New Original Schneider VJ25511 I3DM‑WRDUWZ 0.5‑80A 3 Phase Motor Overcurrent Protector
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New Original Schneider VJ25511 I3DM‑WRDUWZ 0.5‑80A 3 Phase Motor Overcurrent Protector
Product Overview
The Schneider I3DM‑WRDUWZ, part number VJ25511, is a brand‑new original digital EOCR three‑phase motor protection relay from Schneider Electric. It adopts window‑type through‑core current sensing design with integrated current transformers, covering adjustable current measuring range of 0.5 A‑80 A. This intelligent protector provides comprehensive monitoring and protection for three‑phase asynchronous motors, widely deployed in pumping systems, conveyor belts, fan equipment, compressors and general industrial machine‑tool motor circuits. Marked as “New Original”, it represents genuine factory‑manufactured unit with complete internal sensing circuits, digital processing modules and full‑factory performance testing, free of refurbished or second‑hand assemblies. It detects abnormal operating conditions and outputs relay trip signals to cut off motor control loops and prevent motor burnout caused by electrical faults.
Main Functions
- Multi‑dimensional motor protection: Supports over‑current, under‑current, phase loss, phase unbalance, phase reversal, stall and jam protection for three‑phase motors.
- Flexible time‑delay setting: Both definite‑time and inverse‑time protection characteristics are configurable for different motor application scenarios.
- Built‑in digital display: Shows real‑time three‑phase current values, parameter settings and fault trip codes for on‑site diagnosis.
- Modbus‑RTU communication interface: Upload operating data and fault records to upper‑level monitoring systems for remote status reading and parameter modification.
- Multiple reset modes: Manual local reset, electrical remote reset and auto‑reset are selectable via parameter configuration.
- Fault memory storage: Stores multiple historical fault records including trip cause and corresponding three‑phase current data for post‑failure analysis.
- Relay output contacts: Provides alarm contact and trip contact for driving contactor control loops and external alarm devices.
- Window‑type installation: Three‑phase power cables pass directly through the built‑in CT window without additional external current transformers within 0.5‑80 A range.
Technical Characteristics
- High‑precision built‑in current sensing window, measurement accuracy within ±2 % without external CT in rated current range.
- Digital signal processing architecture, strong anti‑interference performance for industrial cabinet‑installation environments.
- Support Modbus‑RTU serial communication protocol for industrial IoT‑based motor condition monitoring.
- High‑strength flame‑retardant engineering plastic housing, compliant with IEC 60947‑4‑1 industrial standard.
- DIN‑rail mounting compatible, easy installation inside standard electrical cabinets.
- Non‑volatile memory retains fault history and parameter settings even after control power loss.
- RoHS‑compliant materials, suitable for global industrial equipment deployment.
- No built‑in ground‑fault protection function; external accessories are required if earth‑leakage protection is needed.
Core Technical Parameters
| Item | Parameter Value |
|---|---|
| Part Number | VJ25511 I3DM‑WRDUWZ |
| Product Type | Digital three‑phase EOCR motor protection relay |
| Measuring Current Range | 0.5 A‑80 A (window‑type sensing) |
| Control Supply Voltage | AC/DC 100‑240 V, 50/60 Hz |
| Protection Functions | Over‑current, under‑current, phase loss, phase unbalance, phase reversal, stall, jam |
| Time Characteristic | Definite‑time / inverse‑time configurable |
| Communication Interface | Modbus‑RTU |
| Output Contact Rating | 250 VAC, 3 A resistive load |
| Reset Mode | Manual / Remote electric / Auto‑reset configurable |
| Ambient Operating Temperature | ‑20 °C ~ +75 °C (non‑condensing) |
| Storage Temperature | ‑25 °C ~ +80 °C |
| Protection Class | IP20 (cabinet‑mount type) |
| Power Consumption | ≤7 VA |
| Weight | 460 g |
Product Dimensions
All dimension values are given in millimetres.
