접촉기,회로 차단기,태양광 인버터,전기 계량기,태양 전지
- Basic Model Meaning & Positioning Difference
| 모델 | 의미 | 제품 포지셔닝 |
| XT1B | XT1 series + 비 (기초적인) basic breaking capacity | Compact switch-disconnector / 간결한 MCCB, meets basic protection requirements |
| XT1N | XT1 series + N (Normal) 표준 차단 용량 | Standard MCCB with higher breaking performance, for general power distribution protection |
Core positioning: XT1B is an economical basic protection solution, XT1N is a standard high-performance protection solution. Both belong to the XT1 frame (최대. 160에이) and share the same physical dimensions and mounting method.
- Core Technical Parameters Comparison
| 목 | XT1B Series | XT1N Series | 주요 차이점 |
| Rated ultimate short-circuit breaking capacity (중환자실, 380뷔와) | 18그만큼 | 36그만큼 | XT1N has twice the breaking capacity, suitable for systems with higher short-circuit current |
| Rated service short-circuit breaking capacity (IC, 380뷔와) | 18그만큼 (100% 중환자실) | 36그만큼 (100% 중환자실) | XT1N can withstand more severe short-circuit faults and remain usable |
| 프레임 전류 (Inm) | 160에이 | 160에이 | Same frame, identical dimensions |
| Rated current range (~ 안에) | 16A~160A (Thermal-magnetic TMD) | 32A~160A (Thermal-magnetic TMD) | XT1B covers lower currents for more small-power loads |
| Thermal-magnetic release adjustment range | 0.4~1 In | 0.4~1 In | Same protection curve adjustment |
| 폴란드 | 3P/4P | 3P/4P | Same pole configuration |
| 정격 절연 전압 (우이) | 690뷔와 | 690뷔와 | Same insulation level |
| 정격사용전압 (우에) | Up to 690V AC/500V DC | Up to 690V AC/500V DC | Same voltage range |
| 기계적 내구성 | 25,000 작동주기 | 25,000 작동주기 | Same mechanical durability |
| 장착 유형 | 결정된 / 플러그인, compatible with 35mm DIN rail | 결정된 / 플러그인, compatible with 35mm DIN rail | Same mounting flexibility |
| 일반적인 애플리케이션 | Lighting, small fans, general socket circuits, residential distribution | Industrial distribution, 모터 보호, main circuits in commercial buildings, high-reliability loads |
- In-depth Analysis of Key Performance & 응용
3.1 Practical Impact of Breaking Capacity Difference
XT1B (18그만큼): Suitable for final distribution with low short-circuit current, 예를 들어, 주거용, small shops, office final circuits; fault current usually ≤10kA
XT1N (36그만큼): Suitable for main distribution in industrial plants, large commercial centers, and circuits near transformers, where short-circuit current can reach 20–30kA
3.2 제품 유형 & Functional Positioning
XT1B: Also functions as a load break switch, IEC를 준수합니다 60947-3 격리 요구 사항, can be used as a circuit isolating device
XT1N: Standard MCCB focusing on comprehensive protection, providing more reliable overload and short-circuit protection for high-safety electrical systems
3.3 선택 참고
| 선택 요소 | Recommended XT1B | Recommended XT1N |
| 시스템 단락 전류 | ≤15kA | ≥15kA and ≤36kA |
| 애플리케이션 | Final distribution in civil buildings, small loads, cost-sensitive projects | Industrial environments, 모터 보호, 임계 부하, main commercial circuits |
| Protection priority | Basic protection + 격리 | 완전한 보호 + 높은 신뢰성 |
| Budget | Strict budget, cost-performance focus | Medium budget, long-term reliability focus |
- 설치 & Maintenance Compatibility
- Physical compatibility: Identical mounting dimensions (width 70mm, height varies slightly by pole count), directly interchangeable without modifying panel cutouts
- 액세서리 호환성: Standard accessories such as auxiliary contacts, 알람 접점, undervoltage releases are fully interchangeable, reducing spare parts inventory cost
- Consistent operation: Both support manual operation; motor mechanisms can be added with the same logic
The core differences between ABB XT1B and XT1N series are breaking capacity and functional positioning:
XT1B focuses on economy and basic protection, with isolation function, suitable for final distribution.
XT1N focuses on high performance and full protection, suitable for applications requiring higher reliability.
Selection should prioritize evaluating system short-circuit current and load importance, ensuring the breaker’s breaking capacity exceeds the expected maximum short-circuit current, while balancing project budget and long-term maintenance costs.
