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Transparent box holding 180 coloured wire connectors in grey blue orange yellow red

Wire Cap Connectors 180 PCS

SKU CH-E1BF-MSP3C

180 twist-on wire connectors in five colour-coded sizes with internal springs, rated 600 V and 105 °C for secure electrical joints

  • ColorBlack
  • Durable nylon shells rated to 105 °C for safe insulation
  • Internal metal springs ensure stable connections that resist loosening
  • Colour-coded caps simplify size identification across five specifications
  • 180-piece assortment covers common wiring tasks in one box
  • Transparent partitioned case keeps connectors organised and portable

Electrical wire connector kit

This 180-piece assortment supplies twist-on wire caps for residential and light-commercial wiring. Five colour-coded sizes cover the most common conductor combinations, and the transparent partitioned box keeps each size separate for quick selection. The kit suits electricians, maintenance technicians and competent DIYers who need a ready range of insulated connectors.

Installation and common issues

Each connector uses an internal metal spring that bites the stripped conductors when twisted, so no special tools are required beyond a wire stripper. The nylon shell resists cracking during tightening, but over-twisting can damage fine strands. Ensure the stripped length matches the connector depth and verify that no bare copper remains exposed after the cap is seated.

Capacity and headroom

The connectors are rated for 600 V maximum and 105 °C (221 °F) continuous temperature. The assortment provides 50 grey, 50 blue, 50 orange, 18 yellow and 12 red caps, giving ample quantity for typical branch-circuit work. Very large conductor counts or high-vibration environments may demand specialised connectors not included in this set.

Highlights

  • Durable nylon shells rated to 105 °C for safe insulation
  • Internal metal springs ensure stable connections that resist loosening
  • Colour-coded caps simplify size identification across five specifications
  • 180-piece assortment covers common wiring tasks in one box
  • Transparent partitioned case keeps connectors organised and portable

Specifications

ColorBlack

Questions about this item

How can I confirm the wire caps are making a secure connection after twisting them onto the wires?

A firm twist seats the internal metal spring tightly around the conductors; tug each wire gently — if none pulls free, the connection is stable and the nylon shell remains intact up to 105 °C.

What exactly is included in the 180-piece assortment and do I need any extra tools?

The box holds 50 grey, 50 blue, 50 orange, 18 yellow and 12 red caps in a partitioned storage case; only a wire stripper and your hands are required for installation.

Which colour cap should I choose for a specific wire gauge or circuit?

Each colour corresponds to a different size — grey, blue, orange, yellow and red — so match the cap to the wire combination you are joining; the case labels help you pick the right one quickly.

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