WEG NRBE 40 A 2-Pole 30 mA RCCB Single-Phase Earth Leakage

The WEG NRBE 40 A 2-Pole 30 mA is a two-pole residual current circuit breaker for single-phase earth leakage protection at 30 mA life-safety sensitivity, covering single-phase circuits up to 40 A in Saudi residential, commercial, and light industrial electrical installations. Two-pole RCCBs protect the phase and neutral conductors of single-phase circuits, disconnecting both conductors simultaneously on detection of 30 mA earth leakage current — the life-safety threshold below which cardiac fibrillation risk is negligible per IEC 60479 (physiological effects of electrical current on humans).

Saudi Residential and Commercial Applications

The WEG NRBE 40 A 2-pole 30 mA is widely used in Saudi residential villas and apartments, commercial offices, retail units, and light industrial workshops for socket outlet circuit protection, bathroom and wet area circuits, exterior lighting circuits, and air conditioning unit circuits. Saudi Building Code electrical requirements (based on IEC 60364) mandate RCCB protection on all socket outlet circuits and wet area circuits, making the NRBE 40 A the standard device for final circuit earth leakage protection in Saudi residential and commercial projects. Saudi MEP contractors specify NRBE series for its competitive pricing, reliability, and local availability through Razz Middle East.

Technical Specification

Type AC sensitivity (sinusoidal 50 Hz residual current) is the standard type for Saudi 50 Hz power systems. The device trips within 40 ms at 1× IΔn (30 mA) and within 150 ms at 5× IΔn (150 mA), complying with IEC 61008-1 time-current operating limits. The compact 2-module DIN-rail body fits standard residential and commercial distribution boards. The 40 A current rating covers 8 mm² (45 A rated) cables and is the standard size for air conditioning and general power final circuits in Saudi buildings.