The Furse ESP 415 surge protective device series delivers combined Type 1, 2, and 3 transient overvoltage protection for 400V three-phase electrical mains, routing high-energy lightning currents safely to earth while safeguarding sensitive electronics. Beijing Zhongping Technology supports industrial facilities by supplying these robust components to maintain system uptime and compliance with structural lightning protection standards.
Industrial power distribution networks frequently encounter transient overvoltages induced by direct lightning strikes, utility switching, and heavy inductive load operations. These voltage spikes can compromise solid-state controllers, industrial computers, and automation hardware, leading to unexpected operational downtime and costly component replacements. The Furse ESP 415 series addresses this vulnerability by combining high-capacity spark gap and varistor technologies within a single enclosure. This integration handles heavy 10/350 microsecond waveform impulse currents associated with external lightning protection systems while clamping residual voltages to levels safe for downstream equipment. Variants such as the ESP415T1/25/TNS and ESP415T1/12.5/TNS provide tailored discharge capacities for varying risk profiles, ensuring that electrical installations meet the strict requirements of BS EN 62305 and IEC 61643 series.
Technical Specifications
Nominal Operating Voltage: 400 VAC @ 50 Hz - 60 Hz
System Configuration: 3-Phase + Neutral + Earth (TN-S)
Max Continuous Operating Voltage (MCOV Uc): 350 VAC @ L-N
Impulse Discharge Current (Iimp): 12.5 kA per phase @ 10/350 microseconds (T1/12.5 variant)
Impulse Discharge Current (Iimp): 25.0 kA per phase @ 10/350 microseconds (T1/25 variant)
Nominal Discharge Current (In): 50.0 kA @ 8/20 microseconds
Maximum Discharge Current (Imax): 100.0 kA @ 8/20 microseconds
Voltage Protection Level (Up): < 600 V @ L-N
Response Time: < 25 ns @ L-N
Short Circuit Current Rating (Icc): 50.0 kA RMS
Operating Temperature Range: - 40°C - + 80°C
Enclosure Protection Rating: IP20
Status Indication: Visual LED and volt-free contact for remote monitoring
System Integration and Hardware Setup
Deploying the Furse ESP 415 surge protective device requires careful attention to physical mounting and cabling geometry to minimize inductive voltage drops during high-current transient events. Installers must mount the unit as close as possible to the incoming supply distribution board or service entrance, utilizing short, straight conductor lengths not exceeding 25 cm where feasible. Loop lengths in connecting wires introduce parasitic inductance that increases the effective clamping voltage experienced by protected terminal equipment.
The device accommodates standard distribution wiring through robust tunnel terminals, allowing secure connection for phase, neutral, and protective earth conductors. For optimal noise immunity and transient shunting, the protective earth terminal of the SPD must link directly to the main earthing bar with low impedance. Integration into facility management systems is facilitated through integrated volt-free dry contacts, which signal internal thermal disconnect status or component degradation to external Programmable Logic Controllers or building management monitoring loops. Visual status flags on the front face provide immediate local verification of operational readiness, allowing maintenance personnel to perform rapid visual inspections without opening enclosure panels.
Reliability and Environmental Durability
Industrial deployment environments demand robust thermal and mechanical resilience from electrical protection hardware. The Furse ESP 415 series incorporates internal thermal disconnection mechanisms designed to safely decouple degraded varistor components from the active circuit in the event of sustained overvoltages or end-of-life conditions, preventing thermal runaway or fire hazards. The ruggedized internal architecture withstands high continuous operating temperatures up to 80°C, making it suitable for dense electrical cabinets and outdoor distribution pillars equipped with passive or active climate control.
The IP20 rated housing protects internal discharge elements against accidental finger contact during maintenance while requiring installation within a suitably rated electrical enclosure for harsh, dusty, or moisture-prone industrial settings. Advanced internal coordination ensures that aging components fail safely while maintaining continuity of the protective path where possible or signaling failure via remote telemetry. These design attributes contribute to an extended operational lifespan, reducing the frequency of maintenance interventions and ensuring continuous compliance with industrial safety mandates across heavy manufacturing and utility sectors.
