접촉기,회로 차단기,태양광 인버터,전기 계량기,태양 전지
This is a CHINT NM1LE series 800A moulded case earth leakage 회로 차단기 with triple protection: 초과 적재, short-circuit and earth leakage. It has S-class breaking capacity (36kA@400V), 4-pole fixed installation, and adjustable rated residual operating current (30–500mA). It is widely used for personal electric shock protection and earth fault protection in industrial power distribution, high-power motor circuits and building electrical systems.
- Full Model Code Breakdown
| 부분 | Marking | 설명 | Technical Note |
| 1 | NM1LE | 제품 시리즈 | MCCB with earth leakage protection (LE = Leakage) based on CHINT NM1 series |
| 2 | 800 | 프레임 정격 전류 | Maximum frame current: 800에이 |
| 3 | 에스 | 차단 용량 등급 | S-class standard breaking capacity, 36kA@400V, for general distribution |
| 4 | 4300 | 극수 + trip type | 4 극 (3Ph+N), thermomagnetic trip (300 = no undervoltage release) |
| 5 | 800에이 | 정격전류 (~ 안에) | Continuous operating current: 800에이 |
- 주요 기술 매개변수
| 목 | 값 | 비고 |
| 제품 유형 | NM1LE series MCCB with earth leakage protection | Classic CHINT series with international advanced technology |
| 정격 절연 전압 (우이) | 800다섯 | Maximum continuous voltage for insulation parts |
| 정격 작동 전압 (우에) | 400뷔와 (50헤르츠) | Standard for three-phase four-wire systems |
| 정격 전류 내전압 (음) | 8kV | Withstand capability against transient high voltage |
| Ultimate breaking capacity (중환자실) | 36kA@400V | S-class, suitable for general industrial & commercial use |
| Service breaking capacity (IC) | 50% 중환자실 | Reusable after fault operation (GB 14048.2 compliant) |
| 정격전류 (~ 안에) | 800에이 | Maximum continuous current |
| Trip characteristic | 열자기 (inverse time overload + instantaneous short-circuit) | 초과 적재: 0.8–1.0In adjustable; Instantaneous: 5-10인치 |
| Earth leakage parameters | Rated residual operating current (IΔn): 30/100/200/300/500mA optional | Provides both personal shock protection and earth fault protection |
| Residual non-operating current (IΔn0): 0.5IΔn | ||
| Operating time: ≤0.3s (≤30mA), ≤0.1s (>30엄마) | ||
| 폴란드 | 4피 (3Ph+N) | N pole for leakage detection only (not for short-circuit breaking except special versions) |
| 장착 유형 | 결정된 | Standard rail or bolt mounting; withdrawable not supported |
| Connection type | 전면 연결 (기준) | Rear or plug-in connection optional |
| 보호 정도 | IP30 | IEC 60529, protects against finger and solid foreign objects |
| 주변 온도 | -5℃ ~ +40℃ | Derate required beyond this range |
| 치수 (mm) | H×W×D: 360×240×180 | Standard industrial size for panel installation |
| 무게 | 대략. 18kg | Includes leakage module; ~3kg heavier than standard NM1 |
- 일반적인 응용 분야
- Industrial power distribution systems
Main or sub-switch for three-phase four-wire 800A high-current circuits
Control circuits for large motors (예를 들어, 400kW induction motors) with full protection
Factories, 데이터 센터, mines requiring personal safety protection
- Building electrical systems
Main switchboards and emergency power circuits in commercial and high-rise buildings
Public buildings such as hospitals and schools with high safety requirements
Power circuits for HVAC, pump rooms and large equipment to prevent electrical fires
- Special safety applications
가혹한 환경: wet, 무미 건조한, corrosive locations (화학적인, textile plants)
Locations requiring high-level fire protection: warehouses, power distribution rooms
Heavy-duty equipment with frequent starts: 크레인, 압축기, to detect insulation failure
- 교체 모델
4.1 CHINT Upgrades / 교체품
| 교체 모델 | 주요 차이점 | 애플리케이션 |
| NM1LE800H-4300-800A | Breaking capacity upgraded to H-class (50kA@400V) | Systems with high short-circuit current near transformers |
| NM1LE800S-4308-800A | With motorized operator | Remote control, unattended automation systems |
| NXMLE800S-4300-800A | New Kunlun Series, 더 작은 크기, improved performance | System upgrades, new installations |
| NM1LE800S-4310-800A | With undervoltage release | Critical circuits requiring undervoltage protection (예를 들어, fire power) |
4.2 Cross‑Brand Equivalents
| 상표 | 모델 | 주요 일치 매개변수 | 메모 |
| 씨줄 | T6N800 PR221DS-LSI+RCD 800 4피 | In=800A, Icu=36kA, 4피, earth leakage | 전자여행 + leakage module, higher precision |
| 슈나이더 | NSX800F TM800D+Vigi 4P | In=800A, Icu=36kA, 4피, thermomagnetic + 누출 | Identical breaking capacity, reliable Vigi module |
| 지멘스 | 3VA6880-6EL32-0AA0+3VA9180-0AA00 | In=800A, Icu=36kA, 3P+N, leakage add-on | 3VA series with leakage kit, 비슷한 성능 |
| 미쓰비시 | NF800-CW+leakage module 4P | In=800A, Icu=35kA, 4피, thermomagnetic + 누출 | Japanese brand, suitable for Japanese-equipped systems |
- 선택 & 애플리케이션 노트
- 차단용량 매칭
Ensure short-circuit current ≤ 36kA@400V; otherwise use NM1LE800H (50그만큼).
