This is a cross reference between Prosurge’s Surge Protection Device model with DEHN’s Surge Protection Devices model. This is only for reference, please consult us when in doubt. DEHN Model No. Prosurge Model No. DEHNventil M2 TNC 255 FM BP25VT/275-S/3P DEHNventil M2 TNS 255 FM BP25VT/275-S/4P DEHNventil M2 TT 255 FM BP25VT/275-S/3PN100 DEHNventil M2 TT 2P [...]