Legrand DPX3 160 Moulded Case Circuit Breaker

The Legrand DPX3 160 Moulded Case Circuit Breaker (MCCB) is a robust low-voltage protection and switching device rated from 16 A to 160 A, with thermal-magnetic trip units offering breaking capacities of 25 kA and 36 kA at 415 V AC in accordance with IEC 60947-2. Designed for the sub-distribution tier of industrial and commercial power systems, the DPX3 160 provides reliable overload protection, short-circuit protection, and on-load switching in a compact 3-pole or 4-pole moulded case that fits standard 100 mm DIN rail or direct panel mounting. The fixed thermal-magnetic trip unit provides stable protection characteristics without field calibration, while the adjustable Ir and Im settings on higher variants allow precise setting to the rated current of the downstream cable or equipment — an important feature when connecting to diverse load profiles in KSA industrial facilities.

The DPX3 160 is constructed to withstand the demanding operating conditions of Saudi Arabia's industrial environment. The glass-fibre reinforced polyester housing maintains mechanical integrity at ambient temperatures up to +70°C, and the silver-based alloy contact system minimises contact resistance and arcing under the frequent make-break cycles typical in food processing, pharmaceutical, and logistics facilities across the Kingdom. The breaker's service life of 25,000 mechanical operations and 10,000 electrical operations exceeds IEC Category B requirements and ensures decades of reliable service in SEC-connected distribution boards. The integrated rotary handle allows direct manual operation through the door of a lockable enclosure, a requirement in many SEC and MOMRA approved switchroom designs across Saudi Arabia.

In the Kingdom's construction and infrastructure landscape, the DPX3 160 is the specified MCCB for incoming protection in tenant distribution boards of commercial towers, hospital power systems under the Saudi Ministry of Health capital programme, and airport terminal sub-distribution panels for the General Authority of Civil Aviation (GACA) expansion projects at King Khalid, King Abdulaziz, and King Fahd International Airports. SABIC's utility distribution networks in Jubail and Yanbu rely on the DPX3 160 for feeder protection of transformer secondary switchboards, where its 36 kA breaking capacity comfortably covers the fault levels generated by modern 1000 kVA and 1600 kVA distribution transformers. The NEOM logistics and industrial zone sub-distribution network uses DPX3 160 MCCBs at the sub-feeder level to achieve granular protection co-ordination with upstream DPX3 630 devices.

Razz Middle East supplies the complete DPX3 160 family — fixed and adjustable versions, 3-pole and 4-pole, with a full range of accessories including rotary handles, motor-operated mechanisms, shunt trips, and under-voltage releases — from local stock in Riyadh and Al Khobar. Our technical team supports protection co-ordination studies, type-test documentation retrieval from Legrand's global test laboratory network, and site commissioning across all regions of the Kingdom. All breakers are supplied with original IEC 60947-2 type-test certificates and SASO compliance documentation as standard.