SHANDONG CRESIN ELECTRICAL CO., LTD.——Your OEM/ODM Partner for Surge Protection
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Providing total solutions for high standard safety circuit protection.
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To provide high-quality surge protection, Cresin specializes in manufacturing various types of SPDs.
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With over ten years of extensive experience in lightning protection, we can provide you with a complete surge protection solution and highly regarded technical support services.
MOREAC Power SPD
IEC/EN 61643-11 compliant Type 1 and Type 2 surge protective devices. Engineered for robust low-voltage distribution networks and commercial electrical panels.
Imax up to 100kA
385V/420V/440V AC
1P to 4P
DC Power SPD
Reliable DC overvoltage protection with advanced arc-extinguishing technology. Compact design optimized for industrial automation control lines and BESS.
12V to 1000V DC
Fast Response Time
DIN-rail Mount
Solar PV SPD
Dedicated high-voltage AC surge protection for solar inverter grid-tie outputs. Guaranteeing maximum uptime for utility-scale and commercial PV systems.
800V/1100V/1500V AC
Inverter AC-Side
High Stability
Wind Power SPD
Heavy-duty transient voltage surge suppressors built for harsh wind turbine environments. Protecting 690V+ high-voltage AC systems from catastrophic lightning strikes.
690V AC+
High Altitude
High Vibration Resistance
EV Charging Stations SPD
Advanced, ultra-compact surge protection engineered for universal charging infrastructures. From commercial EV piles to AGV and industrial robotics charging docks, we safeguard critical control boards and battery systems against destructive transients.
Ultra-Compact Design
AC & DC Protection
Universal Charging Infrastructure
Signal & Data SPD
Low insertion loss protection for critical communication lines. Safeguarding RS485 control signals and RJ45 ethernet networks without degrading transmission speed.
RS485 & RJ45
Gigabit Ethernet
Ultra-low Insertion Loss
CCTV & Security SPD
Integrated 2-in-1 power and video signal surge protection. Designed to secure outdoor surveillance cameras and smart security infrastructure against grid transients.
2-in-1 Integration
Power & Video
Outdoor Surveillance
Specialized SPDs/Accessories
System-level safety enhancements. Featuring Dedicated Backup Disconnectors (SCB) to prevent main breaker trips, and VT Secondary Grounding Protectors.
PT/VT Protection
System Coordination
Dedicated Backup Disconnectors
HOT SELLING PRODUCTS
We recommend products with true vitality—specifically, the products most widely used and highest-rated by our users.
The CSMS-B40/AC385 series surge protective device dedicated to the AC side of charging piles are in a high-resistance state under normal conditions, with extremely low leakage current, which does not affect the normal operation of the charging piles (stations).
The CSMS-B40 series AC distribution system surge protective device (surge protectors) are designed in accordance with IEC 61643-11 and GB/T 18802.11 lightning protection standards. They are applicable to AC power supply systems of 50Hz, 220v/380v and below, including TN-S, TN-C-S, TT, and IT systems.
CSMS-SV2L series surge protective devices for network cameras are designed and manufactured in accordance with IEC and GB standards. They are suitable for surge protection of surveillance cameras with AC/DC power supply and network ports, featuring a multi-functional integrated design.
The CSMS-B100 series of wind power system-specific surge protective device all adopt overvoltage protection components with excellent nonlinear characteristics. Under normal circumstances, the surge protectors are in a high-resistance state with extremely low leakage current.
WHY CHOOSE US
Crafting an exceptional user experience is our unwavering pursuit; we approach every detail of product design with meticulous rigor.
Professional SPD Manufacturer
We are a dedicated surge protective device factory with integrated R&D and manufacturing capabilities. Equipped with professional electrical R&D engineers, we focus on SPD production for power, PV, telecom and industrial fields. As a real manufacturer rather than a trader, we guarantee competitive factory-direct prices and stable supply capacity for bulk orders.
Strict Quality Control
Rigorous quality management runs through every production link. Raw material inspection, semi-product aging tests and 100% finished product surge impact testing are mandatory. Our in-house lightning test lab follows IEC 61643 standards, our items pass strict performance screening to ensure safe, durable and certified SPDs for global markets.
Customization Support
We offer full OEM & ODM customization solutions. We can adjust SPD specifications, structures, current parameters, logos and packages based on your project requirements. Our technical team develops tailor-made SPDs for special industry scenarios, supporting small trial orders and fast customized sample delivery.
APPLICATION
We provide comprehensive surge protection solutions. Drawing upon over a decade of extensive experience in lightning protection, we offer a complete suite of surge protection solutions, coupled with highly acclaimed technical support services.