S-class breaking capacity decreases at higher voltages; recheck for 690V systems.
- Earth leakage current selection
Personal protection / wet areas: IΔn = 30mA
장비 & fire protection: IΔn = 100–300mA
모터 & high-power loads: IΔn = 300–500mA to avoid nuisance tripping during startup.
- Poles and N‑pole configuration
4-pole for three-phase four-wire systems only; N wire must be connected.
N pole only detects leakage; it does not break short-circuit current (except special versions).
For interruptible N pole, select a special model with “N-pole breaking”.
- 설치 & 배선
Fixed mounting; allow ≥180mm depth for heat dissipation.
Use copper busbar/cable rated for 800A: ≥240mm² cable or 40×10mm busbar recommended.
Must be installed vertically, tilt ≤15°.
- 유지 & replacement
Test leakage function monthly using the TEST button.
Inspect contacts after short-circuit operation; replace if necessary.
For upgrades, prefer CHINT NXMLE Kunlun Series (호환 가능한 치수, better performance).
Leakage module can be replaced separately.
CHINT NM1LE800S-4300-800A is a reliable 800A earth leakage MCCB with triple protection, standard breaking capacity and 4-pole design, ideal for industrial automation and building electrical systems. Selection should consider short-circuit level, leakage requirements and installation space. For better performance and safety, use higher-breaking versions or the new Kunlun series when applicable.
CHINT NM1LE800S-4300-800A – Key Selection Notes
- Breaking Capacity Check
이 모델: S-class = 36kA@400V
If short-circuit current >36그만큼 (near transformer, main incomer), use NM1LE800H (50그만큼).
- 현재 등급
프레임 전류 800A, rated current 800A
For continuous loads ≤800A only; do not overload.
- 폴란드 & System Type
4300 = 4P (3Ph+N) + thermomagnetic trip
For three-phase four-wire (380V+N) systems only; N wire must be connected.
N pole does not break short-circuit current, only for leakage detection.
- Earth Leakage Selection
Available settings: 30/100/200/300/500엄마
Personal safety / wet areas: 30엄마
장비 / fire protection: 100–300mA
Motors / high-power loads: 300–500mA (prevents startup nuisance tripping)
- Trip Characteristics
열자기: 초과 적재 + 순간 단락 보호
Instantaneous range: 5-10인치
Set higher for motors to avoid tripping during startup.
- 설치 & 환경
Must be vertical, tilt ≤15°
Ambient: -5℃ ~ +40℃; derate at high temperature
IP20 open type; install in enclosure for dusty, wet or oily areas.
- 배선 & 열 방출
Use 800A-rated conductors:
≥240mm² copper cable or 40×10mm copper busbar
Terminations must be tightly torqued to avoid overheating.
- 유지 & 안전
Press TEST button monthly to verify leakage function.
Leakage module replaceable separately.
Not recommended for three-phase three-wire systems without neutral.
- Upgrade Recommendation
New CHINT NXMLE800S series: better performance, 더 작은 크기
Preferred for replacement or upgrade (dimensions nearly compatible).
