CHINT NXB-125G Miniature Circuit Breaker,
provides advanced overload, short-circuit, and isolation protection for AC circuits up to 400 V and 125 A.
furthermore With a high breaking capacity of 10 kA, multiple tripping curves (B, C, D, and OV),
and a durable mechanical life of 20,000 operations,
in addition it ensures stable and safe circuit control. Built to IEC/EN 60898-1 standards,
moreover the NXB-125G delivers dependable performance in residential,
finally commercial, and industrial power distribution environments.
- first Standards Compliance: IEC/EN 60898-1
- second Certifications: CE, RoHS, REACH, Carbon Footprint compliant
- next Function: Overload protection, short-circuit protection, positive isolation
- then Rated Current (In): 63 A, 80 A, 100 A (1P, 2P, 3P, 4P), 125 A (1P, 2P)
- afterward Rated Voltage (Ue):
- 230 V~ for 1P
- 400 V~ for 2P, 3P, 4P
- subsequently Rated Frequency: 50/60 Hz
- similarly Number of Poles: 1P, 2P, 3P, 4P
- likewise Rated Short-circuit Breaking Capacity (Icn): 10 kA
- Rated Short-circuit Service Capacity (Ics): 7.5 kA
- Rated Impulse Withstand Voltage (Uimp): 4 kV (1.2/50 μs)
- Thermal-Magnetic Release Type:
- B Curve: 3–5 In (resistive loads)
- C Curve: 5–10 In (inductive loads)
- D Curve: 10–14 In (high inrush loads)
- OV Curve: 14–20 In (available only for 3P 80 A)
- soon Mechanical Life: 20,000 cycles
- after Electrical Life:
- 6,000 cycles (In ≤ 100 A)
- 4,000 cycles (In > 100 A)
- before Power Consumption per Pole:
- 63 A – 5 W
- 80 A – 7 W
- 100 A – 10 W
- 125 A – 14 W
- for instance Temperature Derating (Reference: 30 °C):
- 1.43× at –35 °C
- 1.20× at 0 °C
- 1.00× at 30 °C
- 0.81× at 60 °C
- 0.74× at 70 °C
- in conclusion Operating Temperature: –35 °C to +70 °C
- for example Storage Temperature: –35 °C to +85 °C
- specifically Applicable Altitude: ≤ 2000 m
- to illustrate Mounting Method: TH35-7.5 DIN rail mounting
- Cable Entry: Top or bottom entry
- Terminal Capacity:
- Min: 16 mm²
- Max: 50 mm²
- in a word Tightening Torque: 3.5 N·m (max 4 N·m)
- moreover Pollution Degree: 2
- also Protection Degree:
- IP20 (direct mounting)
- IP40 (in distribution box)
- but Compatible Accessories: AX-X3, AL-X3, SHT-X3, OVT-X3, UVT-X3, OUVT-X3
- finally Dimensions (L × H, mm):
- 1P – 27.0 × 75.5
- 2P – 54.0 × 78.5
- 3P – 81.0 × 78.5
- 4P – 108.0 × 78.5
