Signamax KJ126MT-C3U-WH Voice-Grade 6P6C MT-Series Keystone Jack

  • Exceeds TIA-568-C.2 Category 3 Specifications For Individual Pairs
  • Slim Profile For The High Density Applications
  • Improved Wire Retention And Ease Of Termination With Rear 110 Type Contacts
  • Circuit Identification Icons, Dust Covers, And 110 Protection Caps Included In Kit
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The KJ126MT-C3U-WH is a Voice-Grade 6P6C MT-Series Keystone Jack from Signamax. This keystone jack is designed to support the performance of voice-transmission network applications and low-speed data-transmission applications using standard USOC wiring scheme. The connector contact design provides enhanced plug-to-jack connection integrity, protects against damage caused by insertion of 4- or 6-position plugs and is rated for a minimum of 750 plug insertions providing for the highest level of system reliability. As a special feature, this jack can be terminated with a standard 110 single-position tool or with the Signamax MT-series four-pair tool.


Exceeds TIA-568-C.2 category 3 specifications for individual pairs
Slim profile for the high density applications
Improved wire retention and ease of termination with rear 110 type contacts
Easy-to-read 3-pair USCO wiring scheme color-code label
Compatible with Signamax screened snap-in patch panels and work area faceplates
Circuit identification icons, dust covers, and 110 protection caps included in kit

Transmission MediaUnscreened twisted pair (U/UTP)
Jack Type6p6c (6-position, 6-contact) "RJ12" style
Wiring SchemeThree-pair USOC
Wire Gauge22 to 24 AWG (0.644 to 0.511mm)
Transmission PerformanceANSI/TIA-568-C.2: meets or exceeds individual pair category 3 (up to 16 MHz) component
ConstructionHousing: High impact thermoplastic, UL94V-0 fire retardant
Jack Spring Wire: Phosphor bronze alloy plated with 50 μin of gold over 70 to 100 μin of nickel
IDC: 110 type, phosphor bronze alloy with 100 μin 100% tin alloy
ElectricalInsulation Resistance: Min 500 MOhm @ 100 Vdc
Dielectric Withstanding Voltage: 1,000 Vdc/ac peak contact-to-contact @ 60 Hz for 1 min
Spring Wire Contact Resistance: Max 20 mOhm
IDC Contact Resistance: Max 2.5 mOhm
MechanicalRetention: 50 N (11 lbf) for 60 ± 5 s
Mating Cycle Life: Min 750 cycles
FootprintStandard keystone footprint
ApplicationsX.21, V.11, S0/S1/S2 (ISDN BRI/PRI), ADSL, VDSL, TR-4, TR-16
Environmental ConditionsOperating Temperature: 14° to 140°F (-10° to 60°C)
Storage Temperature: -40° to 158°F (-40° to 70 °C)
Operating RH: 93% Max (non-condensing)
ComplianceANSI/TIA-568-C.2, IEC 60603-7, FCC Part 68 Subpart F, UL 94V-0
Mounting Dimensions1.18" D x 0.67" W x 0.76" H (30.0 x 16.9 x 19.3mm)

Package Contents:
1 x Voice-Gra

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