DEHN BXT ML2 BDS48 Combined Arrester Module 920245

With a maximum discharge current of 40 kA (8/20 µs) and a voltage protection level of ≤1.2 kV, the DEHN BXT ML2 BDS48 combined arrester module delivers robust surge protection for 230 V AC systems.

Overview

The DEHN BXT ML2 BDS48 (model 920245) is a high-performance varistor-based surge protective device (SPD) designed for Type 2 / Class II applications. It is engineered to protect electrical installations from transient overvoltages, ensuring reliable operation of connected equipment.

What stands out

• High discharge capacity: nominal 20 kA, maximum 40 kA (8/20 µs)
• Low voltage protection level (≤1.2 kV) for effective equipment protection
• Fast response time of ≤25 ns
• Follow current extinguishing capability of 100 A rms
• Short-circuit withstand rating of 50 kA rms
• Compact 2-module (36 mm) DIN rail mounting
• Wide operating temperature range: -40 °C to +80 °C

Technical details

• Nominal voltage (Un): 230 V AC
• Max. continuous operating voltage (Uc): 275 V AC
• Number of poles: 2
• Connection: screw terminals, 1.5–35 mm² solid / 1.5–25 mm² stranded
• Housing: thermoplastic, red, UL 94 V-0
• Degree of protection: IP20
• Standards: IEC 61643-11, EN 61643-11

Our verdict

A reliable and compact surge protection module for 230 V AC installations, offering high discharge capacity and fast response in a standard DIN rail format.