WEG MPW-65-3-D050 Motor Protection Circuit Breaker

The WEG MPW-65-3-D050 is a three-pole motor protection circuit breaker in the MPW-65 frame, rated for 4.0 A to 5.0 A, providing integrated thermal-magnetic protection for three-phase motors from 2.2 kW to 3.0 kW at 400 V AC. Stepping up to the MPW-65 frame delivers higher breaking capacity and more robust construction suited to the higher fault levels present at main distribution switchboard feed points in large Saudi industrial plants, where prospective short-circuit currents can exceed 50 kA at the MCC busbars.

IEC 60947-4-1 Compliance and Application

The MPW-65-3-D050 complies with IEC 60947-4-1 and IEC 60947-2, and carries CE marking confirming European and international market access. In Saudi Arabia, IEC compliance satisfies the requirements of Saudi Standards (SASO) for electrical protective devices and aligns with Saudi Aramco Engineering Standard SAES-P-100 section on motor branch circuit protection. The thermal-magnetic trip characteristic provides proven protection for standard IEC efficiency class IE2 and IE3 motors, which are the predominant motor types specified in Saudi Aramco and SABIC procurement.

Medium Motor Application Context

The 2.2–3.0 kW motor range is widely deployed in Saudi industrial facilities for applications including centrifugal pump starters for cooling water and service water systems, exhaust fan drives in process buildings and electrical rooms, fire pump jockey motor assemblies (per NFPA 20 / SAES-B-058), conveyor belt head drive motors in materials handling, and small rotary equipment including screw compressor auxiliaries. The MPW-65-3-D050, paired with WEG CWM25 or CWM32 contactor and DOL control circuit, forms a complete cost-effective starter meeting Saudi project standards.

DOL Starter with MPW-65

In DOL configuration, the MPW-65-3-D050 serves as both the manual isolation device (replaces a separate motor isolating switch) and the protection device, reducing the BOM count and panel footprint. Saudi Aramco MCC standards permit using a MPCB as the isolating device when it meets IEC 60947-2 isolation category requirements, which the MPW-65-3-D050 satisfies. Razz Middle East provides DOL starter assemblies using MPW-65-3-D050 + CWM contactor pre-wired on DIN-rail sub-plates for quick installation in MCC cubicles.

Razz Middle East Saudi Supply

Razz Middle East stocks WEG MPW-65-3-D050 in Saudi Arabia for immediate delivery to Aramco, SABIC, and construction projects across the Kingdom. We provide complete technical documentation, starter assembly design services, and post-delivery support including commissioning and troubleshooting for WEG motor protection products throughout Saudi Arabia.