DD25-24V D-sub 25-pin dataline surge protector

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DD25-24V D-sub 25-pin dataline surge protector

Name: DD25-24V D-sub 25-pin dataline surge protector
Brand: CITEL
SKU: DD25-24V
Availability: InStock
Rating: 5 (1 reviews)

Series

DD
Model

DD25-24V
Brand / Made in

CITEL / FRANCE

D-sub dataline surge protector
Network: RS232, RS485, 4-20mA
SPD configuration: 25 wires, 25-pin connector
Max. DC operating voltage: 40 Vdc
Max. discharge current: 20 kA
Fast and easy installation
Standards compliance: IEC 61643-21 / EN 61643-21 / UL497B
Certification: UL listed

D-SUB DATALINE SURGE PROTECTOR

These surge protectors are designed to protect sensitive equipment linked to datalines equipped with D-Sub connectors, as RS232, RS422 and RS485 lines.

They protect against surge voltages due to lightning or switching operations. They are equipped with D-sud connectors for fast and easy maintenance. In order to comply with the line configuration, all the wires are transmitted and protected. Available 9, 15 and 25-Pin D-Sub Connectors versions.

The surge protection diagram is based on ultra-fast clamping diodes in to reach an high level of efficiency. Nevertheless, their low discharge capability make them usable only to protect indoor transmission lines.

DD25-24V diagram

D: Clamping diode

Product specifications

Product specifications
product manual
Download file

ELECTRICAL CHARACTERISTICS

Network: RS232, RS485, 4-20mA
Nominal line voltage Un: 24 V
Max. DC operating voltage Uc: 40 Vdc
Max. frequency f max.: > 10 MHz
Max. data rate: < 40 Mbps
Insertion loss: < 1 dB
Max. load current IL: 750 mA
Nominal discharge currentC2 Category In: 5 kA
Line/Line Nominal discharge current C2 Category In L/L: 300 A
Line/Ground Nominal discharge current 8/20µs Test x 10 - C2 Category In L/PE: 300 A
Max. discharge current max. withstand @ 8/20µs by pole Imax: 20 kA
Total Maximum discharge current max. total withstand @ 8/20µs Imax total: 20 kA
Impulse current2 x 10/350µs Test - D1 Category Iimp: 2.5 kA
Line inductance: no
Protection mode(s): Common/Differential mode
Protection level Following the test category C3 (IEC61643-21) - L/L Up: 18 V (L/L), 20 V (L/PE)
Max. capacitance: < 30 pF
Line resistance: < 4.7 ohm

MECHANICAL CHARACTERISTICS

Technology: electrode diode
SPD configuration: 25 wires
Connection to Network: D-Sub 25 pts male/female Input/output
Format: In/out D-Sub connector unit
Mounting: On cable
Housing material: Thermoplastic UL94 V-0
Protection rating: IP20
Outdoor application: no
Failsafe mode: Short-circuit - transmision cut-off - fault mode 2
Disconnection indicator: Transmission interrupt
Spare module(s): S480-24D3
Remote signaling of disconnection: no
Pinout: all wires transmitted and protected

STANDARDS

Standards compliance: IEC 61643-21 / EN 61643-21 / UL497B
Certification: UL listed

Installation

DD25-24V surge protectors are connected in serial on the network.
The protected equipment must be nearby (protector/equipment distance less than 10 m long). If this rule cannot be followed, «secondary» protection must be installed near the equipment (coordinated surge protection).
The total length connection wires to network must be lower than 0.5 m in order not to increase the protection level (Up) provided by the SPD.
The protection wire coming from the SPD must be connected to the bonding bar of the electrical panel.
Local earthing resistance must be in compliance with the electrical rules.