UBL250 25.0mm² Uninsulated Bootlace Ferrule 18mm — Pack of 25

Description

UBL250. 25.0mm². Uninsulated Bootlace Ferrule. 18mm Pin. Tin Plated Copper. DIN 46228/4. Pack of 25.

The UBL250 is a 25.0mm² uninsulated bootlace ferrule — used to terminate 25.0mm² stranded conductors into screw terminals, busbar connections, and terminal blocks, providing a clean, solid crimped pin that prevents wire splaying and strand damage under screw pressure. 18mm pin length. Tin plated copper tube. No insulation collar — suited to applications requiring a bare metal termination. Conforms to DIN 46228/4. Pack of 25.

• UBL250 — 25.0mm² Uninsulated Bootlace Ferrule, 18mm Pin
• Wire range: 25.0mm² (4 AWG)
• Pin length (L): 18mm
• Outer diameter (D): 7.9mm
• Inner diameter (C): 7.5mm
• Opening (W): 9.2mm
• Material: Copper tube — tin plated
• Uninsulated — no insulation collar, bare metal termination
• Operating temperature: -40°C to +105°C
• Standard: DIN 46228/4
• Applied with hydraulic or heavy-duty ratchet crimping tool — 25.0mm² die required
• Pack of 25

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About Uninsulated Bootlace Ferrules

An uninsulated bootlace ferrule (also called a bare wire end ferrule or pin terminal) is a tin plated copper sleeve crimped onto the end of a stranded conductor to consolidate the strands into a solid pin — preventing individual strands from splaying, breaking under screw torque, or cold-flowing over time. Unlike insulated ferrules, uninsulated ferrules have no nylon collar — providing a low-profile, all-metal termination suited to applications where insulation at the terminal entry is not required or where the terminal block provides its own insulation.

The UBL250 is the 18mm pin length variant of the 25.0mm² uninsulated ferrule — suited to screw terminals, busbars, and power distribution connections in switchboard, solar, industrial, and heavy electrical wiring. A longer 22mm pin length version is available as the UBL250L. Conforms to DIN 46228/4. Supplied by Pacific Components.

Q: What wire size does the UBL250 suit?
A: The UBL250 suits 25.0mm² stranded conductors (4 AWG).

Q: What is the pin length of the UBL250?
A: The UBL250 has an 18mm pin length. A longer 22mm version is available as the UBL250L.

Q: What is the difference between insulated and uninsulated ferrules?
A: Insulated ferrules (BL range) have a nylon collar over the barrel — providing insulation at the terminal entry point. Uninsulated ferrules (UBL range) have no collar — providing a bare metal termination. Select based on the terminal block type and installation requirement.

Q: What crimping tool is required for the UBL250?
A: A hydraulic or heavy-duty ratchet crimping tool with a 25.0mm² die is required for correct crimping of the UBL250.

Q: How many ferrules are in a pack?
A: The UBL250 is sold in a pack of 25 ferrules.