FiberFox Mini 4S+ Active Alignment Fusion Splicer

Compact 1.8 kg active alignment fusion splicer with DAA core tracking, 6 second splice time, and 350 cycle battery life.
  • DAA Digitalized Active Alignment System
  • Active Cladding Alignment for consistent field splicing
  • 6 second splice time with 10 second heating
  • 350 cycles per charge (splicing + heating)
  • 1.8 kg including battery
  • Dustproof, waterproof and anti-shock design
  • Dual CCD camera with LED injection
  • 4.3″ touch screen with tempered glass interface
  • Stores 10,000 splice records and 2,000 images

Engineered to Outperform

Delivered with Certainty

Procurement Made Simple

Rapid Deployment Ready

Ready To Scale

Compliance Assured

The FiberFox Mini 4S+ is a compact, field-ready active alignment fusion splicer designed for reliable single-fibre termination. Using DAA (Digitalized Active Alignment) technology, it delivers more precise positioning than competing core-alignment splicers, with typical losses around 0.02 dB.

Weighing 1.4 kg (with battery 1.8 kg), the Mini 4S+ offers a balance of performance and durability. It achieves splice times as fast as 6 seconds and heating cycles of about 10 seconds, with up to 350 splicing + heating cycles per charge. The system includes a 4.3″ touch screen interface and dual CCD camera for fibre observation and alignment.

Designed for demanding environments, it is dustproof, waterproof, and anti-shock. The Mini 4S+ supports a broad fibre range including single mode (G.652 & G.657), multi mode (G.651), dispersion shifted (G.653), and non-zero dispersion shifted (G.655), ensuring compatibility across modern network applications.

Technical Specifications
Splicing MethodActive Alignment (DAA Digitalized Active Alignment System)
Typical LossSM 0.02 dB / MM 0.02 dB / DS 0.05 dB / NZDS 0.05 dB
Return Loss> 60 dB
Splice TimeQuick Mode 6 seconds / SM Mode 8 seconds
Heating TimeAverage 10 seconds
Heating Modes36 modes (pre-set 4 / user set-up 32)
Applicable Sleeve20 – 60 mm
Fibre TypesSM (G.652 & G.657), MM (G.651), DS (G.653), NZDS (G.655)
Cladding Diameter80 – 150 µm
Coating Diameter100 – 3000 µm
Cleaved Length< 250 µm coating 5–16 mm / > 250 µm coating 8–16 mm
Electrode Life> 5,500 arcs
Display4.3″ colour LCD with tempered glass touch interface
MagnificationX and Y dual image 320× / X or Y single image 320×
Data StorageSplice records 10,000 / Images 2,000
BatteryLi-ion 11.1 V 5000 mAh, 350 splicing + heating cycles
Power SupplyAC 100–240 V input or DC 12 V 1.8 A external input
ConnectivityUSB
Dimensions (W×D×H)124 × 123.2 × 138 mm
Weight1.4 kg (without battery) / 1.8 kg (with battery)
Environmental Performance
Operating Temperature–10 °C to +50 °C
Relative Humidity0 – 95 %
Operating Altitude0 – 5000 m
Wind Resistance15 m/s (max)
Storage Temperature–40 °C to +80 °C / 0–95 % RH
Included Accessories
Standard PackageMini 4S+ Splicer, Mini 50GB+ Cleaver, Cleaver soft case, Power cord, Car cigar cable, AC adapter, SOC heater block, SOC holder, Cooling tray, Spare electrodes, Battery pack, USB cable, User manual CD, Shoulder strap, and Hard carrying case
FiberFox Mini 4S+ Variants
FOX-4S+-KITFiberFox Mini 4S+ Standard Package (Splicer + Cleaver + Accessories)