3M 557 User Manual
Data Sheet
1
SCOTCHLOK 557
IDC Electrical Tap Connector
Application:
Use part No. 557 to electrically connect two wire ends and
insulate the connection.
Wire Range:
22–16 AWG solid or stranded, ( 0,5 – 1,0 mm
2
solid or
stranded and 1,5mm
2
solid )tinned or untinned copper conductors. For use with common thermoplastic insulated wires
such as: T, TF, TFF, TFN, TFFN, AWN, TEW, SAE–GPT,
with a maximum insulation diameter of .120 inches
( 3,0 mm ).
Maximum recommended current for general purpose
applications:
22 AWG – 3 Amps, 20 AWG – 4 Amps,
18 AWG – 7 Amps, 16 AWG – 10 Amps
Construction:
U–Contact Tin plated brass, .02 inches thick
( 0,5 mm )
Insulator Flame retardant polypropylene,
color, Red.
Weight:
.0030 lbs. ( 1,37 gm )
Engineering Specification:
The connector shall be UL Listed and CSA Certified as a
pressure cable connector for 600 volts maximum, building
wire; 1000 volts maximum, signs, fixtures and luminaries.
The insulation shall be rated for 105°C. The connector shall
also meet the intent of the Standard for Portable Electric
Lamps, UL 153, specifically Paragraph 14.2, when housed
within the body of the lamp.
Regulatory Agencies:
UL File No. E23438
Tested per UL Standard 486C
CSA File No. LR15503, LR32411
Tested per CSA Standard C22.2 No. 188–M1983
( Voltage rated at 600 volts maximum, building wire; 1000
volts maximum, sings, fixtures, and luminaires. T emperature
rated 105°C. )
Federal Specification W – S – 610
* Commercial Packaging Only *
Type Class Kind Style
II I cu F
Installation Instruction:
Caution: – Turn power off before installing connectors.
All electrical work should be done according to appropriate
electrical codes.
1. Insert unstripped wire completely and check their position in the inspection ports.
2. Hold tool perpendicular to the wire and make the connection by driving the u–connection down flush with the top
of the insulator.
3. Close hinged top cover until latched.
IMPORTANT NOTICE:
All statements, technical information and
recommendations related to the Seller’s
products are based on information believed to
be reliable, but the accuracy or completeness
thereof is is not guaranteed. Before utilizing
the product, the user should determine the
suitability of the product for its intended use.
The user assumes all risks and liability
whatsoever in connection with such use.
All statements or recommendations of the seller
which are not contained in the Seller’s current
publications shall have no force or effect unless
contained in an agreement signed by an
authorized officer of the Seller. The statements
contained herein are made in lieu of all
warranties express or implied, including but not
limited to the implied warranties of
merchantability and fitness for a particular
purpose which warranties are hereby
expressly disclaimed.
SELLER SHALL NOT BE LIABLE TO THE
USER OR ANY OTHER PERSON UNDER ANY
LEGAL THEORY, INCLUDING BUT NOT
LIMITED TO NEGLIGENCE OR STRICT
LIABILITY, FOR ANY INJURY OR FOR ANY
DIRECT OR CONSEQUENTIAL DAMAGES
SUSTAINED OR INCURRED BY REASON OF
THE USE OF ANY OF THE SELLER’S
PRODUCTS.
3M Electrical Products Division
6801 River Place Blvd.
Austin, Texas 78726–4599
1991 3M
7 / 26 / 91
314
22–14
314
22–14
557
22–16
558
22–16
560
18–14
560B
18–14
560N
18–14
562
12–10
564
18–14
905N
18–14run
22–18Tap
567
12–10run
18–14tap
905
18–14run
22–18Tap
951
22–18
952
18–14
953
12
UR
19–26
Solid
UB
22–26
Solid
Part #
Wire
Range
Type of
Connector
Listed Certified
Part #
Wire
Range
Type of
Connector
Listed Certified
NOTE: For complete wire combinations or other
technical information see individual data sheets or
contact Technical Service.
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