CERTIFICATE
As a professional surge protective device (SPD) manufacturer, we understand that certification is the key to global market access. Our products are rigorously tested to meet the most stringent international standards, ensuring safety and reliability for our customers worldwide.
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ABOUT US
Cresin–Professional Manufacturer of AC & DC SPDs, PV & Wind Power SPDs, Signal & Data SPDs and SCBs.
Shandong Cresin Electric Co., Ltd. is a technology-oriented high-tech enterprise. It specializes in providing customers with various voltage levels of AC power supplies, DC power supplies (photovoltaic, wind power) surge protective devices, as well as various analog and digital surge protective devices, surge circuit breakers, and other products and application solutions.
With professional expertise in the technology field combined with today's advanced electronic technologies, Cresin is committed to helping clients and various industries enhance their value and achieve mutual success across the entire industrial chain. Integrity serves as the bridge connecting us to the world. Cresin is dedicated to collaborating openly with partners, fostering interconnectivity and communication between companies and customers, unleashing each party’s potential, and driving joint progress.
Adhering to the principle that "technology is the foundation of our business, and integrity is a habit," Cresin will continue to strive forward with determination under the attention of society and its partners, embracing a brighter tomorrow.
FAQ
Cresin is committed to collaborating openly with its partners to foster connectivity and seamless interaction between the company and its clients, thereby unlocking the potential of every party and driving mutual progress.
Why Do We Need Surge Protective Devices?
Surge protective devices (SPDs) are essential in protecting electronic equipment from the harmful effects of transient overvoltage that can cause damage, system downtime, and data loss. In many cases, the cost of equipment replacement or repair can be significant, particularly in mission-critical applications such as hospitals, data centers, and industrial plants. Circuit breakers and fuses are not designed to handle these high-energy events, making additional surge protection necessary. While SPDs are specifically designed to divert transient overvoltage away from the equipment, protecting it from damage and prolonging its lifespan. In conclusion, SPDs are essential in the modern technological environment.
Surge Protective Device Guidelines
Surge Protective Devices (SPDs) play a critical role in protecting electrical and electronic equipment and to ensure proper protection, it is essential to follow guidelines for selecting and installing SPDs.
How can I get a quotation from CRESIN?
You can send your required SPD type, voltage, pole configuration, discharge current, application scenario, quantity, and destination market. CRESIN will provide a quotation and technical recommendation based on your project needs.
What industries does CRESIN serve?
CRESIN serves solar energy, wind energy, EV charging, telecom, power distribution, industrial automation, security systems, building electrical systems, and OEM electrical equipment manufacturers.
Does CRESIN provide technical support for SPD selection?
Yes. CRESIN provides technical support for SPD selection, wiring diagrams, application scenarios, installation guidance, and product matching for different electrical systems.
How do I choose the right surge protective device?
The correct SPD depends on the power system type, nominal voltage, grounding system, installation location, discharge current, protection level, and application scenario. You can contact CRESIN with your system diagram or technical requirements, and our team will recommend a suitable SPD model.
Can CRESIN support OEM or customized SPD products?
Yes. CRESIN can support OEM branding, customized parameters, product labeling, packaging, and project-based SPD configuration according to customer requirements.
What types of surge protection solutions does CRESIN provide?
CRESIN provides surge protection solutions for solar PV systems, wind power systems, EV charging stations, power distribution systems, telecom networks, CCTV and security systems, and industrial automation systems.
Are CRESIN surge protective devices compliant with international standards?
CRESIN surge protective devices are designed according to major international SPD standards such as IEC 61643 series. For specific models, test reports, technical datasheets, and compliance documents can be provided based on project requirements.
What does CRESIN specialize in?
CRESIN specializes in surge protective devices, including AC power SPD, DC power SPD, solar PV SPD, signal SPD, telecom SPD, and surge protection solutions for industrial, commercial, renewable energy, and infrastructure applications.
GET A QUOTE
With over ten years of experience in lightning protection, Cresin can provide you with a complete surge protection solution and highly praised technical support services.
Email: evagu@cresinspd.com
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Cresin focuses on sharing technical resources related to surge protection devices, including SPD selection and calculation, lightning protection grading design, technical specifications of AC/DC lightning protection products, lightning protection solutions for the new energy industry, product certification knowledge, and key points for electrical distribution lightning protection installation.
2026-04-03
2026-04-03
2026-04-03
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Address: No. 978 Tianchen Road, High-tech Zone, Jinan, Shandong,China
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The product range includes production technologies for smart capacitors, digital display meters, surge protectors, dedicated backup protection devices for surge protectors, self-resetting over/under-voltage protectors, control and protection switches, and automatic transfer switches for dual power supplies.
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