Schneider MC-4/11/10/400 is a high-performance miniature circuit breaker (MCB) developed by Schneider Electric for low-voltage power distribution systems, widely applied in commercial buildings, industrial workshops, residential complexes, 

and small-scale industrial equipment. As a core protection component in low-voltage circuits, it is designed to provide reliable overcurrent protection (including overload and short-circuit protection) for branch circuits and connected electrical devices.

The model “MC-4/11/10/400” denotes key technical parameters: it features 4 poles (suitable for three-phase four-wire circuits), a rated current of 10A, and a rated breaking capacity of 400A at low voltage levels, 

ensuring it can safely interrupt fault currents without damage. Adopting Schneider’s advanced thermal-magnetic tripping technology, the MCB responds quickly to overload conditions (via thermal elements) and short-circuit faults (via magnetic elements), 

effectively preventing circuit overheating, wire insulation damage, or equipment burnout caused by abnormal currents.

With a compact and modular design, Schneider MC-4/11/10/400 fits standard DIN rail mounting, facilitating easy installation and integration into existing low-voltage distribution panels. 

It complies with international electrical standards (e.g., IEC 60898) for safety and performance, and its flame-retardant housing material enhances fire resistance in case of electrical faults. Additionally, 

the MCB maintains stable performance across a wide operating temperature range, adapting to diverse environmental conditions, thus ensuring long-term reliable protection for low-voltage power distribution systems.

中文产品描述

Schneider MC-4/11/10/400 是施耐德电气为低压配电系统研发的高性能微型断路器（MCB），广泛应用于商业建筑、工业车间、住宅小区及小型工业设备的配电保护场景，作为低压电路的核心保护组件，

主要为分支电路及所连接的用电设备提供可靠的过电流保护（包括过载保护与短路保护）。

型号 “MC-4/11/10/400” 蕴含关键技术参数：其采用 4 极设计（适配三相四线制电路），额定电流为 10A，额定分断能力达 400A（低压工况下），可在故障电流发生时安全分断电路，避免自身损坏或电路进一步故障。

该微型断路器搭载施耐德先进的热磁脱扣技术 —— 针对过载故障，通过热元件实现延时脱扣，防止电路长期过热；针对短路故障，通过磁元件实现瞬时脱扣，快速切断大电流，有效避免因异常电流导致的线路绝缘烧毁、设备损坏甚至火灾风险。

在结构与兼容性上，Schneider MC-4/11/10/400 采用紧凑模块化设计，适配标准 DIN 导轨安装，便于快速嵌入现有低压配电柜，简化安装与扩容流程。

产品符合 IEC 60898 等国际电气标准，在安全性与性能上达到行业规范；外壳采用阻燃材料，提升故障场景下的防火能力。此外，该断路器可在较宽的温度范围内保持稳定性能，能适应不同环境下的配电需求，为低压配电系统的长期安全运行提供持续可靠的保护。