DEHN + SOEHNE BLITZDUCTOR XT BXT ML4 BE 24 Combined Arrester Module

Engineered for high-frequency signal lines, the BLITZDUCTOR XT BXT ML4 BE 24 delivers a cut-off frequency beyond 100 MHz, ensuring your measurement and control circuits remain transparent to fast data while staying protected against surges.

Overview

The DEHN + SOEHNE BLITZDUCTOR XT BXT ML4 BE 24 is a pluggable combined arrester module designed for 24 V DC analogue and digital interfaces. It provides reliable protection for 4-pole signal circuits, combining a nominal discharge current of 2.5 kA per line with a low voltage protection level of ≤500 V. Built to IEC 61643-21 standards, this module is ideal for industrial measurement and control technology where space is limited and performance is critical.

What stands out

• High-frequency transparency: >100 MHz cut-off for fast data integrity.
• Compact pluggable design for easy maintenance on DEHNrail bases.
• Robust surge handling: 2.5 kA (8/20 µs) per line, 1 kA (10/350 µs) per line.
• Low capacitance <200 pF minimizes signal distortion.
• Wide operating temperature range from -40 °C to +80 °C.

Technical details

• Nominal voltage: 24 V DC
• Max. continuous operating voltage: 28 V DC
• Nominal discharge current (8/20 µs): 2.5 kA per line / 10 kA total
• Impulse current (10/350 µs): 1 kA per line / 2.5 kA total
• Voltage protection level line-line: ≤500 V
• Voltage protection level line-PE: ≤500 V
• Max. operating current: 0.5 A
• Series resistance: 0.9 Ohm per line
• Cut-off frequency (50 Ohm): >100 MHz
• Capacitance line-line: <200 pF
• Capacitance line-PE: <200 pF
• Operating temperature: -40 °C to +80 °C
• Protection degree: IP20
• Mounting: Pluggable module for DEHNrail base
• Number of conductors: 4-pole (2 signal lines + PE)
• Housing material: Thermoplastic
• Standards: IEC 61643-21 / EN 61643-21
• Test class: C2 / D1

Our verdict

The BXT ML4 BE 24 is a premium surge protection solution for sensitive 24 V signal loops, offering exceptional bandwidth and reliability in a modular, maintenance-friendly package.