3M™ Scotchlok™
Self-Stripping Electrical Tap
Connector 558
Data Sheet November 2010
Applications
3M™ Scotchlok™ Self-stripping Ele ctrical Tap Connector 558 is us ed to electrically
connect a (tap) wire end to a through (run) wire and in sulate the connection.
Agency Approv als,
Self Certifications,
Mil Specs
Meets requirements of:
UL Listed, Standard 486C, UL File E23438
CSA Certified, CSA Standard C22.2, No. 0.188-MI9 83 , CSA File No. LR15503,
LR32411
Wire Range
22-16 AWG solid or stranded, tinned or untinned (.5-1.5 mm2 str.) copper cond uct or s.
For use with common thermoplastic insulated wires such as: T, TF, TFF, TFN, TFFN,
AWM, TEW, SAE-GPT with a maximum insulation diameter of .120” (3,0 mm).
Maximum recommended current for general pu rpose:
22 AWG 3 AMPS
20 AWG 4 AMPS
18 AWG 7 AMPS
16 AWG 10 AMPS
Construction
U-Contact: Tin-plated brass, .02 in. (0,5 mm) thick
Insulator: Flame-retardant polypropylene
Color: Red
Specifications
Voltage Rating: 600 volts maximum, building wire
1000 volts signs, fixtures and luminaire s
Temperature Rating: 105ºC (221ºF)
Weight: .0033 lbs (1,50 gm)
Engineering/
Architect
Specification
The Tap Connector 558 is capable of connecting a tap wire to a run wire, in the range
of No. 22 thru No. 16 AWG solid or stranded copper. The connector shall be UL Listed
and CSA Certified for 600 volts maximum, building wire: 1000 volts maximum for signs,
fixtures and luminaires wit h a temperature rating of 105ºC (105ºF) maximum.
Recommended
Installation Tools
3M™ Crimping Tool E-9BM
9” Lineman’s Pliers
3 1 of 2
3M™ Scotchlok™ Self-Stripping Electrical Tap Connector 558
2 of 2
Installation Technique
1. Place unstripped ru n wire inside run cha nnel.
2. Close side cover until latched. Insert unstripp ed tap wire completely and ch eck its position in the
inspection port.
3. Hold tool perpendicular to the wire s and make the connection by driving the u-contact do wn flush with
the top of the plastic insulator.
4. Close hinged top cover until latched.
WARNING
Turn power off before installing or removing terminal. All electrical work should
be done according to appropriate electrical codes.
Shelf Life & Storage
3M™ Scotchlok™ Electri c al Tap Connector 558 has a 5-year shelf life from date of
manufacture when stored in a humidity controlled storage (10°C/50°F to 27°C/80°F
and <75% relative humidity).
Availability
Please contact your local distributor; av ailable from 3M.com/electrical [Where to Buy]
or call 1.800.245.3573.
Important Notice
All statements, technical information, and recommendations related to 3M’s products are based on
information believed to be reliable, but the accuracy or completeness is not guaranteed. Before using this
product, you must evaluate it and determine if it is suitable for your intended application. You assume all
risks and liability associated with such use. Any statements related to the product, which are not contained in
3M’s current publications, or any contrary statements contained on your purchase order, shall have no force
or effect unless expressly agreed upon, in writing, by an authorized officer of 3M.
Warranty; Limited
Remedy; Limited Liability
This product will be free from defects in material and manufacture at the time of purchase. 3M MAKES NO
OTHER WARRANTIES INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. If this product is defective within the
warranty period stated above, your exclusive remedy shall be, at 3M’s option, to replace or repair the 3M
product or refund the purchase price of the 3M product. Except where prohibited by law, 3M will not be liable
for any indirect, special, incidental or consequential loss or damage arising from this 3M product, regardless
of the legal theory asserted.
3M and Scotchlok are trademarks of 3M Company.
3
Electrical Markets Division
6801 River Place Blvd.
Austin, TX 78726-9000
800.245.3573
FAX: 800.245.0329
www.3M.com/electrical
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