Schneider Electric NSX250 TMD 125A Circuit Breaker High Quality NSX250 TMD 125A LV431676 Electrical Breaker
-
I. Core Basic Parameters
Table Parameter Item Specific Specifications
Brand: Schneider Electric
Product Series: ComPacT NSX250 Series
Model: NSX250 TMD 125A
Product Type: Molded Case Circuit Breaker (MCCB)
Frame Current: 250A
Rated Current (In): 125A (Thermal-Magnetic Trip Unit Rated Current, Adjustable Range 70-125A)
Trip Unit Type: TMD (Thermal-Magnetic Trip Unit)
Protection Functions: Long-delay overload protection (L, adjustable), short-circuit instantaneous protection (I, fixed)
Number of Poles: 3P / 4P (3D/4D wiring configuration)
Rated Operating Voltage (Ue): 690V AC (50/60Hz)
Rated Insulation Voltage (Ui): 800V AC
Rated Impulse Withstand Voltage (Uimp): 8kV
Breaking Capacity (Icu @ 415V) Type B: 25kA; Type F: 36kA; Type N: 50kA; Type H: 70kA
Installation Methods: Fixed, Insert, Retractable
Mechanical Life: 15,000 cycles
Electrical Life: 8,000 cycles (440V operating conditions)
Protection Rating: IP20 (Front)
Weight (3P): Approx. 4.8 kg
Dimensions (3P, Length × Height × Depth): Approx. 105 × 161 × 86 mm
Standards: IEC 60947-2, GB 14048.2
Main Certifications: CCC, cULus, CSA, EAC, RoHS
| Parameter | Value |
|---|---|
| Rated Operating Voltage (Ue) | 690V AC, 50/60Hz |
| Rated Insulation Voltage (Ui) | 800V AC |
| Rated Impulse Withstand Voltage (Uimp) | 8kV |
| Breakthrough Capacity (Icu @ 415V) | N type: 50kA; F type: 36kA; H type: 70kA |
| Mechanical Life | 15,000 cycles |
| Electrical Life | 8,000 cycles (440V) |
| Protection Rating | IP20 (front) |
| Weight (3P) | Approx. 8.1kg |
| Dimensions (3P) | Approx. 140*255*110mm (W*H*D) |
- Long-time Delay Protection (L): Overload protection with current adjustable from 0.4 to 1 * In, inverse time characteristic
- Short-time Delay Protection (S): Short-circuit short-time delay with current adjustable from 1.5 to 10 * In, delay 0.1 to 0.4 s
- Instantaneous Protection (I): Short-circuit instantaneous at 14 * In fixed (approximately 8820A)
- Display: LED status indicator (operating/faulting)
- Function: Isolation function compliant with IEC 60947-2 standard
- Main circuit and branch circuit protection in industrial power distribution systems
- Factory, data center, and building distribution panels
- Motor, transformer, and capacitor bank protection
- Replaces traditional air switches with precise electronic protection
Standards: IEC 60947-2, GB 14048.2
Certifications: CCC, cULus, CSA, EAC, classification society certifications
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.