SC Hot-Melt Connectors KW-04 — SC/APC & SC/UPC Splice-On

Splice-on SC connectors: fusion-welded in the splicer for a true fused joint, in a 58 mm type and a 0.9 mm type, APC and UPC.

A real fusion joint, not a mechanical one — the connector's stub is welded to the field fiber in a standard splicer
Two builds: the 58 mm type for drop and round cable, and the 0.9 mm type for tight-buffered fiber
SC/APC (green) and SC/UPC (blue), factory-polished ferrules
Heat-shrink protection sleeve included — the splice is sealed inside the connector tail
Insertion loss typical ≤0.3 dB after fusion; return loss ≥55 dB UPC and ≥60 dB APC

Ask for Pricing WhatsApp KW-04 Datasheet (PDF)

Checked before it ships

Checked against the specifications on this page before dispatch; splicer consumables are batch-checked.

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Your brand on it

Supplied neutral; labeling per order.

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Stock & small lots

Consumables and connectors are restock lines — combine them with tool orders in one shipment.

Specifications

KW-04 full specification

Connector type	SC hot-melt (splice-on) connector, fusion terminated
Variants	SC/APC (green) · SC/UPC (blue)
Versions	58 mm type for drop / round cable · 0.9 mm type for tight-buffered fiber
Fiber	Single-mode G.652D / G.657A
Applicable cable	Flat drop 2×3.0 mm; round Ø2.0 / Ø3.0 mm; 0.9 mm tight-buffered, by version
Ferrule	Zirconia ceramic, 2.5 mm
Insertion loss	Typical ≤0.3 dB after fusion (1310 / 1550 nm)
Return loss	UPC ≥55 dB · APC ≥60 dB
Operating temperature	-40°C to +75°C
Termination	Fusion splicer + heat-shrink sleeve (included)

KW-04 hot-melt connector ×1 (polish and version as ordered)Heat-shrink protection sleeve ×1

In the box: the parts above, packed per unit. Applications: Splice-on SC terminations where a splicer is already on site · Repair cords and closure pigtails made to length · Crews standardising on fused joints for premium installs.

How It Works — when the job wants a weld, not a clamp

Hot-melt (splice-on) connectors take the opposite bet from fast connectors: instead of a mechanical V-groove joint, the field fiber is fusion-spliced to the connector's factory stub, and the heat-shrink sleeve seals the weld inside the housing. Any core-alignment splicer does it, and the result is optically a factory cord — with the length made on site.

Choose the 58 mm KW-04 for drop and round cable terminations, and the slim 0.9 mm type for pigtail-style work inside closures and panels. If no splicer is on the truck, the mechanical KW-01 is the same SC interface without the weld.

Keep looking

Ask about the KW-04

Tell us the quantity and the finish or branding you need — Silvia replies personally with factory pricing (EXW).

Email: silvia@licoom.com · sales@licoom.com
WhatsApp: +86 150 6823 2998

SC Hot-Melt Connectors KW-04 — SC/APC & SC/UPC Splice-On

Checked before it ships

Your brand on it

Stock & small lots

KW-04 full specification

How It Works — when the job wants a weld, not a clamp

Related products

SC Fast Connectors KW-01 — SC/APC & SC/UPC Field Assembly

LC Hot-Melt Connectors KW-05 — LC/APC & LC/UPC Splice-On 0.9 mm

Fusion Splicer SD-9

Ask about the KW-04