Relcom update on the MTL FOUNDATION™ Fieldbus portfolio
On 12 June 2026, Eaton has completed the acquisition of the intellectual property and manufacturing capability for the MTL FOUNDATION™ Fieldbus, Asi bus and Ethernet-APL portfolio from Relcom Inc.
For all enquiries related to the acquired FOUNDATION™ Fieldbus portfolio, please contact Eaton directly:
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Commercial support: emeasaleschlu@eaton.com
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Technical support: mtltechsupport@eaton.com
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Product line support: niazahmed@eaton.com
Please note that some of Relcom’s non-FOUNDATION™ Fieldbus products are not included in this acquisition and will be discontinued as Relcom concludes its operations.
CARRIER-BAND TAPS

Relcom Carrier-band Taps are used to attach stations to a Carrier-band network's trunk cable. Relcom makes a variety of taps with a number of options to meet industrial requirements. Carrier-band Taps are housed in industrial-grade, epoxy encapsulated plastic cases.
Relcom's Taps have been used as part of many OEM Industrial DCS systems including Honeywell (TDC 2000 and TDC 3000), Fisher (Provox), Moore Process, etc.
The Taps are very high quality coax interconnection blocks that use the long standard F-connectors. They are also known as "4-Drop Tap Assy", "DCS Tap Module", "Data Highway Port", or "4-Port Drop Tap Kit".
Relcom also makes and supplies Honeywell with Taps. They buy them in packages of two using the following part number for 2, 4, and 8 port Taps (51201394-100, 51201395-100, 51109485-100 respectively).
Model
Description
CBT-22300G
2 Port Tap, 1/4" Mounting Stud
CBT-23300G
2 Port Tap, 6mm Mounting Stud - DISCONTINUED as of July 2024
CBT-42300G
4 Port Tap, 1/4" Mounting Stud
CBT-43300G
4 Port Tap, 6mm Mounting Stud - DISCONTINUED as of July 2024
CBT-82300G
8 Port Tap, 1/4" Mounting Stud
CBT-83300G
8 Port Tap, 6mm Mounting Stud - DISCONTINUED as of July 2024
Relcom Carrier-band Taps are nearing End of Life. Last time shipments estimated mid 2025.
Datasheet
Instructions
