Transmission & Distribution Relays
Transmission & Distribution Relays
ABB Auxiliary Relays
- Reliable control, signalling, and automation for electrical systems
- Multiple NO/NC contact configurations; voltage range: 24–250 V AC/DC
- High-speed tripping (3–4 ms) for fast response
- Handles up to 10 A (DC) or 20 A (AC)
- Robust, compact design—vibration and shock resistant, >1 million mechanical operations
- Flush, plug-in, and sheet-metal mountings available
- IEC 60255 certified for global safety standards
- Ideal for: circuit breaker tripping, signalling, automation, and supervision in switchgear/substations
ABB Numerical Relays
- Digital, next-generation relays for advanced protection and automation*
- Protect feeders, transformers, motors, and generators
- Supports all major protocols: IEC 61850, Modbus, IEC 60870-5-103
- Multifunction protection: overcurrent, earth fault, voltage, frequency, distance, transformer, and motor
- Detailed event/fault logging and waveform recording
- Programmable logic; seamless integration with SCADA/DCS
- Self-monitoring and diagnostics ensure high reliability
- Ideal for: substations, industrial plants, remote monitoring, and automation
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