Product Hierarchy
Product Hierarchy

1245A2 - CAT3 Horizontal, 4pr, UTP, LS-PVC Jkt, CMP




CAT3, 4-Pair, U/UTP-unshielded, Plenum-CMP, Premise Horizontal cable, 24 AWG solid bare copper conductors, LS-PVC insulation, LS-PVC jacket

Product Overview

Suitable Applications: 802.3 10BaseT, 100BaseT4

Construction Details

Conductor
SizeStrandingMaterialNo. of Pairs
24SolidBC - Bare Copper4
Insulation
MaterialColor Code
PVC - Polyvinyl ChlorideWhite/Blue Stripe & Blue, White/Orange Stripe & Orange, White/Green Stripe & Green, White/Brown Stripe & Brown
Outer Jacket
MaterialMaterial Trade NameNom. DiameterRipcord
PVC - Polyvinyl ChlorideFlamarrest®0.157 inNo

Electrical Characteristics

Electricals
Max. Conductor DCRMax. Capacitance Unbalance
93.8 Ohm/km (28.6 Ohm/1000ft)330 pF/100m
Delay
FrequencyMax. DelayMax. Delay SkewNom. Velocity of Prop.
100 MHz537.6 ns/100m45 ns/100m61%
High Frequency
Frequency [MHz]Max. Insertion Loss (Attenuation) [dB/100m]Min. NEXT [dB]Min. SRL (Structural Return Loss) [dB]Max./Min. Fitted Impedance
12.641.012.0100 ± 15 Ohm
45.632.012.0100 ± 15 Ohm
88.527.012.0100 ± 15 Ohm
109.726.012.0100 ± 15 Ohm
1613.123.010.0100 ± 15 Ohm
Voltage
UL Voltage Rating
300 V RMS

Mechanical Characteristics

Temperature
UL TemperatureOperatingInstallationStorage
60°C-20°C To +60°C0°C To +50°C-20°C To +60°C
Bend Radius
Stationary Min.Installation Min.
2.25 in (57.2 mm)4.75 in (121 mm)
Max. Pull Tension: 25 lbs (11 kg)
Bulk Cable Weight: 18 lbs/1000ft (27 kg/km)

Standards and Compliance

Environmental Suitability: Plenum, Indoor
Flammability / Reaction to Fire: NFPA 262 Plenum (UL 910)
NEC / UL Compliance: CMP
CEC / C(UL) Compliance: CMP
Data Category: Category 3
TIA/EIA Compliance: ANSI/TIA-568-C.2 Category 3
Third Party Performance Verification: Category 3
European Directive Compliance: EU CE Mark, EU Directive 2015/863/EU (RoHS 2 amendment), EU Directive 2011/65/EU (RoHS 2), EU Directive 2012/19/EU (WEEE), REACH: 2017-07-10
APAC Compliance: China RoHS II (GB/T 26572-2011)
Non-Plenum Number: 1229A1

Product Notes

Notes: Electrical values are expected performance based on cable testing and representative performance within a typical Belden system. Print Includes Descending Footage Markings.

History

Update and Revision: Revision Number: 0.439 Revision Date: 09-07-2025

Part Numbers

Variants
Item #ColorPutup TypeLengthUPC
1245A2 009U1000WhiteUnReel1,000 ft612825109761
Date: 2007-06-01
Belden-Copper-Catalog-2016.pdf
Copper-Structured-Cabling-Design-Guide.pdf
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