
HEAVY DUTY 1/4" COMMERCIAL PHONE PLUGS
SERIES 188 AND 299 PLUGS
click here to download a schematic drawing
(you will need to have Adobe Acrobat installed on your system to do this)
* Switchcraft's 188 is more heavy-duty than our
competitor's biggest 1/4" commercial phone plugs.* Large curved tip solder terminal makes it easier to
solder to heavy gauge wires.* Longer sleeve terminal allows more room to make
sleeve solder connections.* Extra-large cable clamp securely grips cable of up
to .450" in diameter.* Will easily accommodate some varieties of four
conductor 14 gauge wire and parallel two conductor
12 gauge wire.* Bendable tab on sleeve terminal makes
termination easier by holding down cable while soldering.
In addition, such mechanical retention makes for a
superior solder connection.* Will handle up to 15 A. rms (maximum).
SPECIFICATIONS
Contact Resistance (typical *D.O.M.J.):< 0.020 ohms.
Dielectric Withstand Voltage: 500 VAC (minimum).
Insulation Resistance @ 500 VDC: 2,000 megohms
(minimum).Insulation Resistance (after MIL-STD-202 Salt Spray): 1,000 megohms (minimum).
Working Voltage: 250 VAC, 140 VDC.
Current Carry @ Working Voltage For 188 Plug (typical *D.O.M.J.) : 15.0 AMPS.
Current Carry @ Working Voltage For 299 Plug (typical *D.O.M.J.) : 6.0 AMPS.
Insert/Withdrawal Force: *D.O.M.J..
Soldering Requirement: ANSI/J-STD-001.
Temperature Range: -40° to + 85° Centigrade
U.L. Component Recognition File No.: E118169.Life: *D.O.M.J.
Maximum Cable Size For 188 Plug: 12 AWG stranded,
up to .450" diameter.Maximum Cable Size For 299 Plug: .290" diameter.
MATERIALS
Tip: Nickel-plated copper alloy.
Sleeve: Nickel-plated copper alloy.
Handle: Nickel-plated copper alloy.
Tip Terminal: Copper alloy, electrotin-plated.
Cable Clamp: Copper alloy, electrotin-plated.
Insulators For 188 Plug: Thermojet plastic,
thermoplastic, thermoplastic film, P.P.O.Insulators For 299 Plug: Thermoplastic,
thermoplastic film, glass epoxy.*D.O.M.J. - Dependent On Mating Jack
Part
NumberMaximum Cable Size Mating
Jack188 .450" Diameter Z15J 299 .290" Diameter Z15J
MM CONVERSIONS Series Catalog
Dimension+ tol/-tol Range mm equiv. Use Series 188 3.127 79.4258 79.43 2.063 52.4002 52.40 0.688 17.4752 17.48 0.453 11.5062 11.51 1/4 0.250 6.35 6.4 1.000 25.4 25.40 Series 299 2.736 69.4944 69.49 1.188 30.1752 30.18 0.047 1.1938 1.19 1/4 0.250 6.35 6.4 1.625 41.275 41.28 0.500 12.7 12.70
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