Product Description
The DSB-B series surge protector is suitable for TT, IT, TN-S, TN-C-S and other power supply systems with AC 50Hz/60Hz, 380V and below. It can be used as an equipotential connection during lightning strikes. Its design is in accordance with IEC-61643-1 and GB18802.1 (2002 edition) standards. The shell is designed to be installed on a 35mm electrical guide rail. The product has a built-in failure release device. When the power protection fails due to overcurrent overheating and breakdown, the failure release device can automatically disconnect it from the power grid. At the same time, the visual alarm indicator module can be replaced when there is working voltage.  

Product Features
Replace the protector unit without power outage
Can withstand up to 150KA (8/20 μ S) lightning current surge
Remote remote signaling contacts and alarms ■ Action response time less than 25 nanoseconds
The window color indicates the working status of the protector: green (normal), red (fault)
Installation location and application
(B/4) level surge protection (SPD) protection, used for equipotential overvoltage during lightning strikes, installed at the junction of LPZOA or LPZOB zone and LPZ1 zone. Usually installed at the low voltage main distribution cabinet where the conduit enters the line.  

(B/2) It is usually installed at the low voltage main distribution cabinet of the overhead incoming line, and is composed of single pole combinations to select and configure various power supply systems.  

■ Technical parameters

■ Product wiring diagram

DSB-B series surge protector