BBC45 Partex Butt Connectors, I/D 4.5mm, Blue, pack 100

Why Choose the Partex BBC45 Blue Insulated Butt Connectors?

The Partex BBC45 is a high-quality blue pre-insulated butt crimp connector designed for joining two stranded copper conductors securely in a straight-line electrical connection. Supplied in a convenient pack of 100, these connectors are ideal for electrical contractors, industrial panel builders, maintenance engineers and OEM equipment manufacturers.

Designed for conductor sizes of 1.5–2.5 mm² (16–14 AWG), the Partex BBC45 features a conductive C1100 copper barrel surrounded by durable blue PVC insulation. This construction allows installers to create a reliable electrical splice without soldering, provided the correct crimping tool and installation method are used.

The BBC45 has a 4.5 mm insulation diameter, a 2.3 mm internal copper barrel diameter and an overall length of 25 mm. These dimensions make it a compact and practical solution for joining compatible wires inside electrical enclosures, machinery and control cabinets.

The blue insulation identifies the standard 1.5–2.5 mm² conductor range, helping technicians select the appropriate connector and crimping die. With 100 connectors per pack, the Partex BBC45 is particularly suitable for repetitive cable assembly, electrical repairs and workshop stock.

Key Advantages

• Secure inline wire joining connects two suitable copper conductors end to end.
• Blue colour-coded insulation identifies the 1.5–2.5 mm² conductor range.
• Suitable for 16–14 AWG cables in compatible electrical installations.
• C1100 copper barrel provides an effective conductive connection.
• High-grade PVC insulation helps protect the completed termination.
• Crimp connection technology eliminates the need for soldering.
• Compact 25 mm overall length suits space-conscious electrical assemblies.
• 4.5 mm insulated body diameter provides a compact, colour-coded connector profile.
• Suitable for industrial and commercial wiring when installed within its ratings.
• Pack of 100 supports repeated installations and maintenance work.
• Compatible with suitable insulated terminal crimp tools for professional results.
• Practical for electrical repairs, cable extensions and control panel assembly.

Key Features

• Partex BBC45 insulated butt connector.
• Manufacturer part number: BBC45.
• Terminal type: Inline butt splice connector.
• Insulation colour: Blue.
• Conductor size: 1.5–2.5 mm².
• Equivalent conductor range: 16–14 AWG.
• Insulation diameter: 4.5 mm.
• Internal metal barrel diameter: 2.3 mm.
• Overall connector length: 25 mm.
• Metal barrel thickness: 0.8 mm.
• Terminal material: C1100 copper.
• Insulation material: PVC.
• Crimp-on connection for permanent wire splicing.
• Fully insulated external sleeve.
• Suitable for multi-stranded copper conductors.
• Manufacturer-stated maximum voltage: 600 V.
• Manufacturer-stated temperature range: -20 °C to +75 °C.
• Pack quantity: 100 connectors.

How the Partex BBC45 Creates a Secure Inline Cable Connection

The Partex BBC45 is designed to join two suitable stranded copper conductors in a straight-line arrangement. Each stripped conductor end is inserted into an opposite end of the connector's copper barrel. The barrel is then compressed using an appropriate crimping tool to form a secure mechanical and electrical connection.

The C1100 copper barrel provides the conductive path between the two wires. Correct crimping compresses the barrel around the conductor strands, helping maintain electrical continuity and resist conductor movement during normal service.

The surrounding blue PVC insulation covers the connection area and identifies the correct conductor size category. The BBC45 is intended for 1.5–2.5 mm² stranded copper conductors. Using wires outside this range, or selecting the wrong crimping die, can result in an unreliable joint.

For installation, both conductors should be stripped to the appropriate length without damaging their strands. Each wire should be inserted fully into its respective end of the connector and crimped using a suitable tool designed for blue pre-insulated terminals. The finished splice should be inspected and checked for secure conductor retention.

The 4.5 mm dimension refers to the diameter of the insulated connector body in the manufacturer's dimensional specification. The internal copper barrel diameter is 2.3 mm. These dimensions are important when checking clearance, conductor compatibility and installation space.

The BBC45 uses standard PVC insulation rather than adhesive-lined heat-shrink insulation. Where a moisture-resistant or sealed cable joint is required, a suitable heat-shrink butt connector or another appropriately rated connection system should be selected.

Typical Applications

• Industrial electrical control panel wiring.
• Joining stranded copper conductors in electrical enclosures.
• Electrical cable repairs and extensions.
• Machinery and equipment wiring.
• OEM cable harness manufacturing.
• Industrial automation control circuits.
• Commercial electrical installations.
• Electrical maintenance and servicing.
• Instrumentation and auxiliary control wiring.
• Workshop cable preparation and assembly.
• Building services electrical systems.
• Professional electrical contracting and panel building.