DK-DCM Hot-plug Signal Surge Protective Device

by Guangxi Dikai Sci&Tech Co., Ltd


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  Product Introduction:

1. Standard: This product is designed according to national standard GB/T 18802.21-2016. It is accordance with the criterion of Low-voltage Surge Protective Devices-Part 21: Telecommunication and Signal Network Surge Protective Device(SPD)—–Performance Requirement and Test Method  Requirement of National Standard.

2. Product structure: With good sealing, it is designed as module and 35mm din-rail mounting. Module can be plugged in and out on the live without affecting the normal transmission of signal line. Built in multi-level discharge pressure limiting circuit, it is with easy installation and maintenance.

Product Features: With features of low residual voltage, quick response, low transmission loss, large flow rate, long life, easy installation and wiring, simple maintenance, etc.

Application Scope:1) Industry control & petrochemical system: analog signal line, switch value signal line, dedicated communication line, data signal line, 485 signal line.

2) Security system: control signal line, communication signal line.

3) Other control system: telemetry line, remote control line, comunication line.

Product Item No.

Item No. Rated Voltage Uo Maximum continuous operating voltage Uc Protection Mode Up
DK-DCM 12 DC12V DC15V 40V
DK-DCM 24 DC24V DC30V 60V
DK-DCM 48 DC48V DC58V 100V


Technical Parameter:

SPD Type 4 Ports(Lines in series)
Rated Voltage Uo Refer to the  Specs
Maximum continuous operating voltage Uc Refer to the  Specs
Nominal discharge current In(8/20μs) 10kA
Maximum Discharge Current Imax(8/20μs) 20kA
Voltage Protection Level Up(10/700μs) Refer to the  Specs
Respond Time <1ns
Insert Loss <0.5dB
Protection Mode Core-PE,Core-Core
Shell Protection Material Pa66
Shell Flame Retardant Rating UL94-V0
Enclosure Protection Class IP20
Color Blue Bas,Orange module
Size(mm) 106×65×14
Damage Status Signal Off
Working Temperature -25℃~+70℃
Relative Humidity ≤95%
Installation Standard 35mm Din Rail Mounting
Signal Line Connector Type Clamp Wire Frame Terminal
Signal Line Screw Specification M2.5
Cross Section of Signal Line Connector(BVR) 1mm2~4mm2
SPD Minimum Cross Section of Connecting Wire BVR-6mm2
SPD Maximum Cross Section of Connecting Wire BVR-35mm2
PE Connector Type Screw Fixed Terminal
PE Screw Specification M4
Cross Section of PE Connector (BVR) 4mm2~6mm2



Product Installation Diagram:


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Guangxi Dikai Sci&Tech Co., Ltd

Established in June, 1989, Guangxi Dikai Sci&Tech Co., Ltd. arouses its all efforts and strives for progress for near 30 years to be the most well-known professional lightning protection company.
Guangxi Dikai Sci&Tech Co., Ltd concentrates on new technology, research and development on new products, production and service. With class-A qualification of detection of lightning protection device, Guangxi Dikai Sci&Tech Co., Ltd has provided more than 10 millions cases of lightning protection project design, product installation, inspection and maintenance, technical consulting service. Products are well sold all over the world.
Dikai Company covers five product series: direct lightning protection products, power line surge protection products, signal line surge protection products, combined series surge protection products, and grounding resistance reduction products, with more than 100 varieties of products.
Dikai Company is located in national level high-tech zone with an area of 40000 square meters. It has R&D center, several production lines of SPD, National Accredited Laboratory(CNAS)/Testing Center of lightning protection products, and lightning proving ground. It is the autonomous region level enterprise technology center, owning nearly hundred patents. Products are CE certified. Dikai Company has passed through the three System Certifications of ISO9001 International Quality Management System, ISO14001 Environmental Management System, OHSAS18001 Occupational Health and Safety Management System(OHSAS).
Dikai Company always adheres to business service concept of “Customer First and Sincerity Forever”, based on China, go toward world, endeavoring to reduce the damage from lightning.