Honeywell MU-NKT020 51195199-020 UCN Cable

Core Technical Specifications

The MU-NKT020 51195199-020 UCN trunk cable provides a reliable physical backbone for Universal Control Network communications. This cable measures 20 meters in overall length and features a durable polyurethane outer jacket for industrial environments. The assembly includes two high-quality BNC connectors at each end for secure network terminations. It incorporates dual coaxial conductors with a nominal impedance of 75 ohms for optimal signal transmission.

Parameter	Specification
Brand	Honeywell
Model	MU-NKT020 51195199-020
Category	Control Network Cable
Cable Type	UCN Trunk Cable (dual coax)
Length	20 meters
Impedance	75 Ω (nominal)
Connectors	2 x BNC (each end, 4 total)
Outer Jacket Material	Polyurethane
Conductor Material	Tinned copper
Shielding	Copper braid + aluminum foil
Bend Radius (minimum)	50 mm
Operating Temperature	-40 to 80 °C
Voltage Rating	30V DC
Approvals	UL, CSA, CE

Cable Construction and Signal Integrity

The MU-NKT020 51195199-020 features dual coaxial conductors for redundant communication paths within the UCN segment. Each conductor includes a tinned copper core surrounded by gas-injected polyethylene insulation. The cable employs a dual shielding system of aluminum foil and dense copper braid. This shielding effectively rejects electromagnetic interference from motors, drives, and power cables. Consequently, the cable maintains a stable 75-ohm impedance across its entire 20-meter length.

Connector Design and Installation

BNC connectors at both ends provide secure, twist-lock connections to UCN devices and terminators. Each cable end includes two BNC connectors, making a total of four connectors per assembly. The connectors feature gold-plated center pins for low contact resistance and corrosion resistance. You can route this cable through cable trays, conduits, or direct-burial installations. The polyurethane jacket resists oils, solvents, and mechanical abrasion typical in industrial settings.

Physical Characteristics and Environmental Performance

This cable exhibits a minimum bend radius of 50 millimeters for flexible routing around equipment. Its lightweight construction simplifies installation in overhead trays and vertical cable runs. The MU-NKT020 51195199-020 operates reliably across temperatures from -40 to 80 degrees Celsius. It withstands exposure to UV radiation and moisture without degrading signal quality. The cable’s voltage rating of 30 volts DC supports the low-voltage requirements of the UCN network.

Network Compliance and Signal Transmission

This trunk cable fully complies with Honeywell UCN specifications for data rates up to 5 megabits per second. It carries both data and power for connected field devices on the network segment. The cable supports daisy-chain and trunk-dropline topologies for flexible system architecture. Its 75-ohm impedance matches standard UCN terminators for maximum signal reflection control. The cable also exhibits low attenuation characteristics for distances up to the rated maximum.

Application and System Integration

You can use this cable to connect multiple UCN nodes, including process managers and advanced control modules. The MU-NKT020 51195199-020 also serves as a replacement cable for existing UCN installations with worn or damaged trunks. It integrates seamlessly with Honeywell TDC 3000 and Experion PKS systems. The cable’s 20-meter length suits medium-sized control network segments in process plants. This trunk cable simplifies network troubleshooting with its clearly marked conductor pairs.