智能后备保护器(SCB )是根据IEC61643- 4- -43 中430.3条:"在电路造成危险前，应该采用合适的过电流保护装置”与SPD配套使用。
智能后备保护器(SCB)。串联在SPD回路上，能自动识别雷电流和短路电流,在雷电流冲击下不脱扣，可在极短的时间内切断3A以上的低短路电流,防止SPD起火。
Inelligent backup protector (SCB) is used with SPD according to 430.3 of iec61643- -4- -43: "appropriate overcurrent protection should be used before the circuit causes danger".
Inelligent backup protector (SCBI. Connected in series on the SPD circuit, it can automatically identify lightning current and short circuit current. Without tripping under the impact of lightning current, it can cut off the low short circuit current above 3A in a very short time and prevent SPD from catching fire.
智能后备保护器是通过双通道设计，一通道是在电压小于等于2倍Uo时从电磁线圈通道通过，形成3A电流脱扣值;另一通道在大于2倍Uo时从间隙放电通道通过，形成大电涌电流的通过
The itelligent backup protector is designed through two channels. One channel passes through the electromagnetic coil channel when the voltage is less than or equal to 2 times Uo, forming the 3A current tripping value. The other channel passes through the gap discharge channel at more than 2 times Uo, resulting in the passage of a large surge current
1、本产品采用高分断结构设计，触点分断能力更高;
2、密封式间隙通道，点火电压更稳定;灭弧性能更好
3、外观、结构尺寸及技术规格的多样性，可满足不同环境需求;
4、保护模式完整性，能针对相线、中性的保护，及雷击电涌和操作过电压的保护。
1. This product adopts high break structure design, with higher breaking capacity of contact;
2, sealed gap channel, ignition voltage more stable; Better arc extinguishing performance
3. The diversity of appearance, structure size and technical specifications can meet different environmental requirements;
4, protection mode integrity, can be against phase line, neutral protection, lightning surge and operation overvoltage protection.
用户在产品加工定制或订货时，应详细标明产品系列、颜色、型号、级数、电压、数量。例如: SCB系列全绿SAF- -SCB-I- 80/4P,20台。
Users in the product custom processing or ordering, should be marked product series, color, model, series, voltage,quantity. For example: SCB series all green SAF- -SCB-1-80 / 4P, 20 sets.
