断路器的限流技术是当短路发生时，依靠限流型保护装置的快速分断从而使实际故障电流大大低于预期短路电流。
OSM系列小型断路器具有优良的限流能力。例如，对于额定值6A的断路器当出口处预期短路电流为5000A时，其实际通过断路器的电流将限制到不大于350A。即只有预期短路电流的7%。断路器的限流特性将大大减小短路时产生的热效应，减小了故障对系统和设备的影响，保护了电缆和断路器本身。
类型 额定电流 (A) 宽度(9mm的倍数) 产品号
B型 C型 D型
1P 1 2 OSMC32N1B1 OSMC32N1C1 OSMC32N1D1
2 2 OSMC32N1B2 OSMC32N1C2 OSMC32N1D2
3 2 OSMC32N1B3 OSMC32N1C3 OSMC32N1D3
4 2 OSMC32N1B4 OSMC32N1C4 OSMC32N1D4
6 2 OSMC32N1B6 OSMC32N1C6 OSMC32N1D6
10 2 OSMC32N1B10 OSMC32N1C10 OSMC32N1D10
16 2 OSMC32N1B16 OSMC32N1C16 OSMC32N1D16
20 2 OSMC32N1B20 OSMC32N1C20 OSMC32N1D20
25 2 OSMC32N1B25 OSMC32N1C25 OSMC32N1D25
32 2 OSMC32N1B32 OSMC32N1C32 OSMC32N1D32
40 2 OSMC32N1B40 OSMC32N1C40 OSMC32N1D40
50 2 OSMC32N1B50 OSMC32N1C50 OSMC32N1D50
63 2 OSMC32N1B63 OSMC32N1C63 OSMC32N1D63
2P 1 4 OSMC32N2B1 OSMC32N2C1 OSMC32N2D1
2 4 OSMC32N2B2 OSMC32N2C2 OSMC32N2D2
3 4 OSMC32N2B3 OSMC32N2C3 OSMC32N2D3
4 4 OSMC32N2B4 OSMC32N2C4 OSMC32N2D4
6 4 OSMC32N2B6 OSMC32N2C6 OSMC32N2D6
10 4 OSMC32N2B10 OSMC32N2C10 OSMC32N2D10
16 4 OSMC32N2B16 OSMC32N2C16 OSMC32N2D16
20 4 OSMC32N2B20 OSMC32N2C20 OSMC32N2D20
25 4 OSMC32N2B25 OSMC32N2C25 OSMC32N2D25
32 4 OSMC32N2B32 OSMC32N2C32 OSMC32N2D32
40 4 OSMC32N2B40 OSMC32N2C40 OSMC32N2D40
50 4 OSMC32N2B50 OSMC32N2C50 OSMC32N2D50
63 4 OSMC32N2B63 OSMC32N2C63 OSMC32N2D63
3P 1 6 OSMC32N3B1 OSMC32N3C1 OSMC32N3D1
2 6 OSMC32N3B2 OSMC32N3C2 OSMC32N3D2
3 6 OSMC32N3