WEG
WEG DWE-3 Electronic Motor Protection Relay with RS-485 Modbus
Model: DWE-3-S3-MT-RS
4-hour response · Pricing in SAR · Delivery across all KSA regions
WEG DWE-3 Electronic Motor Protection Relay with RS-485 Modbus
The WEG DWE-3-S3-MT-RS is the RS-485 Modbus RTU communication variant of the DWE-3 electronic motor protection relay, optimised for integration with Saudi industrial plant DCS, PLC, and SCADA systems via standard RS-485 serial communication. In Saudi petrochemical, oil and gas, and utilities facilities, the Modbus RTU protocol over RS-485 is the most widely used communication standard for field device integration, supported by all major DCS platforms (Honeywell, Emerson, ABB, Yokogawa) present in Saudi Aramco and SABIC facilities.
Modbus RTU Integration
The DWE-3-S3-MT-RS communicates at configurable baud rates from 2400 to 115200 bps on RS-485 two-wire or four-wire networks. Up to 247 relay addresses can be networked on a single RS-485 segment, enabling cost-effective integration of multiple motor starters into a single MCC communication network. The Modbus register map provides access to: three-phase current values (instantaneous and average), thermal state percentage, time to trip, time to reset, fault code (last fault type), and protection set points (read/write). Saudi Aramco DCS standards require Modbus RTU for field device integration in production support facilities, making the DWE-3-S3-MT-RS the standard choice for non-critical medium motor protection with DCS connectivity.
Protection Functions
All standard DWE-3 protection functions are included: Class 10 overload, phase unbalance, phase loss, thermistor input (PTC), locked rotor detection, excessive starting time, and restart inhibit (thermal memory). The 11 kW to 630 kW motor coverage range makes this relay suitable for the broad range of medium and large motors found throughout Saudi industrial MCCs including cooling water pumps, process compressor auxiliaries, plant air systems, and materials handling drives.
Saudi Deployment and Razz Support
Razz Middle East stocks DWE-3-S3-MT-RS relays for immediate delivery and provides configuration services including Modbus address mapping, baud rate setting, and DCS tag documentation per Saudi project standards. Our team supports factory acceptance testing (FAT) of MCC panels incorporating DWE-3 relays, including Modbus communication testing to the project DCS simulator.
Technical Specifications
Full specifications for the DWE-3-S3-MT-RS
- Motor Range
- 11 kW to 630+ kW
- Communication
- Modbus RTU RS-485 (2-wire or 4-wire)
- Baud Rates
- 2400 to 115200 bps configurable
- Max Addresses
- 247 per RS-485 segment
- Protection
- Class 10, phase unbalance, phase loss, PTC
- Thermal Memory
- yes
- Standard
- IEC 60947-4-1, IEC 60255
- Supply Voltage
- 24 V DC or 110–240 V AC
Key Features & Benefits
- Modbus RTU RS-485 two-wire or four-wire
- Up to 247 relays on single RS-485 network
- Class 10 overload with thermal memory
- Phase unbalance and phase loss detection
- PTC thermistor motor winding input
- IEC 60947-4-1 certified
Industrial Applications in Saudi Arabia
- Medium motor DCS-integrated MCC starters
- Cooling water pump motor protection
- Process compressor auxiliary motor starters
- Plant air system motor protection
- Saudi Aramco and SABIC DCS motor integration
- FAT-tested MCC panel motor protection
Industrial Supplier in Saudi Arabia
Get a Quote for the WEG DWE-3 Electronic Motor Protection Relay with RS-485 Modbus
We respond within 4 business hours. Send model DWE-3-S3-MT-RS for competitive pricing in SAR with delivery across Saudi Arabia and the GCC.
Frequently Asked Questions — DWE-3-S3-MT-RS
Common questions from buyers in Saudi Arabia and the GCC
What is the WEG DWE-3 Electronic Motor Protection Relay with RS-485 Modbus (DWE-3-S3-MT-RS) and what is it used for?
The WEG DWE-3-S3-MT-RS is the RS-485 Modbus RTU communication variant of the DWE-3 electronic motor protection relay, optimised for integration with Saudi industrial plant DCS, PLC, and SCADA systems via standard RS-485 serial communication. In Saudi petrochemical, oil and gas, and utilities facilities, the Modbus RTU protocol over RS-485 is the most widely used communication standard for field device integration, supported by all major DCS platforms (Honeywell, Emerson, ABB, Yokogawa) present in Saudi Aramco and SABIC facilities.
Where can I buy the WEG DWE-3-S3-MT-RS in Saudi Arabia?
Razz Middle East supplies genuine WEG products including the WEG DWE-3 Electronic Motor Protection Relay with RS-485 Modbus (DWE-3-S3-MT-RS) across all regions of Saudi Arabia — Riyadh, Jeddah, Dammam, Al Khobar, Jubail, Yanbu, Mecca, and Medina. We maintain local stock on fast-moving items and can source specialist configurations. Request a quote on this page for same-day pricing.
How do I get the best price for the DWE-3-S3-MT-RS in KSA?
Click "Request Free Quote" on this page or message us the model number DWE-3-S3-MT-RS on WhatsApp. Our technical sales team responds within 4 business hours with a competitive price in SAR, confirmed stock availability, and delivery lead time — with no hidden charges or handling fees.
Is Razz Middle East an authorized WEG supplier in Saudi Arabia?
Razz Middle East is a specialist industrial equipment supplier in Saudi Arabia focused on WEG and other leading global brands. We supply 100% genuine OEM products backed by full manufacturer warranty, serving the oil & gas, petrochemical, power generation, water, construction, and manufacturing sectors across the Kingdom.
What is the delivery lead time for the WEG DWE-3 Electronic Motor Protection Relay with RS-485 Modbus in Saudi Arabia?
In-stock items typically ship within 24-48 hours to Riyadh, Dammam, Jeddah, and the Eastern Province. Project orders and non-standard configurations generally take 2-6 weeks. Contact us with the exact model number DWE-3-S3-MT-RS for a precise availability confirmation and delivery date.
Can the DWE-3-S3-MT-RS be supplied for ARAMCO, SABIC, or NEOM projects in KSA?
Yes. Razz Middle East has experience supplying WEG equipment to major industrial projects and EPC contractors across Saudi Arabia. We can provide full technical documentation, Material Inspection Reports (MIR), and certificates of conformity to meet vendor approval requirements. Contact our project team to discuss your specific project requirements.
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