2-pair DIN rail plug-in Data surge protector
DLA2-24D3
DLA2-24D3
Part Number: 640311
  • Din rail plug-in surge protector
  • 2-pair
  • Un: 24 V
  • Shield wire protection
  • Without line cut-off
  • IEC 61643-21 compliance
  • UL497A

DLA2 surge protectors are designed to protect, against surge voltages due to lightning, terminals equipment connected to industrial buses, telecom lines or datalines. These surge protectors must be installed on symmetrical DIN rail and are available for most of the transmission lines: line voltage from 6 to 170V, bitrate up to 10 Mbit/s. These products are 2-pair surge protectors with removable module for easy maintenance.


Network 4-20mA
Nominal line voltage Un 24 V
Max. DC operating voltage Uc 28 V
Max. frequency f max. > 3 MHz
Insertion loss < 1 dB
Max. load current IL 300 mA
Max. discharge current Imax 20 kA
Line inductance No
Protection mode(s) Common/Differential mode
Protection level Up 40 V
Max. capacitance C < 50 pF
Impulse current Iimp 5 kA
Line/Line Nominal discharge current In L/L 5 kA
Line/Ground Nominal discharge current In L/PE 5 kA
Line resistance < 4.7 Ohm
Technology GDT+Clamping diode
SPD configuration 2-pair + shielded
Connection to Network screw terminal - cross section 0.4-1.5 mm²
Format Plug-in DIN box
Mounting Symmetrical rail 35 mm (DIN 60715)
Housing material Thermoplastic UL94-V0
Operating temperature Tu -40/+85°C
Protection rating IP20
Failsafe mode Short-circuit - transmision cut-off - fault mode 2
Disconnection indicator Transmission interrupt
Spare module(s) DLA2M-24D3
Remote signaling of disconnection No
Dimensions See diagram
Standards compliance IEC 61643-21 / EN 61643-21 / UL497A
Certification UL listed