply Voltage Range: 110-240V AC/DC ±10%

- Power Supply Frequency: 50/60 Hz (for AC supply)

- Power Consumption: ≤15 VA (AC supply); ≤10 W (DC supply)

- Power Supply Protection: Reverse Polarity Protection, Over-Voltage Protection (280V AC/DC Max)

Output Parameters
- Rated Current Input: 1A or 5A AC (Selectable via Configuration)

- Current Measurement Range: 0.1-20 x I_n (I_n = Rated Current)

- Voltage Measurement Input: 100V/110V/220V/400V AC (Line-Line or Line-Neutral)

- Protection Output Contacts: 4 x SPDT (Single Pole Double Throw) Relay Contacts

- Contact Rating: 250V AC @ 5A (resistive load); 30V DC @ 5A (resistive load)

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