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CHINT NXB-125 Miniature Circuit Breaker
Model: NXB-125
4-hour response · Pricing in SAR · Delivery across all KSA regions
NXB-125 — CHINT NXB-125 Miniature Circuit Breaker
The CHINT NXB-125 Miniature Circuit Breaker extends the NXB range into the 80 A to 125 A current bracket, bridging the gap between consumer-grade MCBs and full moulded-case circuit breakers in 1-pole, 2-pole, 3-pole, and 4-pole configurations. Certified to IEC 60898-2 and carrying SASO approval for use in Saudi Arabia, the NXB-125 offers a rated short-circuit breaking capacity of 10 kA at 230/400 V, making it suitable for main incomer protection in commercial sub-distribution panels and as a feed-point MCB for sub-boards in multi-storey buildings. Type C tripping characteristic is standard to handle the moderate inrush currents associated with transformer primaries, HVAC equipment, and small motor loads common in Saudi commercial projects.
The NXB-125 retains the standard 35 mm DIN-rail footprint of the NXB family but uses an enlarged terminal block accepting conductors up to 70 mm² (Cu) with standard ring-lug or bootlace ferrule terminations. This allows direct connection of 35–50 mm² cables from main distribution panels without cable reducers or adapter terminals, a practical advantage in commercial panel builds where main incomer cables arrive at substantial cross-sections. The double-break contact design used in the NXB-125 achieves the 10 kA breaking capacity without resorting to an oversized housing, keeping the device footprint competitive with European MCBs at the same rating.
Commercial and mixed-use developments across Saudi Arabia's urban centres represent the primary market for the NXB-125. High-rise towers in Riyadh's Central Business District, hospitality projects along Jeddah's Corniche, and integrated mixed-use complexes in NEOM's Sindalah and Aqaba zones specify incomer MCBs in the 80–125 A range for sub-board protection throughout the building. The NXB-125 meets these requirements at a cost that fits within the electrical budget of most international EPC contractors working under Saudi government framework contracts. SWCC and NWC municipal water authority sites also use 125 A MCBs for main feeder protection to pump house control panels, where the NXB-125 delivers reliable service at ambient temperatures up to 45°C without derating.
Razz Middle East stocks the full NXB-125 range in 3-pole and 4-pole Type C configurations as standard, with 1-pole and 2-pole variants available on 5-day lead time from our regional warehouse. Our team issues SAR-denominated quotations within 4 hours and can coordinate delivery to any location in Saudi Arabia, including NEOM site logistics camps, ARAMCO residential cities, and SABIC contractor construction sites in Jubail and Yanbu.
Technical Specifications
Full specifications for the NXB-125
- Standard
- IEC 60898-2 / SASO certified
- Current Rating
- 80–125 A
- Poles
- 1P / 2P / 3P / 4P
- Trip Characteristic
- Type C
- Short-Circuit Breaking Capacity
- 10 kA at 230/400 V AC
- Rated Voltage
- 230/400 V AC
- Max Conductor Cross-Section
- 70 mm² Cu
- Operating Temperature
- -25°C to +70°C
Key Features & Benefits
- SASO-certified and IEC 60898-2 compliant, suitable for use as a main incomer MCB in SEC-approved sub-distribution panels in commercial and mixed-use buildings across Saudi Arabia.
- 10 kA short-circuit breaking capacity at 400 V makes the NXB-125 suitable for incomer protection applications in commercial buildings without requiring a separate current-limiting fuse upstream.
- Large terminal block accepts conductor cross-sections up to 70 mm² Cu with standard ferrule terminations, eliminating the need for cable reducers or adapter terminals when connecting main supply cables.
- Double-break contact technology achieves high breaking capacity in a compact DIN-rail housing that fits standard distribution board busbars without oversized enclosures.
- Type C tripping characteristic (5–10 In) handles transformer inrush, HVAC compressor starting currents, and mixed commercial loads without nuisance tripping on power-on surges.
- Rated for -25°C to +70°C operating temperature, ensuring reliable performance in Saudi Arabia's outdoor panel enclosures during summer ambient temperatures exceeding 45°C.
Industrial Applications in Saudi Arabia
- Main incomer protection for sub-distribution boards in high-rise commercial towers in Riyadh's King Abdullah Financial District and Jeddah's Corniche development zones.
- Feed-point MCB for tenant sub-boards in mixed-use complexes and hospitality projects at NEOM's Sindalah Island and Aqaba zones, where 125 A incomer MCBs are specified under international EPC contracts.
- Primary circuit protection for HVAC plant rooms in large commercial developments across Dammam and Al Khobar, protecting transformer primaries and packaged chiller unit incomers.
- Pump house control panel incomer protection at SWCC and NWC water authority sites, where the 10 kA breaking capacity withstands fault levels on low-voltage switchgear busbars.
- Distribution panel incomers in government ministry buildings and public facilities undergoing electrical refurbishment under Vision 2030 social-infrastructure upgrade programmes.
- Sub-board protection in large retail and logistics warehouse developments in MODON industrial estates across Jubail, Yanbu, and Riyadh, where 125 A three-phase supply is standard.
Industrial Supplier in Saudi Arabia
Get a Quote for the CHINT NXB-125 Miniature Circuit Breaker
We respond within 4 business hours. Send model NXB-125 for competitive pricing in SAR with delivery across Saudi Arabia and the GCC.
Frequently Asked Questions — NXB-125
Common questions from buyers in Saudi Arabia and the GCC