LAPP ÖLFLEX® UNIPLUS 1X25 BU – 4521021U100 is a 25 sq. mm single-core electrical cable designed for reliable fixed electrical installations, control cabinets, switchgear and distribution applications. It features a fine-wire stranded bare copper conductor, PVC insulation and blue (BU) colour identification.
The exact LAPP article 4521021U100 is listed as a 25 mm² blue single-core cable supplied in a ring. LAPP identifies the ÖLFLEX® UNIPLUS range for wiring of devices, switchgear cabinets and distribution boxes, as well as protected installations and closed installation ducts.
The 4521021U100 uses a single-core 25 sq. mm bare copper conductor with fine-wire stranded construction. LAPP specifies the conductor as IEC 60228 Class 5 fine-wire, providing practical flexibility for installation. The cable has PVC insulation and a blue single-colour identification.
The blue BU colour makes the cable easy to identify within organized electrical wiring systems, particularly in control cabinets and industrial installations.
The ÖLFLEX® UNIPLUS range is specified for a 1.1 kV AC nominal voltage and 3 kV test voltage according to the applicable Indian standard. Current-carrying capacity should be selected according to the actual installation method, ambient conditions and applicable electrical requirements.
The 25 sq. mm conductor provides a larger cross-sectional area for electrical wiring applications requiring a substantial single-core conductor.
ÖLFLEX® UNIPLUS is a flame-retardant cable range. LAPP specifies flame retardance according to IEC 60332-1 and IS 10810-53, helping reduce the risk of flame propagation in suitable electrical installations.
Note: This is an FR cable, not an FRLS-specific variant. Therefore, it should not be marketed as a low-smoke cable.
LAPP ÖLFLEX® UNIPLUS 1X25 BU combines a 25 sq. mm copper conductor, PVC insulation and flame-retardant characteristics in a practical single-core format. Its fine-wire construction offers installation flexibility, while the blue colour provides clear conductor identification.
The 100 m ring packaging also makes this variant convenient for electrical installation projects and panel-wiring requirements.
LAPP ÖLFLEX® UNIPLUS 1X25 BU can be used for:
LAPP specifically lists wiring of devices, switchgear cabinets and distribution boxes among the applications of the ÖLFLEX® UNIPLUS range.
The 4521021U100 is intended for fixed installation and can also be used in suitable flexible wiring applications. LAPP specifies a minimum bending radius of 6 × outer diameter for fixed installation. The cable should be routed and terminated using suitable installation practices without damaging the PVC insulation.
| Specification | Details |
|---|---|
| Brand | LAPP |
| Product Series | ÖLFLEX® UNIPLUS |
| Product Name | ÖLFLEX® UNIPLUS 1X25 BU |
| Article Number | 4521021U100 |
| Cable Type | Single Core Cable |
| Number of Cores | 1 Core |
| Conductor Size | 25 sq. mm |
| Conductor Material | Bare Copper |
| Conductor Construction | IEC 60228 Class 5, Fine-Wire |
| Insulation Material | PVC |
| Cable Colour | Blue |
| Colour Code | BU |
| Rated Voltage | 1.1 kV AC |
| Test Voltage | 3 kV |
| Flame Retardant | Yes |
| Flame Retardance | IEC 60332-1 / IS 10810-53 |
| Installation Type | Fixed Installation |
| Minimum Bending Radius | 6 × Outer Diameter |
| Packaging | Ring |
| Cable Length | 100 m |
| Copper Index | 240 kg/km |
| Unit | Meter |
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