3M Wire Connectors

Reliable, high performing solutions for every

wire connecting application.

3Innovation
SAVE TIME, REDUCE INVENTORY
YOU CAN NEVER BE TOO WELL-CONNECTED ON THE JOB
The best connectors do more than fit the application. They also fit your hand.
They feel good to use. At 3M, we design connectors that are as comfortable and
easy to use as they are dependable.
Our complete line provides a wide range of connector choices. Simply choose
the connector that fits your personal preference as well as the application. We
give you plenty of choices.
Start with the unique 3M™ O/B+, T/R+, R/Y+ and B/G+ Wire Connectors.
The Scotchlok™ connectors are our original color-coded line of wire connectors
designed with features requested by electricians. 3M 312, 412, 512 and 512G
Wire Connectors are suited for regular or low-voltage systems in construction,
industrial, maintenance, OEM, or irrigation applications. Highland™ wire
connectors offer an affordable alternative with no compromise to quality.
It’s all here—right at your fingertips—with 3M’s family of easy to use,
versatile, and highly reliable wire connectors.

3M “PERFORMANCE PLUS” CONNECTORS

BROAD WIRE RANGE = INVENTORY SAVINGS
Because of their increased wire range, just three “Performance+” Wire Connectors
handle the work of eight standard connectors. O/B+ replaces the orange, blue, gray and
yellow wire connectors. R/Y+ or T/R+ replace red, tan and yellow connectors. B/G+
covers both the large blue and gray connectors. This simplifies selection of the right
connector for a wide range of wiring jobs. There’s also less inventory to manage,
and a better chance you’ll have the connectors you need to do every job.
In addition, they are exceptionally easy to handle. Their one-of-a-kind design
incorporates a flexible skirt and a rigid top. The flexible skirt covers over-
strips yet conforms to whatever space is available in a box.
This exclusive feature allows Performance Plus connectors to provide
maximum protection and fit inside even the most crowded electrical
boxes.
The rounded wings on the rigid top make 3M wire connectors
exceptionally easy to handle. Twisting the connector—on or off—is
easier than ever. That means fast installation and less wear and tear
on your fingers.
Inside, the unique spring grips quickly, turns on fast and expands to accept
a wide range of wire sizes. It bites into conductors for solid, secure connections. The
3M “plus” connectors also feature a large, funnel-shaped throat design. The connectors
meet UL max-fill requirements. All Performance Plus wire combinations are UL listed for
600 volts on copper wire.
 A better bite for a better connection A broad wire range reduces inventory
3M™ Performance Plus Wire Connectors The versatility of 3M “plus” Wire Connectors saves time
now have a better bite. Wires feed better on the job and reduces inventory. O/B+ replaces orange,
into the connector improving the security blue, gray and yellow connectors; R/Y+ and TR+ replace
of the connection and increasing the level red, tan and yellow connectors; and the B/G+ replaces
of pull out. blue and gray connectors.

New design allows easier Flexible skirt provides safety

installation
The flexible skirts on the 3M Performance
We have modified the internal design Plus Wire Connectors make your customer’s
of the 3M Performance Plus Wire workplace a safer environment. The flexible
Connectors. Installation is smooth, skirt provides protection against potential
fast and easy on the hands. shock situations.

����������������������� ORDERING INFORMATION

3M™ Performance Plus Connector
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����������� ���� ���� ���� ���� ���� ��� ���� Prod Box Bulk Container
���� O/B+ 100 connectors/box 500 connectors/container
���� 10 boxes/case 20 containers/case
1,000 connectors/case 10,000 connectors/case
����
���� T/R+ 100 connectors/box 500 connectors/container
10 boxes/case 8 containers/case
���� 1,000 connectors/case 4,000 connectors/case
R/Y+ 100 connectors/box 500 connectors/container
10 boxes/case 8 containers/case
1,000 connectors/case 4,000 connectors/case
B/G+ 50 connectors/box 250 connectors/container
10 boxes/case 8 containers/case
500 connectors/case 2,000 connectors/case
3M™ SCOTCHLOK ™ Y, R, G AND B CONNECTORS
THE COLOR-CODED ORIGINALS

FLEXIBLE SCOTCHLOK Y, R, G AND

B ELECTRICAL SPRING CONNECTORS
Scotchlok Y, R, G and B Electrical Spring Connectors
are the original color-coded wire connectors
designed with the features electricians request.
They’re flexible yet durable with an outer insulator
that gives you a compact, fully insulated connection
that won’t cut or abrade wires. The Y, R, and G
torque fins are engineered to provide a comfortable
and secure grip that makes installation fast and
back-off easy.
These four spring connectors have a corrosion-
resistant steel inner shell to strengthen them while
permitting spring expansion and contraction due The live-action spring of the 3M™ Scotchlok™
to temperature changes, eliminating poke through. Electrical Spring Connectors delivers reliable,
vibration-resistant connections over a wide
The live- action spring delivers reliable, vibration- range of wire combinations.
resistant connections over a wide range of wire
combinations from 2 #18 through 3 #8 copper
AWG. A deep, flared skirt makes wire insertion easier
and protects against shorts and shiners. Finally, the
design and a flexible base let Scotchlok connectors
bend with the wires you’re slicing to fit easily into
tight places.

Scotchlok ™ Wire Range Capabilities*

* For additional wire combinations, please call 512-984-5555.

