Dielectric strength: 2kV/1min, impulse voltage 5kV (1.2/50 μ s), insulation resistance>100M Ω.
Protection level: front panel IP54, back terminal IP20.
Interface and Communication
Input/output
Analog input: 4-channel current input (3-phase+grounded), supporting 1A/5A CT.
Binary input: 4 channels, configurable for circuit breaker position, trip command, etc.
Output contacts: 6 channels (2 power outputs+4 signal outputs), with a maximum switching capacity of 240V/8A.
communication interface
Optional MODBUS RTU or IEC 60870-5-103 protocol, RS485 two-wire connection, supports remote monitoring and parameter configuration.
Ordering and Accessories
Order coding rules
Example: REF601 A E4 46 B D 1 B H, including relay type, standard (ANSI/IEC), current input specifications, communication protocol, application configuration, and other information.
Accessory
Communication card: CIM601BNNNNBANXG, used to add MODBUS or 103 protocol interfaces.
Summarize
ABB REF601/REJ601 relays provide a solution for medium voltage distribution systems that integrates protection, control, and monitoring through modular design and flexible configuration. Its core advantages lie in:
Comprehensive protection: covering multiple protection functions such as overcurrent, ground fault, thermal overload, etc., supporting custom characteristic curves.
Strong adaptability: Three application configurations are suitable for different scenarios, and the compact design meets space constraints.
High reliability: Self supervision and trip circuit monitoring enhance system safety, while EMC and environmental testing ensure industrial grade durability.
Ease of operation: Local HMI and hierarchical permission management simplify on-site debugging, and communication interface supports remote operation and maintenance.
Suitable for urban distribution networks, industrial power systems, and other scenarios, especially for situations that require efficient fault protection and power supply reliability.
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