WEG
WEG DWE-4 Motor Protection Relay Class 30 Extended Starting
Model: DWE-4-S4-CLS30
4-hour response · Pricing in SAR · Delivery across all KSA regions
WEG DWE-4 Motor Protection Relay Class 30 Extended Starting
The WEG DWE-4-S4-CLS30 is the Class 30 extended-starting-time variant of the advanced DWE-4 electronic motor protection relay, providing the longest permissible starting time under IEC 60947-4-1 for motors driving the heaviest inertia loads found in Saudi industrial facilities. Class 30 tolerates 7.2× FLC starting current for up to 30 seconds, accommodating motors driving loaded conveyor belts at full belt load, large ball mill drums at Saudi cement plants, ID/FD fan systems with large impellers, and large centrifugal pump systems starting against open discharge valves.
Class 30 Application Engineering
Selecting Class 30 requires confirmation that the motor's thermal withstand at starting is consistent with the extended starting time — motors intended for Class 30 applications are designed with higher thermal mass and improved ventilation to withstand the thermal energy injected during extended DOL starting. WEG's engineering catalogue provides motor-relay coordination curves for DWE-4 Class 30 with WEG W22 and WEG HGF motors, confirming thermal compatibility. Razz Middle East provides this coordination data to Saudi project engineers specifying drive train protection for heavy-start applications.
All DWE-4 Advanced Features
The DWE-4-S4-CLS30 retains all DWE-4 advanced features: voltage-based protection, power measurement, PROFIBUS DP and Modbus RTU communication, 8-event fault log, starting profile recording, and harmonic monitoring. These advanced diagnostic functions are especially valuable for Class 30 heavy-start motors where starting profile recording helps identify abnormal starts (failed starting attempts, partial load starts, voltage dip during start) and supports root-cause analysis of motor failures in Saudi industrial plants. Razz Middle East supports Saudi operators in configuring DWE-4 data recording for predictive maintenance programmes.
Technical Specifications
Full specifications for the DWE-4-S4-CLS30
- Motor Range
- 30 kW to 1000+ kW
- Trip Class
- Class 30 (IEC 60947-4-1)
- Starting Tolerance
- 7.2× FLC for 30 seconds
- Communication
- Modbus RTU + PROFIBUS DP
- Voltage Protection
- over/under voltage included
- Starting Profile Recording
- yes
- Event Log
- 8 events with timestamps
- Standard
- IEC 60947-4-1, IEC 60255
Key Features & Benefits
- Class 30 extended starting 30-second tolerance
- All DWE-4 advanced protection functions
- PROFIBUS DP and Modbus RTU communication
- Starting profile recording for diagnostics
- 8-event fault log with timestamps
- Suitable for loaded conveyor and mill starts
Industrial Applications in Saudi Arabia
- Cement ball mill drive motor starters
- Loaded belt conveyor motor protection
- Large ID/FD fan drive starters
- Centrifugal pump full-load DOL starters
- WEG W22 heavy-inertia motor protection
- Saudi cement plant heavy motor MCCs
Industrial Supplier in Saudi Arabia
Get a Quote for the WEG DWE-4 Motor Protection Relay Class 30 Extended Starting
We respond within 4 business hours. Send model DWE-4-S4-CLS30 for competitive pricing in SAR with delivery across Saudi Arabia and the GCC.
Frequently Asked Questions — DWE-4-S4-CLS30
Common questions from buyers in Saudi Arabia and the GCC
What is the WEG DWE-4 Motor Protection Relay Class 30 Extended Starting (DWE-4-S4-CLS30) and what is it used for?
The WEG DWE-4-S4-CLS30 is the Class 30 extended-starting-time variant of the advanced DWE-4 electronic motor protection relay, providing the longest permissible starting time under IEC 60947-4-1 for motors driving the heaviest inertia loads found in Saudi industrial facilities. Class 30 tolerates 7.2× FLC starting current for up to 30 seconds, accommodating motors driving loaded conveyor belts at full belt load, large ball mill drums at Saudi cement plants, ID/FD fan systems with large impellers, and large centrifugal pump systems starting against open discharge valves.
Where can I buy the WEG DWE-4-S4-CLS30 in Saudi Arabia?
Razz Middle East supplies genuine WEG products including the WEG DWE-4 Motor Protection Relay Class 30 Extended Starting (DWE-4-S4-CLS30) 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-4-S4-CLS30 in KSA?
Click "Request Free Quote" on this page or message us the model number DWE-4-S4-CLS30 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-4 Motor Protection Relay Class 30 Extended Starting 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-4-S4-CLS30 for a precise availability confirmation and delivery date.
Can the DWE-4-S4-CLS30 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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