One tool. Five essential functions. The Swift KF4A is a compact all-in-one active cladding alignment fusion splicer for FTTx and broadband work, performing stripping, cleaning, cleaving, splicing, and sleeving in a single unit. One machine on the bench instead of five stations means less gear to haul, fewer handling steps that introduce error, and consistent results on every splice - the thermal stripper alone eliminates the fiber scratching that hand stripping risks.

Paired with Swift splice-on connectors (SOC), the KF4A replaces mechanical connectors with fused terminations - better quality, better durability, and lower long-term maintenance cost. Field durability is engineered in: shock tested with 76cm drops from five sides, IPx2 water resistance, and IP5x dust protection keep it splicing in real conditions.

• 5-in-1: stripping, cleaning, cleaving, splicing, and sleeve protection
• IPAAS active clad-to-clad alignment for precision splices
• Thermal stripping prevents fiber scratches
• Compatible with industry-standard Fusion Splice-On Connectors (SOC)
• Shock (76cm, 5-sided drop test), dust (IP5x), and water (IPx2) resistant
• Compact footprint for tight workspaces and aerial buckets

• Alignment: IPAAS active clad-to-clad
• Applicable Fibers: 0.25mm, 0.9mm, 2.0mm, 3.0mm indoor cable (single fiber)
• Cladding Diameter: 125µm; Coating: 150µm - 3mm
• Cleaved Length: 0.20 - 0.63"
• Modes: 300 splice / 100 heat
• Typical Splice Loss: SM 0.02dB, MM 0.01dB, DS 0.04dB, NZDS 0.04dB
• Return Loss: > 60dB
• Splicing Time: ~7 sec (SM); Sleeve Heating: ~13 sec (IS-60)
• Sleeves: 2.4", 1.5", and micro
• Storage: Up to 5,000 splice results + 5,000 images
• Tension Test: 1.96 - 2.25N
• Operating Range: -14°F to 122°F, 0-95% humidity, 0-5,000m altitude
• Display: Dual CMOS cameras, 4.3" color LCD; magnification 110x (max 220x)
• Power: Li-ion battery (14.8V, 3400mAh) + 100-240V AC charger; ~200 splice cycles/charge
• Electrode Life: ~21,000 splices; Blade Life: ~75,000 cuts
• Dimensions: 132W x 212L x 73H mm (without protector); Weight: 1.5kg with battery
• Connectivity: USB

• Swift KF4A arc fusion splicer
• KF-3400 battery + adapter
• HC-11 hard transport case
• Spare electrode (EI-24)
• Optical fiber holder
• CT-01 cooling tray (1.5")
• Allen wrench (LD-3300), USB cable, tweezers, tool box
• Hard and soft brushes; instruction manual

Note: The KF4A does not ship with fiber holders. After placing your order, call 877-208-6657 to select one: HS-250, HS-900, HS-2.5, HS-IN, KF4-SC/FC, KF4-ST, KF4-ILC, LS-900.

Also see the KF4AV, which adds a built-in VFL and InGaAs power meter, and the HS-250 250µm fiber holder pair.