Eaton mRFRM Multiplexed Rearfed Fuse and Relay Module

32 outputs, 14 relays, 28 Fuses, High Power, Rugged, and Flexible with J1939 CAN Configuration & Monitoring.

The Eaton mRFRM communicates with other devices on the vehicle’s CAN bus using the SAE J1939 protocol and can be part of a multiplexing system that eliminates the need for individual connections between switches and loads. The Eaton mRFRM works by receiving messages to turn its relays “on” and “off”, and by sending messages indicating the state of its monitored components.

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Dimensions, Overall L 235mm x W 124mm x H 108mm Width and length dimensions are to centerline of mounting points
Connection 4 Connection J1- 14 PIN, J2, J3, J4 - 10 Pin Conn


Supply Voltage (Vdc) 9-32Vdc System voltage for relay outputs
Inputs: Voltage/Frequency/Digital Each input stud rated to 100 amps 100A max per stud
Outputs: Proportional/Digital 14 relay outputs - 10 single, 4 dual 30A max per terminal 28 fuses- 14 relay - 4 direct connection
CAN Communication (2) CAN SAE J1939 -


Operating Temperature Range −40°C to +85°C -
Storage Temperature Range −40°C to +125°C -
Environmental Protection IP66 Silicon and Gore-Tex gasketing


Diagnostic/LEDS/Display 28 System fuses for line safety Failed relay notification via J1939
Processor - -
Software - -
Other Real time monitoring of relay and fuse status Notification via J1939

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