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Digital motor current protection relay EOCR-DSD
NegotiableUpdate on 05/14
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Overview
EOCR-DSD is a new generation digital current protection relay launched by Schneider Electric, which integrates multiple motor protection functions. It was officially launched in July 2025, aiming to replace the original multiple models and provide customers with more integrated and intelligent solutions. General agent in China: Tangshan Hanya Electrical Equipment Co., Ltd. Digital motor current protection relay EOCR-DSD
Product Details
EOCR-DSD is a new generation of digital current protection relay launched by Schneider Electric in South Korea. It was officially launched on July 14, 2025 and can replace multiple old models such as EOCR-AR, EUCR, DS, DG, DZ, providing comprehensive protection and monitoring solutions for low-voltage motors. General agent in China: Tangshan Hanya Electrical Equipment Co., Ltd.
Digital motor current protection relay EOCR-DSD
EOCR-DSD is a new generation digital current protection relay launched by Schneider Electric, which integrates multiple motor protection functions. It was officially launched in July 2025, aiming to replace the original multiple models and provide customers with more integrated and intelligent solutions.
Definition and core functions
EOCR-DSD is a comprehensive protection device designed specifically for low-voltage motors, whose core value lies in integrating previously dispersed multi model protection functions into a single product. Specific functions include:
1. Comprehensive fault protection: supports multiple protection types such as overcurrent, undercurrent, locked rotor, phase failure, reverse phase, and current imbalance, and integrates zero sequence current and residual current (grounding) protection functions without the need for additional dedicated devices.
Flexible protection mode: It combines both timed and inverse time protection modes, and can select the appropriate protection curve according to different load characteristics.
2. Diagnostic function: Built in event recording function, which can display and store the specific reasons for protective actions in real time, greatly facilitating the rapid diagnosis and handling of on-site faults.
3. Wide adaptability: Supports external CT (current transformer) and ZCT (zero sequence current transformer) configurations, capable of adapting to diverse system wiring and environments.
Technical parameters and typical applications
The technical parameters of this product enable it to cover a wide range of motor application scenarios:
The protection current range is wide from 0.5A to 60A, which can meet the protection needs of motors from micro to medium-sized.
The current detection accuracy has been improved to ± 5%, providing a more accurate protection benchmark.
With its integration and adaptive protection capabilities, EOCR-DSD is expected to be widely used in various fields such as factory automation, OEM (Original Equipment Manufacturer) equipment, pump systems, HVAC (Heating, Ventilation and Air Conditioning), and power system retrofitting.
Brand and Market Information
Brand Background: EOCR-DSD is released by Schneider Electric. Schneider Electric is a French company, and its business in Korea may be handled by affiliated companies or agents. The EOCR product line was originally the Samwha brand in South Korea, which was acquired by Schneider in 2001.
China market agent: The promotion and sales of this product in the Chinese market are handled by the China Operations Center of Tangshan Hanya Electrical Equipment Co., Ltd
Product iteration timeline:
Design and validation phase: October 2024 to June 2025.
Official launch date: July 14, 2025.
Old model shutdown plan: Starting from November 2025, the original EOCR-AR, EUCR, DS, DG, DZ and other series products will gradually stop receiving new orders, and the final order processing deadline is December 2025. Schneider and the agent suggest that customers plan inventory adjustments and product replacement plans in advance.
Digital motor current protection relay EOCR-DSD
core functionality
Comprehensive protection typeCovering fault protection such as overcurrent, undercurrent, locked rotor, phase failure, reverse phase, and current imbalance, while integrating zero sequence current and residual current protection, suitable for various low-voltage motor application scenarios.
Dual protection modeCombining both timed and inverse time protection modes, the protection strategy can be flexibly selected according to different types of faults, improving the accuracy and flexibility of protection.
Event recording functionBuilt in event recording module, capable of real-time display and storage of protection action reasons, facilitating on-site fault diagnosis and analysis, and shortening fault troubleshooting time.
EOCR-DSDFlexible adaptation configurationSupports external CT (current transformer) and ZCT (zero sequence current transformer) configurations, which can adapt to different system environments and meet diverse motor protection needs.
EOCR-DSD motor protectorperformance parameters
Current protection range: 0.5A-60A
Current detection accuracy:±5%
protected mode:Fixed time limit, inverse time limit
power control:AC/DC 24-240V (suitable for various power supply scenarios)
Output contact:Usually 1a1b or 2a, meeting different control requirements
Installation method:Supports DIN rail installation and panel installation
Core advantages of EOCR-DSD motor protector
High functional integrationIntegrate the core functions of multiple old models, reduce customer selection complexity, lower inventory pressure, and improve overall usage efficiency.
High precision and wide rangeThe current detection accuracy reaches ± 5%, and the protection range is extended to 0.5A-60A, which can adapt to the protection requirements of different power motors.
Convenient fault diagnosisThe event recording function can quickly locate the cause of faults, reduce downtime, and improve the continuity and reliability of equipment operation.
strong adaptabilitySupports external CT and ZCT configurations, which can flexibly adapt to different system environments without the need to replace protective devices due to system differences.
Application scenarios
Suitable for various industrial automation fields, such as protection and control of low-voltage motor equipment such as water pumps, fans, compressors, and conveyor belts, especially suitable for occasions with high requirements for motor protection, precise fault diagnosis, and flexible protection strategies. It can effectively prevent motor damage due to faults, extend motor service life, and ensure stable production operation.
EOCR, also known as Electronic Over Current Relay, is an intelligent motor comprehensive protector under Schneider Electric (formerly Sanhe, South Korea). It is used to comprehensively protect three-phase/single-phase motors from overload, phase loss, locked rotor, grounding and other faults and damages. The brand was originally owned by SAMWHA in South Korea and was acquired by Schneider Electric in 2001. It is now Schneider's core motor protection product.
Tangshan Hanya Electrical Equipment Co., Ltd. is the core agent of Schneider EOCR (formerly known as Sanhe) motor protector marketing service center in China. Responsible for the sales and technical services of products in the national market, we are a professional service provider for the national market. The company specializes in Schneider EOCR's full range of motor protection products, covering multifunctional motor protection functions such as overload, phase loss, locked rotor, three-phase imbalance, undercurrent, grounding, and reverse rotation. They are widely used in industries such as metallurgy, power, petroleum, chemical, cement, coal, and machinery manufacturing.
We provide original factory guarantees, professional selection and configuration, on-site debugging guidance, fault solutions, and after-sales support to customers across the country. With stable and reliable product quality, sufficient stock supply, and fast response services, we help customers ensure the safe operation of motor systems, reduce equipment failures, and improve operation and maintenance efficiency. We are a long-term partner in the field of industrial motor protection.
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