Suzhou Industrial Park Kejia Automation Co., Ltd.

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Power SPD

Class I (T1) Power SPD

KDY-I-12.5/440/
surge pro

KDY-100B/400/
surge prote

KDY-I-50/385/
surge prote

KDY-I-25/440/
surge prote

KDY-I-25R/440/
surge prot

KDY-I-25RX/440/4P
surge p

KDY-I-25S/440/
surge pro

KDY-I-15/440/
surge prot

KDY-I-15RX/440/
surge pr

Class II (T2) Power SPD

KDY-100/440/
surge protec

KDY-80/385/
surge protec

KDY-65/440/
surge protect

KDY-60/320/
surge protect

KDY-40/440/
surge protect

KDY-40/320/
surge protec

KDY-20/320/
surge protect

KDY-20B
PCB-mounted Surg

KDY-40B
PCB-mounted Surg

KDY-40 DC
surge protecti

KDY-20 DC surge protective de

YH1.5W-0.28/1.3
Low-Volt

Class III (T3) Power SPD

NKP-DY-IIIL
Power Surge P

KDY-20L/S LED
Street Ligh

Renewable Energy SPD

NKP40PV/1200R
PV Surge P

NKP40PV/1500R
PV Surge Pr

NKP-40R/F750/3P+0
Wind Pow

NKP-40R/F750/3P
Wind Powe

Backup Protection Device (BPD)

