Eaton EBR-3Z-2B0KB0-A Bus differential relay - High-Z
Part Number: EBR-3Z-2B0KB0-A
Quick Summary
The Eaton Bus differential relay protects electrical buses by detecting differential current in high-load, low-impedance networks. When faults occur, accurate isolation minimizes outages and reduces equipment damage, addressing a common pain point for substations and switchgear owners. Explicit SIL, CE, or IP ratings are not listed in this specification, so verify certification status with Eaton for your exact regulatory requirements. This model, featuring 61850/MODBUS/DNP3 communications and conformal coating, supports standard mounting and scalable protection architectures, helping you modernize protection schemes without replacing existing infrastructure. By combining high-impedance protection with flexible communications, it delivers reliability, faster fault isolation, and a lower total cost of ownership for industrial power systems.
Product Information
Extended Description
EBR-3Z-2B0KB0-A Eaton: Eaton, Bus differential relay , 3000 High Impedance Bus Differential Relay and EBR-Z High Impedance Module in common bezel, 61850/MODBUS/DNP3 (FO LC), Conformal Coating, Standard Mount, 5.2kJ
Product Name
Eaton Bus differential relay
Catalog Number
EBR-3Z-2B0KB0-A
UPC
786679195758
Product Length/Depth
7.49 in
Product Height
8.62 in
Product Width
13.64 in
Product Weight
12.7 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Compliances
Contact Manufacturer
Type
Bus differential relay
Burden
10 W / 17 VA
Frequency rating
50/60 Hz
Mounting method
Standard
Contact Rating
5 A ac / dc
Operating temperature
-20° to 60°C
Feature: High-impedance bus differential protection minimizes nuisance trips by distinguishing legitimate faults from normal operating transients. Business Impact: Fewer unplanned outages reduces field service time and equipment wear, lowering lifecycle costs. Application: Ideal for medium- to large-size switchgear and feeder protection in substations, where selective clearance is critical. Feature: 61850, MODBUS, and DNP3 communications enable seamless data exchange with modern protection schemes. Business Impact: Accelerates integration with SCADA and automation platforms, shortening commissioning and enabling scalable protection architectures. Application: Retrofit or new installations requiring interoperable IEDs in control rooms and distributed energy systems. Feature: Conformal coating enhances reliability in challenging environments. Business Impact: Resistance to moisture, dust, and corrosive atmospheres extends useful life in industrial and outdoor installations. Application: Harsh manufacturing floors, outdoor substations, and equipment located in challenging climate zones. Feature: Standard mounting and a common bezel with EBR-Z high-impedance module simplify installation. Business Impact: Reduces field wiring complexity and commissioning time while ensuring consistent mechanical fit. Application: Retrofit projects and new builds where space and alignment with existing panels matter. Feature: 5 A AC/DC contact rating and a 10 W / 17 VA burden provide direct and efficient signaling to control circuits. Business Impact: Lower power draw on the protected bus and improved reliability for signaling and protection logic. Application: Control panels and protection circuits in switchgear and electrical rooms. Feature: Wide operating temperature (-20°C to 60°C) supports global deployment. Business Impact: Ensures performance across diverse climates, reducing the need for site-specific variants. Application: Global installation programs and industrial facilities with varying ambient conditions.
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FAQs
Yes. The EBR-3Z-2B0KB0-A is designed for standard mounting with a common bezel that accepts the EBR-Z High Impedance module, simplifying retrofits. It fits typical panel depths (7.49 in), heights (8.62 in), and widths (13.64 in), and uses conventional wiring practices. Before installation, verify panel clearance, connector compatibility, and follow Eaton’s installation guidelines.
Key electrical performance specs include operation at 50/60 Hz, a 5 A AC/DC contact rating, and a burden of 10 W / 17 VA. It operates from -20°C to 60°C and supports 61850/MODBUS/DNP3 communications. These parameters determine how the relay interfaces with protection logic, signaling circuits, and SCADA systems during fault conditions.
Yes. This relay is built for high-impedance bus differential protection, leveraging a common bezel and EBR-Z module for robust, selective fault isolation. It is suitable for substations and switchgear feeders where impedance-based protection improves coordination and reduces misoperations. Always confirm site requirements and coordinate with protection schemes to ensure compatibility with existing relays.
The relay supports 61850, MODBUS, and DNP3 protocols, enabling interoperability with modern protection and control systems. This makes data collection, alarm management, and remote signaling straightforward for plant and substation automation projects. When planning integration, map data objects to your SCADA masters and ensure network security and protocol version compatibility.
Warranty follows Eaton Selling Policy 25-000: one year from installation or eighteen months from shipment, whichever comes first. For service, replacement, or technical support, contact Eaton or your distributor; ensure you record installation dates and serial numbers. Regular preventive maintenance and firmware updates, if available, can extend system reliability.