WEG NRBE 40 A 4-Pole 30 mA RCCB Three-Phase Final Circuit

The WEG NRBE 40 A 4-Pole 30 mA is a compact four-pole residual current circuit breaker for three-phase final circuits up to 40 A requiring life-safety earth leakage protection at the 30 mA sensitivity level. The 40 A 4-pole size is specified for three-phase socket outlets (IEC 60309 type), small three-phase equipment circuits in workshops and laboratories, three-phase welding outlet circuits in Saudi industrial maintenance workshops, and three-phase outdoor power supply circuits in construction and infrastructure sites throughout the Kingdom.

Workshop and Industrial Socket Protection

Saudi industrial maintenance workshops at Aramco, SABIC, and SEC facilities use three-phase 16 A and 32 A IEC 60309 socket outlets for portable tools, welding machines, and test equipment. The NRBE 40 A 4-pole 30 mA RCCB protects these circuits, ensuring personnel safety when using portable three-phase equipment where the risk of earth fault from damaged cable or tool housing is significant. Saudi Aramco's GI 2.100 requires RCCB protection on all socket outlet circuits and portable equipment supply points, making the NRBE 40 A the standard protection device for these applications.

Construction Site Temporary Power

Vision 2030 mega-project construction sites across Saudi Arabia — NEOM, Red Sea Project, Diriyah Gate, Qiddiya, and multiple Saudi industrial city expansions — use large numbers of temporary distribution boards feeding three-phase power to construction equipment. These temporary installations are required to have 30 mA RCCB protection on all circuits per IEC 60364-7-704 (temporary construction site installations), which is adopted in Saudi temporary installation standards. Razz Middle East supplies NRBE 40 A 4-pole in quantity to temporary power distribution suppliers and electrical subcontractors on these large Saudi construction projects.