WEG MPW-40-3-D032 Motor Protection Circuit Breaker

The WEG MPW-40-3-D032 is a three-pole motor protection circuit breaker in the MPW-40 frame, rated for 2.5 A to 3.2 A, providing integrated thermal-magnetic trip protection for three-phase motors from 1.1 kW to 1.5 kW at 400 V AC. The MPW-40 frame step up from the MPW-25 series offers an increased breaking capacity and wider current range, making it the preferred choice for medium-small motors in Saudi industrial MCCs where short-circuit levels at the distribution panel are higher than at end-of-line positions.

IEC Compliance and Saudi Standards

The MPW-40-3-D032 is IEC 60947-4-1 type tested and certified, meeting the requirements cited in Saudi Aramco SAES-P-100 (electrical systems) and SAES-E-005 (electrical area classification) for motor protection devices. SABIC procurement standards for motor starters also reference IEC 60947-4-1 type testing as mandatory. Razz Middle East supplies WEG MPW-40 devices with full IEC type test documentation, certificate of conformity, and technical data sheets aligned to Saudi engineering document management requirements.

Motor Control Centre Applications

The 1.1–1.5 kW motor range covered by the MPW-40-3-D032 corresponds to HVAC supply fan motors, chilled water pump auxiliaries, small agitator drives, and instrument panel cooling units common across Saudi commercial and industrial buildings. In petrochemical facilities operated by Saudi Aramco and SABIC, this motor size appears in instrument air drying units, chemical injection skids, and utility water distribution systems. The MPW-40-3-D032, combined with a CWM16 or CWM25 contactor and a WEG motor protection relay, forms a complete, coordinated motor starter that satisfies Saudi project specifications and inspection requirements.

Operational Features for Saudi Industrial Conditions

The device's adjustable current dial enables fine-tuning to motor nameplate FLC, which is critical in Saudi Arabia where high ambient temperatures (regularly exceeding 45°C in Eastern Province summers) require derating of motor and protection device current-carrying capacity per IEC 60947-4-1 correction factors. The padlockable operating handle supports LOTO procedures per Saudi Aramco GI 2.100, and the IP20 body protection suits installation in sealed MCC cubicles. Front-accessible terminals facilitate maintenance activities without removing the entire starter assembly from the DIN rail.

Razz Middle East Supply

As an authorised WEG distributor, Razz Middle East maintains MPW-40-3-D032 stock in Saudi Arabia for project delivery across all industrial regions. Our engineering team provides bill-of-materials support, MCC layout design assistance, and coordination study documentation for motor protection device selection on large Saudi projects including SEC, Aramco, SABIC, and NEOM M&E packages.