Get a stronger
splice in less time.
Get a stronger
splice in less time.
3M wire connectors are engineered to help professionals make fast, consistent, and secure joins between conductors. From everyday twist-on caps to specialty insulation displacement connectors, these solutions are built for clean mechanical bonds, strong electrical continuity, and long-term hold even in tough conditions. Whether you are splicing stranded wires in a junction box or making quick tap-ins for lighting, 3M connectors are trusted to stay in place and carry the load.
Summit Electric Supply carries a wide range of 3M wire connectors designed for the work contractors and maintenance teams do every day. We stock multiple sizes, torque ratings, and moisture-resistant designs to match your conductors, environment, and installation method. If you need help selecting the right connector for your splice, Summit’s team can help you finish it right the first time with no guesswork and no rework.
Navigate 3M Connectors:
What you can expect from 3M Connectors.
What you can expect from 3M Connectors.
- Fast Installation – Twist-on caps and IDC models reduce wiring time and avoid the need for stripping or crimping tools.
- Secure Mechanical Hold – Internal spring or blade designs maintain pressure for strong electrical continuity under load.
- Moisture Resistance – Gel-filled connectors seal out water and resist corrosion in damp or buried applications.
- Wide Wire Range – Performance Plus connectors simplify inventory by covering more combinations with fewer SKUs.
- Tap-In Capability – IDC connectors let you splice into lines without cutting or stripping, reducing fatigue and error.
- Color-Coded Sizing – Standard color system helps match AWG sizes at a glance and reduces guesswork in the box.
- UL Listed for 600V – Rated for use in residential, commercial, and control wiring up to 600 volts.
Featured 3M Connector Product Families
Featured 3M Connector Product Families
3M Secure Grip & Highland™ Wire Connectors
Easy-twist caps built for comfort and control.
3M Secure Grip & Highland™ Wire Connectors
Easy-twist caps built for comfort and control.
Includes: Highland H-29 to H-35, Secure Grip SG-Y/R/B/T/G
- Winged and ridged bodies make quick splices easier on hands and faster
- Highland models are UL Listed up to 600 V (and 1000 V for signs and luminaires)
- Durable polymer resists temperatures up to 221 °F for jobsite reliability
3M Performance Plus™ Wire Connectors
Wide-range twist-on connectors that deliver more with less inventory.
3M Performance Plus™ Wire Connectors
Wide-range twist-on connectors that deliver more with less inventory.
Includes: O/B+, T/Y+, R/Y+, T/R+, B/G+
- Designed with a uniquely flexible internal spring to handle the equivalent of 8 standard connectors with only 3 models
- Dual color-coding reduces mix-ups and speeds up selection in the field
- Flexible skirt helps cover over-stripped wires for added safety
3M Scotchlok™ IDC & Tap Connectors
Snap-on connectors that splice without stripping.
3M Scotchlok™ IDC & Tap Connectors
Snap-on connectors that splice without stripping.
Includes: Scotchlok 557, 558, 314U, 316IR, 314
- Insulation displacement “U” contacts clamp conductors without stripping or twisting
- 314 and 314U models offer moisture-resistant seals rated for 600 V and 105 °C
- Variety of styles, including run-and-tap and T-tap versions, to handle multiple applications