KHB Series SPD Backup Protecti

Power SPD Enclosure

NKP-DY-I/II/IIIX
Power Su

Signal SPD

Network Signal SPD

NKP-TEL-5C 100Mbps 4-Wire Netw

NKP-TEL-5C-K1 Gigabit Ethernet

NKP-TEL-5C-8 100Mbps Network 8

NKP-TEL-5U Rack-mounted 100Mbp

NKP-TEL-5U-K Gigabit Network S

NKP-TEL-5C-2a Network/Power Co

NKP-TEL-5C-3 Triple Protection

NKP-POE-WD/J Integrated Networ

Antenna Feeder SPD

NKP-TEL-4C-T Antenna Feeder Li

Control Signal SPD

KTL-4 Four-Wire Signal Lightni

KTL-3 Three-Wire Signal Lightn

KTL-2 Two-wire Signal Surge Pr

NKT-4 Low-Frequency
Signa

NKP-TEL-2J Power MODEM Signal

NKP-TEL-2J-S Power MODEM Signa

NKP-TEL-2J-R Power MODEM Signa

NKP-TEL-2J-RJ45 Power MODEM Si

NKP-TEL-3J-K Single-Channel Sw

NKP-TEL-3J-K2 Dual-Channel Swi

Video Signal SPD

NKP-TEL-4C-3a Video-Control-Po

NKP-TEL-4C-2a Video-Power Dual

Audio Signal SPD

NKP-TEL-1C Single-Line Telepho

NKP-TEL-1U Multi-Line Telephon

NKP-TEL-1J Dual-Line Communica

NKP-TEL-1Ja Single-Channel Com

Digital Signal SPD

NKP-TEL-3J-1 RS232 Port SPD

NKP-TEL-3J-2(Dual) RS485 Dual-

NKP-TEL-3J-2(Single) RS485 Sin

NKP-TEL-3J-3 RS422 Port Surge

NKP-TEL-3C-9z RS232 9-pin Sign

Analog Signal SPD

NKP-TEL-6J Single-Channel 2-Wi

NKP-TEL-6J-2 Dual-Channel 4-Wi

NKP-TEL-6J-R Single-Channel 3-

NKP-TEL-6J-3
2-4 Wire Ana

PDUs

Rack PDU

NKP-DY-U Multi-purpose PDU

NKP-DY-IIIU Surge-Protected PD

NKP-DY-U-32a PDU

NKP-DY-SY-06 Dual-power over/u

Cabinet Power Distribution Box

NKP-DY-JX Cabinet Power Distri

Power Strip

KDY-IIIC Lightning Protection

KDY-CZN-03 PDU

KDY-CZN-05 PDU

KDY-CZB-05 PDU

KDY-CZB-03 PDU

AC30-NB Modular Socket Outlet

AC30-WK Modular Socket Outlet

Intelligent PDU

NKP-DY-TU Network-Enabled Smar

NKP-DY-TU-32a Smart PDU

NKP-DY-TU Intelligent LCD wit

Automatic Transfer Switch

NKP-DY-SU ATS

KVM Device

Supervisory control unit

Transmitter

NKB-20D DIN - rail AC Current

NKB-20S Molded-Case AC Current

NKB-20RX Smart AC Current Tran

NKB-21D DIN-rail AC Voltage Tr

NKB-21S Molded - Case AC Volta

NKB-24D DIN-rail Temperature T

NKB-24S Plastic Enclosure Temp

NKB-24RX Intelligent Temperatu

NKB-24X Panel-mounted Temperat

NKB-25S Plastic Enclosed Frequ

NKB-26D DIN-rail DC Current Tr

NKB-26D Signal Isolation Trans

NKB-26S Molded-Case DC Current

NKB-26RX Smart DC Current Tran

NKB-27D DIN Rail-Mounted DC Vo

NKB-27PD Battery Voltage Trans

NKB-27RX Smart DC Voltage Tran

NKB-27S Molded-Case DC Voltage

NKB-28S Molded-Case Power Tran

NKB-29S Molded-Case Power Tran

NKB-33X Gear transmitter

Automatic Recloser

KCH-220 Automatic Reclosing Po

Lightning Stroke Counter

NKP-LJ-06Y Lightning Recorder

NKP-LJ-03 Intelligent Lightnin

NKP-LJ-04 Lightning Recorder w

NKP-LJ-05 Lightning Recorder w

Intelligent Device

KT-3a Portable RTU Input/Outpu

Intelligent synthetic

Security Monitoring System

Intelligent Integrated Lightning Protection System

Power Safety System for Construction Sites

Pedestrian Crossing System

New Product

Solutions

Applications in Power Systems

Applications of Municipal Lightning Protection

Applications of Traffic Lightning Protection

Applications of Security System

Services

Quick Selection Table

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Technical Articles

Consulting and Services

Anti-counterfeiting Inquiry

Laboratory

News

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Products

ALL

Power SPD

Signal SPD

PDUs

Supervisory control unit

Intelligent synthetic

Power SPD

It is a surge protection device selected for the power supply system. Its main function is to protect the power system from the hazards of induced lightning and direct lightning strikes.

Signal SPD

Widely applied in lightning protection for networks, communications, broadcasting, and surveillance systems, it suppresses EMP surges, blocks electrical overloads, and enhances equipment reliability.

PDUs

Commonly used as a power distribution unit at the cabinet level in data center low-voltage power systems, it primarily supplies electricity to servers and network equipment.

Supervisory control unit

It covers multiple fields ranging from industrial automation control to power system protection and control, as well as energy management and centralized monitoring.

Intelligent synthetic

Through real-time monitoring, data analysis, environmental safety detection, energy consumption management, and operation maintenance, it enhances energy efficiency, reduces costs, and improves system security and stability.

Power SPD

Signal SPD

PDUs

Supervisory control unit

Supervisory control unit

Intelligent synthetic

Intelligent synthetic

Class I (T1) Power SPD

Class I (T1) Power SPD

It is installed at the main incoming line of the main distribution box or the residential distribution cabinet.

Class II (T2) Power SPD

Class II (T2) Power SPD

It is mainly applied in the branch distribution cabinets of buildings.

Class III (T3) Power SPD

Class III (T3) Power SPD

It is mainly applied to the front end of important equipment to provide meticulous protection for the equipment.

Renewable Energy SPD

Renewable Energy SPD

It is mainly used to protect the photovoltaic system from lightning strikes and power surges, ensuring the continuity and stability of the power supply.

