COVID-19 - update

The health and well-being of our employees, customers and suppliers are of paramount importance to us.

We continue to monitor the latest advice and guidance from the government and are working on measures across our business to minimise any future disruption which we may experience.

Motortronics has been deemed part of the “essential” business supply chain due to the industries and customers we serve.

We have a carefully restructured operation in place to ensure continuity of service and supply and will continue to ensure that we are following latest government & health guidelines to support the health and welfare of our staff worldwide.

Our staff are available via phone, email or video conference facilities in lieu of face to face meetings.

We are continuing to monitor the situation and should anything change a member of our team will be in touch directly. For more information click here for a statement from Motortronics’ Vice President – Joyce Mitchell.


Control Voltage 110 - 240 Vac
Inputs 12 RTD inputs (Pt100, Ni100, Ni120, Cu10)
3 CT inputs for differential CT’s
2 isolated 4-20mA inputs **
3 isolated Digital Inputs*
Outputs 3 programmable form C Relays with 5A contact rating pilot duty
One isolated 4-20mA output **
Keypad 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
* Digital Inputs share a common ground point. ** All analog I/O share a common ground point.

For EU compliance information please contact Motortronics UK

Email Newsletter