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CHINT NXM-250 Moulded Case Circuit Breaker
Model: NXM-250
4-hour response · Pricing in SAR · Delivery across all KSA regions
NXM-250 — CHINT NXM-250 Moulded Case Circuit Breaker
The CHINT NXM-250 Moulded Case Circuit Breaker is a 250 A frame MCCB designed and tested to IEC 60947-2, carrying SASO certification for industrial and infrastructure applications in the Kingdom of Saudi Arabia. With an adjustable current rating spanning 100 A to 250 A via a calibrated rotary selector on the trip unit, the NXM-250 serves as both a sub-distribution panel incomer and a large motor feeder protection device. The rated ultimate breaking capacity (Icu) reaches 50 kA at 415 V AC in the H-frame variant, far exceeding the 25–36 kA breaking duty encountered on most secondary busbars fed from 1000–2500 kVA transformers typical in Saudi industrial estates. An adjustable electronic trip unit option is available for applications requiring precise Ir (overload), Isd (short-delay), and Ii (instantaneous) settings — particularly valuable when coordinating protection with upstream incomer breakers in multi-level switchgear.
Mechanically, the NXM-250 is built for reliability in harsh environments. The glass-fibre-reinforced polyester housing is rated IP40 in open mounting (IP54 with optional cover), the arc chutes use a magnetic arc-blowout design optimised for rapid arc extinction and minimal carbon deposition on the contacts, and the main current-carrying parts are silver-plated copper for low contact resistance and long service life under high-cycle operations. A full range of accessories matches market expectations: 3P and 4P pole configurations, motor operators for remote-open/remote-close from SCADA or DCS, undervoltage release (UVR) coils, shunt trip coils, auxiliary and alarm contacts, and wire-in or busbar-connection terminals to suit both fixed and draw-out panel arrangements.
Saudi Arabia's oil, gas, and petrochemical sector — centred on ARAMCO's Eastern Province operations, SABIC's Jubail Industrial City plants, and the downstream facilities in Yanbu — represents the largest demand segment for 100–250 A MCCBs. In these environments the NXM-250 is used for motor feeders driving cooling water pumps, process pumps, and compressor auxiliaries where the combination of high breaking capacity and adjustable electronic trip settings reduces nuisance tripping while maintaining selectivity with upstream feeder breakers. Infrastructure projects of the Vision 2030 programme — including the Riyadh Metro's power distribution network, NEOM's 380/13.8 kV substation LV switchgear, and the Diriyah Gate cultural quarter's utilities — also specify MCCBs in this range, with the NXM-250 consistently winning on price-performance among competing bids from Chinese and European brands.
Razz Middle East supplies the NXM-250 with full SASO conformity documentation and IEC test certificates. We hold 3-pole and 4-pole H-frame variants in local stock at our Riyadh and Dammam facilities, and our application engineers assist contractors and panel builders in the Eastern Province, Jubail, Jeddah, Yanbu, Mecca, and Medina with trip coordination studies and accessory selection. Delivery can be arranged to ARAMCO site logistics offices, SABIC contractor lay-down areas, and NEOM site logistics camps within standard lead times.
Technical Specifications
Full specifications for the NXM-250
- Standard
- IEC 60947-2 / SASO certified
- Frame Current
- 250 A
- Adjustable Current Range
- 100–250 A
- Poles
- 3P / 4P
- Ultimate Breaking Capacity (Icu)
- 50 kA at 415 V AC (H-frame)
- Service Breaking Capacity (Ics)
- 35 kA at 415 V AC
- Rated Voltage
- 415 V AC
- Trip Unit
- Thermal-magnetic or electronic (optional)
Key Features & Benefits
- SASO-certified with IEC 60947-2 type test reports available on request, enabling full regulatory compliance for Saudi government and ARAMCO/SABIC contractor procurement requirements.
- 50 kA ultimate breaking capacity (Icu) at 415 V in the H-frame variant far exceeds the fault levels on secondary busbars of 1000–2500 kVA transformers common in Saudi industrial estates.
- Optional electronic trip unit with adjustable Ir, Isd, and Ii settings provides precise coordination with upstream incomer breakers, reducing nuisance trips in multi-level LV switchgear systems.
- Motor operator accessory supports remote open/close from SCADA or DCS control systems, enabling integration into unmanned substations and remotely monitored industrial facilities.
- Silver-plated copper main contacts minimise contact resistance under high-cycle switching duties common in process plant motor feeders, extending contact life and reducing maintenance frequency.
- IP40 open / IP54 with cover enclosure rating keeps the device operational in Saudi Arabia's dusty desert environments without derating or accelerated contact wear.
Industrial Applications in Saudi Arabia
- Large motor feeder protection for cooling water pumps, process pumps, and compressor auxiliaries at ARAMCO's Eastern Province and SABIC's Jubail Industrial City facilities.
- Incomer protection for LV switchgear sections in NEOM's 380/13.8 kV substation networks and the Diriyah Gate cultural quarter utility infrastructure.
- Sub-distribution panel incomers in multi-storey towers and mixed-use developments across Riyadh, Jeddah, Dammam, and Mecca, where 100–250 A supply feeders terminate at main switch panels.
- Motor control centre (MCC) feeder breakers in desalination plant auxiliary systems at SWCC's Red Sea and Arabian Gulf facilities, where high-cycle switching demands silver-plated contacts.
- Cable feeder protection in SEC-contracted primary distribution substations and transformer LV terminals across the Kingdom's rapidly expanding grid under Vision 2030.
- Emergency generator automatic transfer switch panel protection at large hospitals and data centres in Riyadh and Jeddah, where 250 A MCCB reliability under fault conditions is safety-critical.
Industrial Supplier in Saudi Arabia
Get a Quote for the CHINT NXM-250 Moulded Case Circuit Breaker
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Frequently Asked Questions — NXM-250
Common questions from buyers in Saudi Arabia and the GCC