Backup Protection Device (BPD)

Backup Protection Device (BPD)

It is primarily used to provide supplementary protection when the main protective device fails or does not operate in time.

Power SPD Enclosure

Power SPD Enclosure

It is a device specifically designed to protect power systems against lightning strikes.

Class I (T1) Power SPD

Class II (T2) Power SPD

Class III (T3) Power SPD

Renewable Energy SPD

Backup Protection Device (BPD)

Power SPD Enclosure

Control Signal SPD

Control Signal SPD

It is mainly used to protect the signal transmission equipment and lines in industrial control systems, preventing them from being damaged by lightning strikes and power surges.

Antenna Feeder SPD

Antenna Feeder SPD

It is a surge - protection device specially designed to protect coaxial signal interfaces.

Network Signal SPD

Network Signal SPD

Primary function: Shields network equipment from lightning EMP damage, ensures stable data transmission, enhances system reliability, and reduces downtime/maintenance costs.

Video Signal SPD

Video Signal SPD

It's mainly used for the protection of surveillance equipment such as cameras, video switchers and splitters against induced lightning strikes.

Audio Signal SPD

Audio Signal SPD

Designed to safeguard audio signal lines against overvoltage, induced surges, overcurrent, and ESD. Especially optimized for RJ11 telephone audio interfaces.

Digital Signal SPD

Digital Signal SPD

It's mainly used to protect the equipment in high - speed network transmission environments such as Ethernet lines, switches and routers.

Analog Signal SPD

Analog Signal SPD

It is mainly used to protect various analog signal transmission lines, preventing signal equipment from being damaged by lightning or electromagnetic interference.

Control Signal SPD

Antenna Feeder SPD

Network Signal SPD

Video Signal SPD

Audio Signal SPD

Digital Signal SPD

Analog Signal SPD

Rack PDU

Rack PDU

Cabinet power distributors distribute input power to multiple devices, enabling centralized control, protecting equipment, simplifying wiring, and improving cabinet power management.

Cabinet Power Distribution Box

Cabinet Power Distribution Box

This system offers multiple series specifications to optimize cabinet power distribution. Featuring versatile functions, flexible installation, and modular plug configurations, it adapts to diverse power environments.

Power Strip

Power Strip

It is widely applied and almost covers the electricity demand of households, offices and various event venues.

Intelligent PDU

Intelligent PDU

With applications spanning from server rooms and data centers to residential use, the system enhances energy efficiency while boosting reliability and security through intelligent remote monitoring and management capabilities.

Automatic Transfer Switch

Automatic Transfer Switch

Smart power transfer switch that automatically uses backup electricity during blackouts – keeps hospitals, airports, factories and other critical facilities running without interruption.

KVM Device

KVM Device

KVM devices enable multi-computer switching, allowing control of multiple machines with one keyboard/mouse. Ideal for data centers, control rooms, etc., boosting efficiency and saving space.

Rack PDU

Cabinet Power Distribution Box

Power Strip

Intelligent PDU

Automatic Transfer Switch

KVM Device

Transmitter

Transmitter

Converts physical quantities (temperature, pressure, flow, level, etc.) into standard electrical signals for transmission, processing, isolation, and protection, enabling precise process monitoring and control.

Automatic Recloser

Automatic Recloser

Auto-reclosing restores power by automatically closing fault-tripped circuit breakers, improving supply reliability, reducing outage losses, enhancing transient stability, increasing transmission capacity, and preventing unnecessary trips.

Lightning Stroke Counter

Lightning Stroke Counter

Installed on critical equipment like surge arresters, it accurately records operation counts caused by lightning strikes or switching overvoltages, providing essential reference data for power system maintenance and overhaul.

Intelligent Device

Intelligent Device

It has realized the intelligent management and operation in the power industry.

Transmitter

Automatic Recloser

Lightning Stroke Counter

Intelligent Device

Security Monitoring System

Security Monitoring System

It is mainly used for real - time monitoring and recording activities within a place. It is applied in places such as shopping malls, residential communities and warehouses to ensure safety and assist in incident investigations.

