The Eaton EBR-3Z-2B0EA0-B (EBR-3000 series) is a bus differential protection relay rated 10 Amp for high‑impedance three‑phase differential protection. Designed for switchgear and power system protection, it supports wide auxiliary supply ranges (40–250 Vac / 19–300 Vdc) and Profibus‑DP (RS485/D‑SUB) communications, making it suitable for protection relay applications in substations, generator sets, transformers and large motor installations.

Key Features

High‑impedance three‑phase bus differential protection for secure fault discrimination.
Restricted earth‑fault and balanced earth‑fault protection for grounded‑wye systems.
Profibus‑DP communications via RS485/D‑SUB for integration with automation systems.
Wide auxiliary supply: 40–250 Vac and 19–300 Vdc for flexible installation.
Low power consumption (approx. 10 W / 17 VA) and operation on 50/60 Hz.
Standard mounting with ambient capability down to -20°C and up to 60°C.

Technical Specifications

Manufacturer	Eaton
Commercial Reference	EBR-3Z-2B0EA0-B
Component	Bus Differential Relay (EBR-3000)
Auxiliary Supply	40–250 Vac / 19–300 Vdc
Communications	Profibus‑DP (RS485 / D‑SUB)
Power Consumption	Approx. 10 W / 17 VA
Frequency	50 / 60 Hz
Mounting	Standard panel mounting
Operating Temperature	-20°C to 60°C

Applications

Used for busbar protection in switchgear, differential protection of transformers and generators, motor differential schemes, and restricted earth‑fault protection in grounded‑wye windings.

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