1-pair monobloc Data surge protector
DLU-12D3
DLU-12D3
Part Number: 640502
  • For DIN rail mounting
  • Monobloc housing
  • 1-pair
  • Un: 12 V
  • Transmission an protection of shield wire
  • IEC 61643-21 compliance
  • UL497A
Installation Sheet

DLU 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 1-pair surge protectors and are made with DIN rail monobloc enclosure


Network Profibus-FMS, Interbus, FieldBus-H1, Batibus, RS232, RS485
Nominal line voltage Un 12 V
Max. DC operating voltage Uc 15 V
Max. load current IL 300 mA
Max. frequency f > 3 MHz
Insertion loss < 1 dB
Max. discharge current Imax 20 kA
Protection mode(s) Common/Differential mode
Protection level Up 30 V
Max. shunt capacitance C < 50 pF
Impulse current Iimp 5 kA
Nominal discharge current In 5 kA
Technology GDT+Clamping diode
SPD configuration 1-pair + shielded
Connection to Network screw terminal - cross section 0.4-1.5 mm²
Format DIN box
Mounting Symmetrical rail 35 mm (EN60715)
Housing material Thermoplastic UL94-V0
Operating temperature -40/+85°C
Protection rating IP20
Failsafe mode Short-circuit - transmision cut-off - fault mode 2
Disconnection indicator Transmission interrupt
Dimensions See diagram
Weight 0.061 kg
Standards compliance IEC 61643-21 / EN 61643-21 / UL497 A
Certification UL listed