CHINT · 110V DC miniature circuit breaker
Product overview
The CHINT NXB-125 single-pole DC circuit breaker provides thermal-magnetic overload and short-circuit protection for DC distribution circuits. This product page covers the C-characteristic, 110V DC version in 80A, 100A and 125A, with an ultimate breaking capacity of 10kA and a service breaking capacity of 7.5kA at the stated DC voltage.
Technical selection summary
| Series | NXB-125 |
|---|---|
| Product version | 1P, 110V DC, C characteristic |
| Rated current options | 80A / 100A / 125A |
| Rated ultimate short-circuit breaking capacity (Icu) | 10kA at DC 110V |
| Rated service short-circuit breaking capacity (Ics) | 7.5kA at DC 110V |
| Thermal-magnetic release | C characteristic; instantaneous release setting 8 × In |
| Rated impulse withstand voltage (Uimp) | 4kV |
| Applicable standard | IEC/EN 60947-2; Category A |
| Main functions | Overload protection, short-circuit protection and positive isolation |
| Mechanical life | 20,000 operating cycles |
| Electrical life | 6,000 cycles for 80A and 100A; 4,000 cycles for 125A |
| Mounting / width | DIN rail; 27mm width for 1P |
| Manufacturer ordering references | 80A: NXB-125 1P C80 DC110V — 330133 100A: NXB-125 1P C100 DC110V — 330140 125A: NXB-125 1P C125 DC110V — 330145 |
This listing is limited to 1P, C characteristic, DC 110V. The main and side photos show the 125A sample; 80A and 100A are supplied with their corresponding current markings. The downloadable catalogue also includes other AC/DC versions; its AC voltage ratings and other pole configurations are outside this listing. Select the breaker against the actual system voltage and prospective fault current, and follow the manufacturer’s terminal and wiring instructions.
Typical applications
- 110V DC distribution and protection panels
- DC auxiliary power and control-power circuits within the stated ratings
- Panel building and replacement procurement requiring an exact CHINT DC model
Specify your enquiry
For a focused quotation, include:
- Rated current: 80A, 100A or 125A
- NXB-125, 1P, C characteristic, DC 110V and the manufacturer reference code
- Quantity, destination country and required delivery date
- System voltage, prospective fault current and any project-specific documentation requirements
Download CHINT NXB-125 AC/DC catalogue (PDF)
Related products
Product reference images and drawings
Manufacturer series reference: use the 1P / 110V DC ratings for this listing. Other versions in the reference image require separate selection.
