Legrand DX3 Miniature Circuit Breaker

The Legrand DX3 Miniature Circuit Breaker (MCB) is a high-performance protective device engineered to IEC 60898-1 and IEC 60947-2 standards, covering the full commercial and light-industrial current range from 1 A to 63 A. Available in B, C, and D tripping curves to match every load profile — from sensitive electronic circuits (B curve, 3–5× In) through standard motor and lighting loads (C curve, 5–10× In) to high-inertia transformers and welding equipment (D curve, 10–14× In) — the DX3 provides precisely tailored overcurrent and short-circuit protection without nuisance tripping. Rated breaking capacities of 6 kA and 10 kA cover the vast majority of low-voltage panel fault levels encountered in Saudi Arabian commercial buildings, industrial switchrooms, and utility substations, ensuring compliance with SASO and SEC distribution network requirements.

The DX3's compact 9 mm per pole pitch is the narrowest in its class, enabling panel builders across the Kingdom to fit substantially more protection into the same DIN-rail space — a critical advantage when retrofitting ageing switchboards in Vision 2030 infrastructure upgrades or fitting out the dense equipment rooms of NEOM's smart-city modules. The actuator mechanism is spring-loaded and thermally compensated to maintain consistent tripping performance across the wide ambient temperature range of −25°C to +60°C, which is essential in Saudi Arabia where outdoor distribution kiosks in Riyadh, Mecca, and the Eastern Province routinely experience summer air temperatures exceeding 50°C. The bi-directional connection design allows both top and bottom feeding, simplifying both new installations and the replacement of legacy breakers in existing panels.

In the Saudi energy and industrial landscape, the DX3 MCB is the specified protective device for low-voltage distribution boards across SEC-approved panel builders in Jeddah, Dammam, and Jubail. SABIC's support facilities and maintenance workshops in the Jubail Industrial City rely on DX3 protection for their auxiliary power distribution systems, while ARAMCO residential compounds and administrative buildings throughout the Eastern Province have standardised on the DX3 for its reliability, ease of reset, and UL-equivalent certification documentation that satisfies the Kingdom's SASO 2203 requirements. Commercial developments under the Public Investment Fund's Vision 2030 portfolio — including retail malls, hotels, and mixed-use towers in Diriyah, King Abdullah Economic City (KAEC), and Amaala — specify DX3 breakers in their electrical specifications due to Legrand's strong local technical support through Razz Middle East.

Razz Middle East maintains a comprehensive stock of DX3 MCBs across all standard ratings and curves in our Riyadh and Dammam warehouses, with typical lead times of 24–48 hours to site anywhere in the Kingdom. Our electrical engineering team provides full panel-builder support including fault-level calculation, selectivity co-ordination studies, and as-built documentation in both English and Arabic to meet SEC approval requirements. All DX3 breakers supplied by Razz Middle East are accompanied by original Legrand factory test certificates, conformity declarations, and SASO import documentation, ensuring a smooth approvals process for contractors working under MOMRA or SEC supervision.