Контактор,автоматический выключатель,солнечный инвертор,электрический счетчик,солнечные батареи
- Basic Model Meaning & Positioning Difference
| Модель | Значение | Позиционирование продукта |
| XT1B | XT1 series + Б (Basic) basic breaking capacity | Compact switch-disconnector / economic MCCB, meets basic protection requirements |
| XT1N | XT1 series + Н (Normal) стандартная отключающая способность | 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 (max. 160А) and share the same physical dimensions and mounting method.
- Core Technical Parameters Comparison
| Элемент | XT1B Series | XT1N Series | Key Difference |
| Номинальная предельная отключающая способность при коротком замыкании (Ику, 380В и) | 18тот | 36тот | XT1N has twice the breaking capacity, suitable for systems with higher short-circuit current |
| Rated service short-circuit breaking capacity (Икс, 380В и) | 18тот (100% Ику) | 36тот (100% Ику) | XT1N can withstand more severe short-circuit faults and remain usable |
| Frame current (Inm) | 160А | 160А | Same frame, identical dimensions |
| Rated current range (В) | 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 |
| поляки | 3П/4П | 3П/4П | Same pole configuration |
| Номинальное напряжение изоляции (Уи) | 690В и | 690В и | Same insulation level |
| Rated operational voltage (Уэ) | Up to 690V AC/500V DC | Up to 690V AC/500V DC | Same voltage range |
| Механическая выносливость | 25,000 operating cycles | 25,000 operating cycles | Same mechanical durability |
| Mounting type | Зафиксированный / plug-in, compatible with 35mm DIN rail | Зафиксированный / plug-in, compatible with 35mm DIN rail | Same mounting flexibility |
| Typical applications | Lighting, small fans, general socket circuits, residential distribution | Industrial distribution, motor protection, main circuits in commercial buildings, high-reliability loads |
- In-depth Analysis of Key Performance & Приложения
3.1 Practical Impact of Breaking Capacity Difference
XT1B (18тот): Suitable for final distribution with low short-circuit current, например, residential, small shops, office final circuits; fault current usually ≤10kA
XT1N (36тот): Suitable for main distribution in industrial plants, large commercial centers, and circuits near transformers, where short-circuit current can reach 20–30kA
3.2 Тип продукта & Functional Positioning
XT1B: Also functions as a load break switch, complies with IEC 60947-3 isolation requirements, 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 Справочник по выбору
| Selection Factor | Recommended XT1B | Recommended XT1N |
| Ток короткого замыкания системы | ≤15kA | ≥15kA and ≤36kA |
| Приложение | Final distribution in civil buildings, small loads, cost-sensitive projects | Industrial environments, motor protection, critical loads, main commercial circuits |
| Protection priority | Базовая защита + изоляция | Full protection + высокая надежность |
| Budget | Strict budget, cost-performance focus | Medium budget, long-term reliability focus |
- Установка & Maintenance Compatibility
- Physical compatibility: Identical mounting dimensions (width 70mm, height varies slightly by pole count), directly interchangeable without modifying panel cutouts
- Совместимость аксессуаров: Standard accessories such as auxiliary contacts, контакты сигнализации, 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.
