Function and purpose
The molded case circuit breaker can protect the lines and equipment in the distribution line from overload and short circuit, and can also provide overload and short circuit protection for the infrequent starting of the motor. ● Frame grade NXMS series electronic circuit breakers: 160A, 250A, 400A, 630A, 1000A, 1250A, 1600A ● Rated operating voltage Ue(AC): 230V/240V, 400V/415V, 500V, 690V ● Breaking capacity code: S, H ● Number of poles: 3P, 4P ● Trip unit type: electronic ● Installation method: fixed, plug-in ● Certification: CCC, KEMA, CE, CB, EAC
Detailed description
Parameters:
Operating breaking capacity: Ics=36/50
Ultimate breaking capacity: Icu=50/70
Advantages/core functions:
01 Comprehensive functions
Can carry out overload long-delay, short-circuit short-delay, short-circuit instantaneous and other protections, and also has overload alarm non-trip function to meet various customer protection needs
02 Safe and reliable
Higher rated insulation voltage and rated impulse withstand voltage, safer for customers to use
03 Flexible and easy to use
Universal design of internal accessories reduces customer stocking types and helps customers save inventory
Detailed parameters
| Parameter classification | Parameter items | Parameter values |
|---|
| Rack-level rated current Inm(A) | 160 | 250 400 |
| Rated current In(A) | 32, 63, 100, 125, 160 | 200, 250 300, 315, 320, 400 |
| Rated insulation voltage Ui(V) | 800 | 800 1000 |
| Rated impulse withstand voltage Uimp(kV) | 8 | 8 12 |
| Rated operating voltage Ue(V), AC 50/60Hz | 230/240,400/415,500,690 | 230/240,400/415,500,690 230/240,400/415,500,690 |
| Breaking capacity code | H | R H R S H |
| Number of poles | 3P | |
| 4P | |
| Rated limit short-circuit breaking capacity Icu(kA) | AC230/240V | 75 75 75 75 100 |
| AC400/415V | 50 70 50 70 70 |
| AC500V | 30 40 30 40 - |
| AC690V | 10 10 10 10 15 |
| Rated operating short-circuit breaking capacity Ics(kA) | AC230/240V | 50 50 50 50 75 |
| AC400/415V | 36 50 36 50 36 |
| AC500V | 30 40 30 40 - |
| AC690V | 5 5 5 5 7.5 |
| Rated short-time withstand current Icw(kA),1s AC400V/415V/690V | - | - - - 6 |
| Comply with standards | | IEC/EN 60947-2, GB/T 14048.2 |
| Usage category | A | A B |
| Isolation function | | |
| Applicable working environment temperature | -25℃～+70℃ | |
| Flashover distance (mm) | ≤ 50 | ≤ 50 ≤ 100 |
| Mechanical life (times) | Maintenance-free | 20000 20000 10000 |
| Maintained | 40000 40000 20000 |
| Electrical life (times) | AC415V, In | 10000 10000 8000 |
| Electronic tripping (adjustable) | Distribution protection | ■ ■ n n n n ■ |
| Handheld test module | ■ ■ ■ ■ |
| Outline dimensions (mm) Width (W)/Height (H)/Depth (D) | Width (W)/Height (H) | 90/120 105/140 107/142 140/185 |
| High | 155 165 257 |
| Deep (S type/H type) | -/91 -/102 108.5/108.5 |
