접촉기,회로 차단기,태양광 인버터,전기 계량기,태양 전지
제품개요
The Schneider NSX250A is a 250A frame current rating product under the ComPacT NSX series of 성형 케이스 회로 차단기. Specifically designed for medium and low-voltage power distribution systems, it features high reliability, 모듈식 디자인, and digital characteristics, and is a key component of Schneider’s EcoStruxure power distribution solutions.
핵심 매개변수
| 매개변수 항목 | 매개변수 값 | 설명 |
| 프레임 전류 | 250에이 | Maximum current-carrying capacity |
| 정격전류 | 40/100/160/250에이 | Optional specifications, must match the load |
| 차단 용량 | 36그만큼 (F형) | Maximum breaking current in case of short circuit |
| 50그만큼 (N형) | ||
| 70-100그만큼 (Type H/S) | ||
| 정격전압 | 690뷔와 | 최대 작동 전압 |
| 1000뷔와 (특수 모델) | ||
| 극수 | 3P/4P | 삼상 / 3상 4선식 시스템 |
| 트립 유닛 유형 | TMD (열자기) | Selection of protection mechanism |
| 미세학 2.2/4.2/6.2/7.2 (전자) | ||
| 설치 방법 | 고정형 | Flexible installation options |
| 플러그인 유형 | ||
| 인출형 |
Trip Unit Comparison
1️⃣ TMD (Thermomagnetic Trip Unit)
작동 원리: Thermal elements (bimetallic strips) detect overloads, and electromagnetic elements detect short circuits.
특징: 간단한 구조, 저렴한 비용, narrow setting range (0.7~1In).
애플리케이션: General power distribution protection scenarios that do not require precise parameter adjustment.
2️⃣ Micrologic (전자 트립 유닛)
작동 원리: Digital circuits perform monitoring and protection, providing multiple protection functions.
특징:
– Wide setting range (0.4~1In) and high accuracy (±15%).
– Provides maintenance information such as contact wear and operation count.
– Supports multiple protection functions: 초과 적재, short-circuit short delay, 지락, 등.
애플리케이션: Industrial and commercial power distribution that requires high protection accuracy and intelligent monitoring.
응용 시나리오
산업용 배전 시스템: Protection for mechanical equipment and production lines.
상업용 건물: Main circuits in shopping malls and office buildings.
데이터 센터: Power systems requiring high-reliability protection.
주거용 배전: Main switches providing comprehensive protection.
발전기 보호: Supported by special models (TM-G).
주요 장점
- 높은 신뢰성: Adopts a double-rotating contact structure with a breaking capacity of up to 150kA to ensure system safety.
- 모듈형 디자인:
– Multiple trip units optional to adapt to different load characteristics.
– Rich accessories: 보조 접점, 알람 접점, 션트 트립 장치, 등.
– 전기 작동 메커니즘 (≥160A) 원격 제어를 지원합니다.
- Digital Characteristics:
– Electronic trip units provide precise protection and fault diagnosis.
– Supports integration with the Schneider EcoStruxure system to realize smart grid management.
선택 포인트
- Rated Current Selection: ≥ Calculated load current and ≤ 250A.
- 차단용량 선택:
– General civil/commercial use: 36그만큼 (F형) 충분하다.
– Industrial environments: 50그만큼 (N형) or higher.
– Special occasions (예를 들어, power plants): Consider 70-100kA (Type H/S).
- 여행 단위 선택:
– Simple power distribution: TMD (비용 효율적).
– Critical loads: 미세학 (지능형 보호).
- 극수 선택:
– Three-phase equipment: 3피.
– 3상 4선식 시스템: 4피.
가격 참고
TMD Type (36kA/50kA): 약 1,600-2,500 인민폐
Micrologic Type: 약 2,500-5,000 인민폐 (depending on function complexity)
요약
The Schneider NSX250A circuit breaker is a high-performance and high-reliability medium-voltage power distribution protection device. It is suitable for various industrial and commercial scenarios and offers multiple options ranging from basic thermomagnetic protection to intelligent electronic protection. 선택 시, the appropriate model and configuration should be determined based on actual load characteristics, short-circuit current levels, and protection requirements。
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