Put simply, Teleprotection systems monitor transmission line conditions and coordinate tripping to quickly isolate faults.

Dewar have over 40 years’ experience in designing and manufacturing Teleprotection equipment in Australia. Their Teleprotection terminals have been the industry standard for over 30’s throughout Australia and New Zealand.

Dewar provide a 3U full Teleprotection unit with options of G703, VF or C37.94 compatibility and the new slimline version 1U full Teleprotection unit providing C37.94 compatibility.

The simple 1U high teleprotection system; easy to install with minimal set up.

Dewar are proud to introduce the DM1350 system to their teleprotection range.

For more information download the brochures or contact Dewar at
​to answer any questions you may have.

Oil & Gas
Power Substations
Defence & Transportation

DM1300 – The 1U high teleprotection unit saving you space in your substation!

​The DM1300 is the natural evolution from the DM1200. It has all of the same functions as the 1200, but has a new user interface and is much smaller in size which saves you space in your substation.
​The DM1200 has been a favourite in Australian power substations over the past 25 years for its ease of use and economical price.

For more information download the brochures or contact Dewar at
​to answer any questions you may have.


  • 1U high rack mount
  • GUI for easy installation and configuration (“DM1200 Talk”)
  • IEEE C37.94 protocol compliance
  • Front mount LCD screen (no keypad) 20 character, 4 line
  • Front mounted USB port for system configuration
  • Real-time synchronisation by GPS (optional)
  • User configurable trip inputs (48V, 110V, 240V)
  • Alarm and event loggings
  • Real-time clock with battery back-up
  • User swappable power supply modules (48V, 110V, 240V)
  • Removable C37.94 interface modules for support single and multimode operation
  • For substation protection, solar and windfarm monitoring and protection

The DM1200, Dewar’s flag ship product, has been the industry standard for Teleprotection Terminals for over 30 years. It features in transmission installations with every major power authority in Australia and New Zealand. It’s simple but elegant design has made it the favourite of network engineers. It is the product that Dewar Electronics has built its enviable reputation on.

​The Dewar DM1200 Teleprotection unit now features a fully compliant C37.94 optical interface. Options available are 850 Nm multi-mode, 1310 Nm multi mode and single mode and 1550 Nm single mode.
As part of the fibre optic upgrade Dewar has incorporated a LAN port which allows users to configure the DM1200 remotely via their network. Dewar are also pleased to release a new version of the DM1200 Talk configuration software which incorporates mouse driven commands, making it much easier to configure a DM1200 unit.​

The DM1200 Teleprotection Terminal is compatible with:

G.703 Digital signals – Single mode and multi-mode fibre optics available with the addition of an M750 interface terminal
RS422 digital
VF tone
​C37.94 – Single mode and multi-mode fibre optics available

The ZIV (Spain) TPU universal teleprotection terminal operates in both Digital and Analogue channels, can be configured to operate as two independent teleprotection terminals in single shelf.

Compatible with IEC 61850 standard.

Dewar Electronics Pty Ltd

32-34 Taylors Road
Croydon, Victoria, 3136

Phone: 03 9725 3333
Fax: 03 9725 6003


Contact us