User Guide

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 412 connector has been designed with a hexagon shaped
head that makes it usable with a 5/16" socket. It is UL listed for
up to four #12 AWG solid or stranded wires. Wing-torque design
enables easy application and back-off.
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
™
CONNECTORS:
COLOR-CODED WIRE CONNECTORS
The quick-spin, wing-torque design
of the 3M
™
212, 312, 512 and 512G
Electrical Spring Connectors makes installation
easy on your fi ngers.
Highland
™
Color-Coded Wire Connectors
make it quick and easy to match the right
connector to the size of the wire.