- Overall height: 98 mm
- Overall width: 72 mm
- Overall depth: 118 mm
- Inner window opening dimension: 3×φ22 mm for three‑phase cable passing‑through
- DIN‑rail mounting width: 72 mm
- Terminal screw specification: M3.5 screw
Note: Three‑phase power cables must pass through the corresponding CT window. Do not exceed the maximum cable outer diameter for the sensing window. Operate strictly within rated control‑supply voltage range.
10 Schneider Similar‑function EOCR‑series Digital Motor Protection Relays
Below are ten original Schneider EOCR series motor‑protection relays with comparable three‑phase motor‑monitoring and protection capabilities for diversified industrial‑motor applications:
- I3DM‑WRDUHZ: 0.5‑80 A, through‑hole type, Modbus‑RTU communication, without display panel.
- I3MZ‑WRDUWZ: 0.5‑80 A, window‑type, with ground‑fault protection function and Modbus‑RTU.
- 3DM2‑WRDUWZ: 0.5‑60 A, economical digital motor protector, window‑type sensing, without Modbus communication.
- 3FDM2‑WRDUWZ: 0.5‑60 A, window‑type, supporting stall and phase‑unbalance protection, basic‑display version.
- IFDM‑WRDUWZ: 0.5‑80 A, full‑function digital protector, Modbus‑RTU, enhanced fault‑recording capacity.
- I3MS‑WRDUWZ: 0.5‑80 A, window‑type, adding short‑circuit protection function for heavy‑duty motor loads.
- I3DM‑WRCUWZ: 0.5‑80 A, window‑type, AC 24 V control‑power‑supply variant.
- EOCR‑SSD‑05: 0.5‑6 A compact economical electronic over‑current relay for small‑power motors.
- EOCR‑SS‑30: 5‑30 A basic‑type electronic motor‑over‑current protector, no digital display.
- IFMZ‑WRDUWZ:0.5‑80 A, window‑type, full‑function model integrating ground‑fault and Modbus‑RTU communication.
WHO WE ARE
About us
Located in Kunshan, China, Atifts Technology Co., Ltd. is a well-known enterprise specializing in electronic components distribution. We specialize in the sales of global brands of industrial automation components, with a wealth of experience in foreign product agents, and many of the world's leading manufacturers such as Keens, Schneider, SMC, ABB, Siemens, and other world-renowned manufacturers to establish a long-term and stable relations of cooperation.
Atifts Technology Co., Ltd. @ 2024
Over the years, we have always adhered to the "pioneering, pragmatic, standardized, innovative" management philosophy, and constantly promote the close integration of products and market demand. We firmly believe that only by constantly exploring new market areas, doing a good job in every detail, standardizing business processes, and continuously innovating products and services can we ensure that our products are more adaptable to market changes and meet the diversified needs of our customers.
Since the founding of the company, we have always adhered to the core concept of "survival by quality", and are committed to providing customers with high-quality electronic components. At the same time, we take specialized R & D manufacturing as the goal, market-oriented development strategy to ensure that our products are always in the forefront of the industry.
With excellent product quality, professional technical service and good market reputation, Kunshan Autofits Technology Co.,Ltd. has won the trust and support of our customers. We look forward to working with more partners hand in hand, to achieve long-term win-win relationship, and jointly promote the prosperity of the electronic components industry.
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We are located next to Shanghai, the largest city in China, and Kunshan, the first economic county in China. With convenient transportation and developed logistics, it provides a good geographical advantage for our electronic components sales business.
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We are committed to providing many types and brands of electronic components, including but not limited to Sensors, Switches & Relays, Connectors, Circuit Protectio, Power Supplier & Cable, etc. We have established relationships with many well-known electronic component manufacturers. We have established long-term and stable relationships with many well-known electronic component manufacturers to ensure that the products we sell are of reliable quality and reasonable price.
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