TE-RTD12 Motor RTD Monitor / Relay Device



12 built-in RTD Inputs

2 Isolated Digital Inputs (4-20mA)

3 Programmable Form-C Output Relays

2 Isolated Analog Inputs (4-20mA)

Differential Current Feedback Monitoring

RS485 MODBUS-RTU Communication


Control Voltage 110 - 240 Vac

12 RTD inputs (Pt100, Ni100, Ni120, Cu10)
3 CT inputs for differential CT’s
2 isolated 4-20mA inputs ð
3 isolated Digital Inputs*


3 programmable form C Relays with 5A contact rating pilot duty
One isolated 4-20mA output ð


Two 4-digit displays, one for the RTD name (St1, St2, Fb, rb…) and one for the temperature.
1 green ‘OK’ LED, 1 yellow ‘ALARM’ LED, 1 red ‘TRIP’ LED and 3 Relay LED’s.
7 pushbuttons: 4 arrows, 1 ‘Function’, 1 ‘Enter’ and a ‘Reset’ button

Differenctial CT's

Primary 5 - 2000A
Secondary 1A or 5A
Alarm and Trip Levels OFF, 5% to 90 % of CT value
Important: The differential CT  feature is NOT designed to act as a UL Ground Fault or Over Current protection.

Resolution / Accuracy Analog Inputs better than 1%, Analog Outputs better than 0.5%
Communication Port 2 Wire RS485*
Serial Protocol MODBUS RTU
I/O Terminals Removable terminal blocks
Operating Temperature 32ºF – 122ºF / 0ºC to 50ºC
Storage Temperature -4ºF – 176ºF / -20ºC to 80º
Humidity 10% to 90% (non-condensing)
Approvals UL, CUL
* RS485 and Digital Inputs share a common ground point ð All analog I/O share a common ground point.