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Yellow twist-on wire connector with winged vinyl body, new condition

3M

3M H-33-POUCH Twist-On Wire Connector Yellow 12 AWG

SKU CH-V5ZY-B4ET4

Twist-on connector joins up to seven copper wires from 18 to 12 AWG, rated 600 V and 221 °F with vinyl-insulated steel contacts

  • TypeElectrical Connectors
  • Connects up to 7 conductors for versatile wiring
  • Wing-style design enables fast hand-twist installation
  • CSA certified and UL listed for code compliance
  • Vinyl insulation rated to 221 °F and 600 V
  • Yellow colour coding identifies 12 AWG maximum wire size

3M H-33 Yellow Wire Connector

The 3M H-33-POUCH is a twist-on wire connector designed for copper conductors in electrical wiring projects. Its vinyl insulation and winged style provide a secure grip for professional electricians and DIY installers making splice connections. The connector is UL Listed and CSA Certified for use up to 600 volts.

Replaces loose tape or crimp splices

This connector upgrades basic taping methods by enclosing the joint in a flame-retardant vinyl shell rated for 221 degrees F. The jump is worth it when a code-compliant, vibration-resistant connection is required for solid or stranded copper wire combinations. It accepts a maximum of seven conductors within the specified range.

Suits residential and light commercial wiring

Installers joining 18 to 12 AWG solid or stranded copper wires will find the yellow colour code matches the 12 AWG maximum single wire size. Buyers needing connections for aluminum conductors or wire gauges larger than 12 AWG should look at a different connector style rated for those materials and sizes.

Highlights

  • Connects up to 7 conductors for versatile wiring
  • Wing-style design enables fast hand-twist installation
  • CSA certified and UL listed for code compliance
  • Vinyl insulation rated to 221 °F and 600 V
  • Yellow colour coding identifies 12 AWG maximum wire size

Specifications

Brand3M
TypeElectrical Connectors

Questions about this item

What wire sizes fit inside the 0.55 in wide yellow connector?

It accepts copper conductors from 18 AWG up to 12 AWG for a single wire, and combinations ranging from four 22 AWG wires up to two 14 AWG with two 18 AWG, with a maximum of seven conductors total.

How do I install the wing-style twist-on connector without loose strands?

Strip each copper wire to the recommended length, align the stripped ends evenly, push them into the vinyl-insulated steel contact, then twist the yellow wing clockwise until the connection feels firm and no bare wire shows.

When should I replace the connector after it reaches 221 Degrees F in service?

The vinyl insulation and steel contact are rated for continuous operation at 221 Degrees F and 600 V; replace the connector if the insulation cracks, discolours, or the spring grip feels loose after thermal cycling.

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