Intelligent Integrated Lightning Protection System

Intelligent Integrated Lightning Protection System

Through functions such as real-time monitoring of lightning activities, providing early warning information, automated control of lightning protection equipment, visual management and remote monitoring, it effectively reduces operation and maintenance co

Power Safety System for Construction Sites

Power Safety System for Construction Sites

Pedestrian Crossing System

Pedestrian Crossing System

These systems, by integrating advanced technologies and equipment such as luminous floor tiles and surveillance cameras, not only provide pedestrians with a safer street-crossing experience, but also offer more efficient means of data collection and analy

Security Monitoring System

Intelligent Integrated Lightning Protection System

Power Safety System for Construction Sites

Pedestrian Crossing System

Power system

Transportation

MUNIC

Security

Solution

Power system

It is widely used to detect the real-time operating parameters of AC power in power grids such as substations and power plants. We have long-term experience and accumulation in vertical industries, providing you with industry-focused products and professional solutions.

Transportation

Lightning protection applied in the transportation sector mainly focuses on safeguarding railway, highway, aviation, and other transportation systems from lightning disasters, ensuring traffic safety and smooth flow.

MUNIC

Protect urban infrastructure from lightning damage, including public buildings, water and power supply systems, and urban lighting, to ensure the safety and order of citizens' lives.

Security

It is mainly reflected in the protection of key equipment such as surveillance cameras, alarm sensors, and access control controllers to prevent equipment damage caused by lightning strikes and ensure the normal operation and data security of the security system.

Power system

Transportation

MUNIC

Security

Service

Download

We provide you with comprehensive product white papers, case progress tracking, and access to the latest information. More details can all be found here.

Service and Support

Service and Support

Provide comprehensive after-sales service, embark on the service journey, and present a variety of information.

Laboratory

With a team of researchers, we strive to create a more comprehensive method of electrical control.

Quick Selection Table

Quick Selection Table

Provide a quick product selection guide to help users quickly find the most suitable model and configuration。

About

Suzhou Industrial Park Kejia Automation Co., Ltd. is a high-tech enterprise integrating research and development, manufacturing, marketing, and service. In recent years, the company has launched a full range of multi-functional automation control products and lightning protection devices in intelligent remote monitoring and smart grid projects. These products have been widely used in fields such as electric power, electronics, communications, industry and mining, railways, highways, petrochemicals, finance, and security.

32年

Established in

12+万个

Number of customers served

136万台

Production quantity

27个

Export countries

News

小身材，大作用，揭秘KDY-I-25电涌保护器的超能力！

2024-05-29 11:57

小身材，大作用，揭秘KDY-I-25电涌保护器的超能力！

通常情况下，避雷针和避雷网能有效防止建筑物外部遭受直接雷击。然而，通过电缆、通信线、金属管道等引入室内的感应雷电和浪涌电压所造成的破坏，是外部防雷系统无法避免的。因此，为了确保室内电气设备、通信网络和家用电器的安全，必须使用专用的电涌保护器进行保护。

员工活动丨环太湖徒步之旅，四月阳光下的45公里启程

员工活动丨环太湖徒步之旅，四月阳光下的45公里启程

苏州环太湖1号公路从光福镇开始，沿着太湖一路延伸，途经太湖大桥、西山诸岛、太湖国家旅游度假区、东山景区等等，最后抵达吴江交界。它把光福塔、香雪海、园博园、旺山等多个吴中盛景串珠成链，让你在徒步的过程中，能够深度体验到苏州的文化和历史底蕴。

严正声明

近年，科佳公司发现市场上出现侵犯科佳公司自有知识产权的侵权行为，这严重干扰了市场竞争秩序，损害了经营者及消费者的合法权益，有违诚信经营原则。为维护科佳电气合法权益，推动行业健康发展，现依法郑重声明：

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