Protective Relay Systems
Reliable real-time protection and control for critical power systems. Ensure operational safety, minimize downtime, and maintain system integrity with our advanced protective relay systems.
Industries We Serve
View AllTailored solutions for diverse sectors and challenges.
Excitation Systems
Precise voltage control for reliable generator performance. Our excitation systems deliver accurate, responsive control of generator field voltage to ensure stability, reliability, and optimal performance across all operating conditions.
Voltage Regulators
Consistent, stable voltage control for generators and power systems. Our voltage regulators maintain precise voltage output to protect equipment, enhance quality of power, and ensure system stability.
Genset Controls
Our genset control systems offer complete command over engine and generator functions, delivering reliable automation, protection, and monitoring for your systems.
Software
Modern digital devices offer a wide range of configurable settings to meet diverse application needs. With so many parameters and functions available, it is essential to have a user-focused interface. Protective relays and digital devices rely on advanced algorithms and filtering techniques to deliver accurate real-time decisions.
Custom Transformers
Engineering-to-order transformers for specialized power applications. Our custom transformers are designed and built to meet your exact electrical, mechanical, and environmental requirements.
Accessories
Essential accessories for enhancing and completing your power system. Maximize the performance, reliability, and flexibility of your power equipment with our full range of accessories.
View All Products
View all our Basler products.
Product Selector
Our product selector can help identify the best Basler product for your new or replacement application. If you have any questions, please contact us!
Manuals
Find Instruction Manuals, Protocol Manuals, Quick Start Guides, Firmware/Software Revision History, and more.
Certifications
View all Agency Certifications.
Software
View our BEST software suite, Configuration Files, Modbus TCP Discovery, and more.
Templates
View Application Templates and Application Components, HMI Files and Templates, Logic Schemes, and more.
Applications
Get Application Guides, Application Notes, and Product Notes.
Drawings
Drawings include Product Drawings, Mounting Accessory Drawings, and more.
Brochures
See our Product Brochures, Bulletins, and Promotional Flyers.
Case Studies
Check out our Case Studies.
View All Resources
View Manuals, Software, Certificates, and more.
Basler University
At Basler University, you will find a range of training resources, from in-person customer training, virtual learning, instructor-led courses, and on-demand videos.
In-Person Training
Our expert instructors offer live training on our products and services.
eLearning
Our online webinar options allow you to attend live courses led by a Basler instructor from your home or office.
On-Demand Videos
Our library of on-demand videos allows you to learn at your own pace. Find your subject of your choice, and learn as you go.
Custom Training
We offer customizable training programs tailored to meet your unique needs. Whether you're looking to deepen the understanding of specific systems, enhance troubleshooting skills, or train new employees on best practices, we will work with you to develop a program that fits your goals. Training can be delivered at your site or ours.
24/7 Technical Support
Technical phone support is available any time of the day or night, every day of the year.
Basler Services
Basler Services offers seamless solutions for both product and engineering services.
Electrical System Design
Basler Services delivers cutting-edge Electrical System Design, crafting solutions that optimize performance, safety, and efficiency tailored to your unique requirements. Their expert engineers guide you through every phase—from conceptual layouts and relay coordination to full documentation and commissioning support—ensuring a dependable, compliant electrical infrastructure.
Basler Services
Turnkey Engineering
With extensive experience delivering turnkey projects, Basler Services combines resources to offer tailored installation solutions. Clients can engage as much—or as little—as they wish, selecting only the specific installation support services that fit their needs.
Basler Services
Consulting
Basler Services offers expert consulting to optimize electrical power systems for safety, reliability, and performance. Our team works closely with clients to assess challenges and deliver tailored, cost-effective solutions.
About Us
Our core purpose is to enhance people’s lives by developing highly reliable solutions that add quality to their lives.
Locations
View Our Global Locations
Quality Programs and Certifications
Basler Electric’s Quality Policy applies to all of its manufacturing facilities and utilizes the same system designed to comply with the requirement necessary to obtain ISO certification.
Our History
From the 1940s to today, Basler is Always Innovating, Always Evolving.
Careers
Joining the Basler Team means becoming a member of a global energy technology leader who is advancing the energy transition across 145 countries. It means partnering with customers to help solve some of the most complex, mission-critical energy challenges. And, it means working for a company who values their employees and families.
Events
See our calendar of events, tradeshows, and conferences.
ES-37, Undercurrent Relay
ES ac current relays provide current monitoring and protection and may be specified for use in single-phase or three-phase applications. Three models are available: the ES-37 provides undercurrent protection, the ES-51 provides overcurrent protection, and the ES-37/51 provides undercurrent and overcurrent protection. Microprocessor-based circuitry enhances functionality and improves performance. Internal diagnostics annunciate when relay function or accuracy is compromised.