The ribs on the Scotchlok B

connector provide a comfortable
and secure grip that make for
a fast installation.
3M™ 312, 412, 512 AND 512G CONNECTORS OFFER CHOICES
FOR RELIABILITY THAT FEEL JUST RIGHT
For regular or low-voltage systems, in construction, industrial
maintenance or OEM, 3M™ connectors are the answer—right
at your fingertips.

NYLON-INSULATED 312 AND 512

ELECTRICAL SPRING CONNECTORS
The quick-spin, wing-torque design of 312 and 512 electrical
spring connectors is easy on your fingers. The day’s last
connection will feel almost as good as the first. Generous
expansion room accommodates a wide range of solid or
stranded wire bundles. Use the 312 (yellow) connector for
wire combinations from 3 #20 to 3 #12 copper AWG and the
512 (red) connector for 2 #18 to 5 #12 300 volt copper AWG.
The 512G (Green) is used for grounding connections.

3M WIRE CONNECTOR 412 The quick-spin, wing-torque design

The 412 connector has been designed with a hexagon shaped of the 3M™ 312, 412, 512 and 512G
Electrical Spring Connectors makes installation
head that makes it usable with a 5/16" socket. It is UL listed for easy on your fingers.
up to four #12 AWG solid or stranded wires. Wing-torque design
enables easy application and back-off.

A wider spring opening enables easier and

faster insertion of larger wire combinations
than with other tan connectors.
HIGHLAND™ CONNECTORS:
COLOR-CODED WIRE CONNECTORS
COLOR-CODED FOR GENERAL WIRING USE
Highland color-coded wire connectors make it quick and easy to match
the right connector to the size of the wire.
The shells are designed to withstand temperatures up to 221°F
(105°C). Highland color-coded wire connectors are UL Listed, CSA
Certified, and work equally well with either solid or stranded copper
wire. H-29 and H-30 connectors are rated to 300V. H-31, H-33 and
H-35 connectors are rated to 600V maximum in building wire; 1000V
maximum in signs or lighting fixtures (luminaires).

Highland™ Color-Coded Wire Connectors

make it quick and easy to match the right
connector to the size of the wire.

Economical, hard-shell wire

connectors that operate in a wide
temperature range.

Highland™ Color-Coded Wire Connector Ordering Information

Product No. Wire Range* Size
H-29 (Gray) 22-16 AWG (Three to Five #22 AWG; Two to Four #20 AWG; Two or Three #18 AWG; Two #16 AWG) 71B
H-30 (Blue) 22-16 AWG (Five #22 AWG; Three to Five #20 AWG; Two to Four #18 AWG; Two or Three #16 AWG; 72B
One #14 AWG w/One #16 AWG)
H-31 (Orange) 22-14 AWG (Five #22 AWG; Three to Five #20 AWG; Two to Five #18 AWG; Two or Three #16 AWG; 73B
Two #14 AWG)
H-33 (Yellow) 22-12 AWG (Four or Five #22 AWG; Three to Five #20 AWG; Two to Seven #18 AWG; 74B
Two to Four #16 AWG; Two or Three #14 AWG; Two #12 AWG)
H-35 (Red) 18-10 AWG (Three to Nine #18 AWG; Two to Six #14 AWG; Two to Four #12 AWG; 76B
Two or Three #10 AWG)

WARNING
Turn power off before installing or removing
terminal or connector. All work should be done
according to appropriate electrical codes.
3M WCD WIRE
CONNECTOR DRIVERS
These application tools for 3M O/B+, R/Y+, 312, 412 and 512,
and Scotchlok™ Y, R, and G connectors quickly spin on the
connector and position the wire bundle in the box. The WCD-H
is a hand driver and the WCD-P is a power driver that fits a
standard chuck.

CONNECTORS APPLICATIONS:
THE POSSIBILITIES ARE ENDLESS
Here are just a few of the general categories and applications for the 3M family of wire connectors.

Recreational Equipment Maintenance

The 3M™ Family of
Motor homes Replacement of motors
Connectors
Trailer hitches and compressors
Refurbishment 3M “Plus” Connectors
Automotive
Ballast lighting O/B+, R/Y+, B/G+, T/R+, TY+
After market equipment
Security systems OEM Scotchlok™ Connectors
Appliances Y, R, G, B
Residential Construction
Lighting fixtures
Branch circuit wiring 3M Connectors
Lamps
Security systems 312, 412, 512, 512G
Vacuums
Ballast lighting
Air conditioning Highland™ Color-Coded
Fans and fixtures
Connectors
Manufacturing
Commercial Construction H-29, H-30, H-31, H-33, H-35
OEM equipment
Branch circuit wiring
Equipment maintenance 3M Connector Tools
Motors and relays
WCD-P, WCD-H
Fire alarm systems

Industrial
Branch circuit wiring
Large motors and compressors

For more information, please call 800-245-3573.

3M is a trademark of 3M Company.

Important Notice INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
Before using this product, you must evaluate it and determine if it PURPOSE. If this product is defective within the warranty period
is suitable for your intended application. You assume all risks and stated above, your exclusive remedy shall be, at 3M’s option, to
liability associated with such use. replace or repair the 3M product or refund the purchase price of
the 3M product. Except where prohibited by law, 3M will not be
Warranty; Limited Remedy; Limited Liability. liable for any indirect, special, incidental or consequential loss
This product will be free from defects in material and manufacture or damage arising from this 3M product, regardless of the legal
at the time of purchase. 3M MAKES NO OTHER WARRANTIES theory asserted.

3
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