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917988 DCO SD2 E 24

919988 DCO RK E 24

919987 DCO RK E 12

919941 DCO RK MD 24

927244 BCO ML2 BD 24

927944 BCO CL2 BD 24

Here’s a breakdown of the DEHN surge protection devices.

DEHN Surge Protection Modules

Model	Nominal Voltage	Max Discharge Current	Application
DCO SD2 E 24 (917988)	24V DC	0.6kA	Signal circuit protection with disconnection function
DCO RK E 24 (919988)	24V DC	0.6kA	Fine-limiting surge protection for two single lines
DCO RK E 12 (919987)	12V DC	0.8kA	Surge protection with terminal blocks for IT systems
DCO RK MD 24 (919941)	24V DC	10kA	Energy-coordinated surge arrester for floating signal circuits
BCO ML2 BD 24 (927244)	24V DC	10kA	Modular lightning current and surge arrester for measuring and control circuits
BCO CL2 BD 24 (927944)	24V DC	10kA	Compact surge arrester for data bus interfaces and IT systems

Key Features Across the Series

✅ High Surge Protection – Handles up to 0.6kA–10kA discharge current.
✅ Compact & Pluggable Design – Easy integration into control panels.
✅ LifeCheck Monitoring – Detects pre-damaged arresters for preventive maintenance.
✅ Wide Voltage Range – Supports 12V, 24V DC applications.
✅ IEC & ATEX Certified – Meets industry standards for surge protection.