WEG MPW-25-3-D025 Motor Protection Circuit Breaker

The WEG MPW-25-3-D025 motor protection circuit breaker covers the 2.0 A to 2.5 A range within the MPW-25 frame, providing integrated thermal-magnetic trip protection for three-phase induction motors from 0.75 kW to 1.1 kW at 400 V AC. This is the top-of-range device within the MPW-25 frame series and represents one of the most versatile motor protection devices for small-motor MCCs in Saudi industrial plants operated by Aramco, SABIC, SWCC, and private sector industrial companies across the Kingdom.

Technical Protection Characteristics

The MPW-25-3-D025 uses a differential thermal bimetallic element that provides phase-loss sensitivity, detecting single-phase operation conditions where one phase carries zero current while the remaining two carry 1.73× rated current. This condition rapidly overheats motor windings and is a major cause of motor burnout in Saudi industrial environments. Instantaneous magnetic release provides short-circuit protection at the panel feed level. The 2.5 A maximum setting covers 1.1 kW motors at rated voltage with appropriate margin for starting current and service factor.

Complete DOL Starter Assembly

The most common Saudi MCC application combines MPW-25-3-D025 + CWM16 contactor + control transformer + pushbuttons to create a complete DOL motor starter. Razz Middle East supplies these assemblies pre-wired and tested to WEG application guidelines and IEC 60947-4-1 type coordination tables. Saudi Aramco-approved MCC builders specify WEG starter components as standard in their type-approved panel designs, and Razz maintains preferred supplier status with several leading Saudi MCC manufacturers.

Widespread Saudi Industrial Deployment

The 0.75–1.1 kW motor range is ubiquitous across Saudi industrial facilities: cooling water pump auxiliaries, condensate return pump starters, compressed air dryer fan motors, sump and drain pump starters, fire and gas detection panel auxiliaries, and lighting control panel motor operators. Vision 2030 mega-projects including NEOM infrastructure, Red Sea Project utilities, and Qiddiya entertainment district services all utilise large quantities of small motor starters in their M&E packages, creating sustained demand for MPW-25-3-D025 devices that Razz Middle East is positioned to fulfil from local Saudi inventory.