
Intelligent Fiber Optic Fusion Splicers

Send Us A Message To Tell Us Which Splicer Model (NK4S or NK3S) You Need.
We Will Provide The Professional Factory Quote And Detailed Technical Specification.
Alternatively, you can contact us via WhatsApp or email.
Whatsapp:+86 15084848683 info@ztocable.comTechnical Comparison: NK Series Fusion Splicers
| Specification | NK4S (Trunk-Level Master) | NK3S (All-Rounder FTTH) |
|---|---|---|
| Core Technology | Core-to-Core Alignment (6 Motors) | Cladding Alignment (4 Motors) |
| Primary Application | Backbone, MAN, Long-haul Projects | FTTH Drop Cable, Short-haul, FTTx |
| Splicing Loss (SM) | Ultra-low (0.02 dB) | Low (0.02 dB) |
| Splicing Speed | 7 Seconds (Standard) | 6-8 Seconds (Typical) |
| Heating Time | 18 Seconds | ≤18 Seconds |
| Battery Capacity | 5200 mAh (340+ Splice/Heat Cycles) | 5200 mAh (340+ Splice/Heat Cycles) |
| Storage Capacity | 10,000 Records / 1,600 Images | 10,000 Records / 1,600 Images |
| Display | 4.3″ HD Touchscreen | 4.3″ HD Touchscreen |
| Altitude Capability | 0 – 5000 meters | 0 – 5000 meters |
| Dimensions (mm) | 136 x 139 x 132 (Compact) | 208 x 141 x 104 (Portable) |
* Selection Guide: Choose the NK4S for high-standard trunk networking where Core-to-Core alignment minimizes signal loss significantly. Choose the NK3S for FTTH and last-mile connectivity, balancing cost-effectiveness with four-motor precision and rugged mobility.
FAQ: Fiber Optic Fusion Splicers
Which fusion splicer model should I choose, NK4S or NK3S?
If you work on backbone or trunk networks requiring extremely low splicing loss, the NK4S (Core-to-Core alignment) is the best choice. For FTTH, drop cables, or short-distance projects where portability and speed are key, the NK3S is highly recommended.
Does the machine support multiple languages?
Yes, both models feature a multi-language interface suitable for international engineers. The intuitive GUI makes operation simple regardless of language.
How many splices can I perform on a single battery charge?
Our high-capacity 5200 mAh lithium battery typically supports over 340 cycles of splicing and heating on a full charge, ensuring a full day of field work without power anxiety.
What is included in the package?
The standard package includes the main fusion splicer unit, fiber cleaver, multi-function stripper, spare electrodes, cooling tray, carrying case, and battery. Contact us for a detailed packing list.
What is the electrode lifespan?
The high-quality electrodes are rated for over 5,000 discharges. They are easy to replace, and the machine will prompt you when maintenance is needed.
Do you offer technical support and warranty?
Yes, as a leading manufacturer, we strictly test every unit. We provide a comprehensive warranty and remote technical support to assist you with any operational questions or calibration needs.

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20 Years Of Manufacturing Experience

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Land Area: 86,000 m²Building Area: 40,000 m²

1 Million Kilometers Of International Optical Cable Service Experience

An Company Integrating Production, R&D, Sales And Export

1-288 Core OPGW, ADSS, Air Blown, Armored, Aerial, Underground, Drop Fiber Optic Cable Supplier

Outdoor Production Lines: 16 LinesFTTH DROP Production Lines: 18 Lines





We support OEM and use sturdy and durable moisture-proof wooden barrels to protect your optical cable during transportation.

Each roll of optical cable is 100% IEC tested and meets ISO quality standards.

ZTO optical cables have been exported to more than 200 countries and have rich market experience.

ZTO fiber optic cable factory can produce layer twisted steel wire armored fiber optical cables, 288 core OPGW fiber optical cables, and ADSS 1500m span.

We have high manufacturing efficiency and can deliver hot selling products and 1000KM drop fiber optic cables within 3 days, while 200KM outdoor fiber optic cables can be delivered within 7 days.

We are located in the Hainan region of China and have very good local tax policies, which can provide our customers with prices 10% lower than the market.

In the production process, we use fiber cores from top global brands such as Corning and Fujikura.

We can provide door-to-door delivery and technical guidance services, and guarantee a 30 year service life for optical cables.

We can provide you with free samples, and if you are satisfied, we can cooperate again.

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