WEG MPW-25-3-D012 Motor Protection Circuit Breaker

The WEG MPW-25-3-D012 motor protection circuit breaker provides thermal-magnetic protection for three-phase motors in the 1.0 A to 1.2 A range, corresponding to motor sizes of approximately 0.25 kW to 0.37 kW at 400 V AC. Designed for installation in motor control centres and compact starter panels serving Saudi industrial plants, the MPW-25-3-D012 replaces separate overload relays with an integrated, single-device solution that simplifies MCC design, reduces wiring, and lowers total installed cost for EPC contractors and panel builders working to Saudi Aramco and SABIC specifications.

Saudi Industrial Context

Saudi Arabia's rapid industrial expansion — encompassing NEOM, Qiddiya, Red Sea Project, Vision 2030 industrial cities, and ongoing expansions at Aramco's Ras Tanura, Abqaiq, and Berri facilities — drives continuous demand for reliable, IEC-certified motor protection equipment. The MPW-25-3-D012 is specified in motor starter BOM submissions to Saudi Aramco and SABIC for motors driving utilities, services, and process auxiliary equipment. Razz Middle East maintains stock in Saudi Arabia for fast project delivery across all regions of the Kingdom including the Eastern Province, Riyadh, Makkah, and Madinah regions.

Electrical Performance

With a breaking capacity of 50 kA at 400 V AC, the MPW-25-3-D012 safely interrupts prospective short-circuit currents typical of industrial LV switchboard feed points. The 690 V AC rated voltage provides margin for high-voltage industrial systems. The three-pole configuration ensures simultaneous disconnection of all phases on trip, preventing single-phasing damage to motor windings — a common failure mode in Saudi industrial environments where supply quality can be variable at remote plant locations.

DOL Starter Assembly

Paired with a WEG CWM09 or CWM12 contactor and control wiring, the MPW-25-3-D012 forms a complete IEC 60947-4-1 direct-on-line starter. These starter assemblies are DIN-rail mounted and supplied in standardised MCC cubicles with WEG busbars, cable management, and door-mounted operator interfaces. Pre-wired and factory-tested starter assemblies from Razz Middle East significantly reduce site installation time on large Saudi industrial projects where hundreds of motor starters may be installed.