Selection Guidance and Alternative Options
Choosing the appropriate surge protective device variant within the ESP 415 lineup depends on the lightning protection zone classification and the calculated risk assessment of the facility as outlined in BS EN 62305. Facilities equipped with external lightning protection systems (LPS Class I or II) typically require high-capacity models such as the ESP415T1/25/TNS to handle substantial direct strike energy fractions. For standard industrial buildings with lower exposure levels, the ESP415T1/12.5/TNS or standard D1/M1/M2/M4 variants provide balanced protection across secondary distribution boards. Beijing Zhongping Technology provides expert technical support and local inventory availability to assist engineers with cross-referencing, system compatibility checks, and selection of alternative configurations tailored to specific electrical architectures.
Frequently Asked Questions (FAQ)
1. What is the primary function of the Furse ESP 415 series in a three-phase power network?
The series provides combined Type 1, 2, and 3 surge protection, safely diverting high-energy transient currents from direct lightning strikes and switching operations to earth while limiting residual voltage for downstream equipment.
2. Which wiring configurations are supported by these surge protective devices?
The units are engineered for compatibility with standard three-phase electrical distribution systems, including TN-S, TN-C-S, and TT configurations depending on the specific model variant.
3. How does the device indicate an internal fault or end-of-life status?
Each unit features local visual status indicators alongside integrated volt-free remote contacts that can interface with external alarm systems or PLCs to signal thermal disconnection.
4. What is the significance of the 10/350 waveform reference in these specifications?
The 10/350 microsecond waveform simulates the severe energy profile of a direct lightning strike, which Type 1 protective devices are specifically tested and rated to withstand.
5. Can these SPDs be installed downstream from the main service entrance?
While primarily designed for installation at the main service entrance or primary distribution board (LPZ 0 to LPZ 1 boundary), their combined Type 1+2+3 capability allows them to protect sensitive loads over single enclosure footprints.
6. What lead length limitations apply during physical installation?
Connecting conductors should be kept as short and straight as possible, ideally under 25 cm, to minimize parasitic inductive voltage drops that can increase the effective protection level.
7. What purchasing support does Beijing Zhongping Technology offer for this product family?
Beijing Zhongping Technology supplies original manufacturer units from regional stock, offering technical consultation, model cross-referencing, and logistics coordination for industrial clients.
8. What warranty coverage applies to the Furse ESP 415 series?
The product is backed by standard manufacturer warranty terms covering material defects and performance reliability under specified operating conditions.
FAQ
1.Who are We?
Beijing Zhongping Technology Co., LTD., is a global industrial electrical automation service provider, is a scientific research, design, marketing, technical services, industrial Internet, international import and export services as one of the science and technology companies.
2.What can you buy from us?
PLC, inverter, human-machine interface, hydraulic products, low-voltage power distribution, industrial robots and core components
3.Is the item in stock or need to be purchased from another supplier?
We have a large inventory of goods and have our own warehouse.
4.What advantages do we have over other suppliers?
Our company has a large amount of inventory and a number of warehouses, but also in the country's important industrial provinces and cities with offices and a number of overseas service points. To provide you with intelligent manufacturing one-stop comprehensive services, save efforts, labor and cost.
5.Can you provide 100% new original authentic products?
We only sell new original genuine, no renovation, no fake, only for the original factory original!
6.How long is the delivery time?
If there is a stock, it will take 2-3 working days to ship, if the quantity is large, it will take 5-7 working days after receiving the payment, if it is not a conventional model, it will take some time, we will inform you of the specific delivery time.
7.Is there technical support available?
Of course, we have a professional technical team that can help you solve technical problems.
8.How do we guarantee quality?
We have three processes to control the quality of goods.
1) Our engineers will inspect the production and quality control in the factory regularly.
2) Incoming materials shall be inspected by experienced purchasing engineers before they can be stored.
3) At least 2 people in the logistics department cross-check the goods to be sent before delivery.
9.Can you guarantee the safe and reliable delivery of your products?
Yes, we strictly adopt the international standard packing. We also use special packaging for dangerous goods, and refrigerated shipping for items with temperature requirements. Special item packaging and general cargo standard packaging requirements may incur additional costs.
10.How about the freight?
The cost depends on how you choose to get the goods. Express is usually the fastest but also the most expensive way. Sea freight is the best solution for large quantities of goods. The exact shipping cost depends on the purchase amount、quantity and weight of your order. Please feel free to contact us for more information.
+86 010-64225983
+8613811814778
Building 26, Liyuan Community, Chaoyang District, Beijing, China
