Product Overview
The ABB 81EU01E-E GJR2391500R1210 is an advanced electronic trip unit designed for use with ABB’s EMAX and 3WL series low-voltage power circuit breakers.As a key component in electrical protection systems,the ABB 81EU01E-E GJR2391500R1210 delivers precise and reliable protection for electrical circuits in industrial,commercial,and infrastructure applications.
This trip unit belongs to ABB’s PR121 family of microprocessor-based protection relays,offering comprehensive protection functions including long-time(L),short-time(S),and instantaneous(I)overcurrent protection.It allows for precise adjustment of trip thresholds and time delays,enabling system designers to tailor protection settings to specific load and network conditions.The ABB 81EU01E-E GJR2391500R1210 is widely used in main distribution boards,motor control centers,and critical power systems where selective coordination and fault protection are essential.
Designed for integration with ABB EMAX and 3WL molded case and air circuit breakers,the ABB 81EU01E-E GJR2391500R1210 ensures optimal circuit protection while supporting system diagnostics and monitoring capabilities.It plays a crucial role in preventing equipment damage,reducing downtime,and enhancing overall electrical system reliability.
Technical Specifications
Parameter Name Parameter Value
Product Model 81EU01E-E GJR2391500R1210
Manufacturer ABB
Product Type Electronic Trip Unit/Microprocessor Relay
Series PR121
Compatible Breakers ABB EMAX,3WL Series
Protection Functions L(Long-Time),S(Short-Time),I(Instantaneous)
Rated Current Range Adjustable(typically 0.4A to 1.6A)
Adjustable Trip Settings Yes
Display Digital LCD
Communication Interface Optional
Operating Voltage Supplied via Current Transformers(CTs)
Mounting Type Plug-in Module
Certifications CE,UL,IEC 60947-2
Main Features and Advantages
The ABB 81EU01E-E GJR2391500R1210 stands out as a high-performance electronic trip unit that enhances the protection and control capabilities of low-voltage power circuit breakers.With its microprocessor-based architecture,it provides highly accurate and customizable protection settings,ensuring optimal performance under varying load conditions.
One of the key advantages of the ABB 81EU01E-E GJR2391500R1210 is its LSI(Long-time,Short-time,and Instantaneous)protection functionality.This allows users to precisely configure trip characteristics to match specific electrical system requirements,improving selectivity and minimizing unnecessary tripping.The device also supports real-time current monitoring and fault diagnostics,which aids in troubleshooting and maintenance planning.
The ABB 81EU01E-E GJR2391500R1210 is designed for seamless integration with ABB EMAX and 3WL series circuit breakers,offering plug-and-play installation and compatibility with existing protection systems.Its modular design allows for easy replacement and upgrade without the need for extensive rewiring or system downtime.
Additionally,the ABB 81EU01E-E GJR2391500R1210 is built to withstand harsh electrical environments,ensuring long-term reliability and performance stability.It is ideal for applications where precision protection and system continuity are critical,such as data centers,hospitals,industrial plants,and large commercial facilities.
Application Fields
The ABB 81EU01E-E GJR2391500R1210 is widely used in a variety of industrial and infrastructure applications where precise overcurrent protection and system coordination are required.In power distribution systems,it is commonly installed in main switchboards,motor control centers(MCCs),and sub-distribution panels to protect critical circuits from overloads and short circuits.
In industrial plants,the ABB 81EU01E-E GJR2391500R1210 is used to protect motors,transformers,and other heavy-duty electrical equipment.Its adjustable protection settings make it ideal for applications where load variations are frequent,ensuring reliable operation without nuisance tripping.
Commercial buildings and data centers benefit from the ABB 81EU01E-E GJR2391500R1210 due to its ability to support selective coordination studies and ensure continuity of power during fault conditions.Hospitals,airports,and other mission-critical facilities rely on this trip unit to maintain power integrity and protect sensitive electrical systems.
Moreover,the ABB 81EU01E-E GJR2391500R1210 is also used in renewable energy systems such as solar inverters and wind turbine substations,where circuit protection and fault detection are essential for system reliability and safety.
Related Products
ABB 81EU01E-E GJR2391500R1220:Similar to the ABB 81EU01E-E GJR2391500R1210,but with extended protection features and higher current range.
ABB 81EU01E-E GJR2391500R1230:High-end trip unit with ground fault protection(LSIG),suitable for advanced protection schemes.
ABB 81EU01E-E GJR2391500R1110:Entry-level trip unit with basic LSI protection for general-purpose applications.
ABB PR122/P-LSIG:Advanced trip unit with programmable protection and communication interface for integration with SCADA systems.
ABB 3WL91100AA35:Retrofitting kit for upgrading older 3WL circuit breakers with modern electronic trip units.
ABB EMAX E1.2 Trip Unit:Integrated protection unit for EMAX molded case circuit breakers with similar functionality to the ABB 81EU01E-E GJR2391500R1210.
ABB 81EU01E-E GJR2391500R1211:Trip unit with enhanced diagnostics and display features for advanced monitoring.
ABB 3WL91100AA30:Mounting and connection kit for PR121 series trip units.
ABB 81EU01E-E GJR2391500R1212:Trip unit with communication module for integration into energy management systems.
ABB 3WL91100AA33:Auxiliary power supply module for PR121 trip units in low-current applications.
Pre-installation preparation
Before installing the ABB 81EU01E-E GJR2391500R1210,ensure that the circuit breaker is de-energized and locked out to prevent accidental energization during installation.Verify that the breaker model is compatible with the ABB 81EU01E-E GJR2391500R1210 and that the existing wiring and mounting configuration supports the plug-in module.Prepare the necessary tools for safe installation and ensure that the environment is clean and dry to avoid damage to sensitive electronics.It is also recommended to check the breaker’s current transformers(CTs)and secondary wiring for proper connection and insulation before inserting the ABB 81EU01E-E GJR2391500R1210.
Maintenance recommendations:To ensure long-term reliability of the ABB 81EU01E-E GJR2391500R1210,perform regular visual inspections to check for signs of overheating,dust accumulation,or loose connections.Periodically verify the trip settings and protection parameters using ABB configuration tools to ensure they align with system requirements.If the ABB 81EU01E-E GJR2391500R1210 is part of a critical protection system,consider scheduling periodic calibration and functional tests as part of preventive maintenance.In the event of a fault or trip event,review the trip history and diagnostic data stored in the unit to identify the cause and prevent future occurrences.
Product Guarantee
We guarantee that every ABB 81EU01E-E GJR2391500R1210 unit we supply is 100%authentic,fully functional,and sourced from authorized ABB distributors or verified OEM channels.Each ABB 81EU01E-E GJR2391500R1210 undergoes rigorous testing and inspection before delivery to ensure compliance with ABB’s strict quality standards.We offer a comprehensive warranty and dedicated technical support to assist with installation,troubleshooting,and replacement services.Whether you’re upgrading protection systems in industrial plants,commercial buildings,or critical infrastructure,the ABB 81EU01E-E GJR2391500R1210 is backed by our commitment to product excellence and customer satisfaction.
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