Transient Discriminating MOVTEC

The CRITEC TDS-MOVTEC family of surge diverters offers economical and reliable protection from voltage transients in even the most strenuous applications.The small foot print provides integrators and OEMs with an effective use of real estate when installing within panels and equipment.

Transient Discriminating (TD) Technology, which meets the safety standards of UL1449 Edition 3, provides a superior life by eliminating the common temporary over-voltage failure mode of most SPDs. TD Technology is essential for any site where abnormal over-voltages can occur or where the possible catastrophic failure of traditional technologies can not be tolerated. Alarm contacts are provided which may be used to shut down the system or to activate an external warning if the internal surge material is below optimum condition.


  • Transient Discriminating (TD) Technology provides increased service life
  • Built-in features include TD Technology, thermal protection and short circuit current fusing
  • LED status indication and voltage-free contacts provide remote status monitoring
  • 100 kA 8/20 μs maximum surge rating provides protection suitable for smaller main-distribution panels and an extended operational life
  • TDS-MT configurable to L-L, L-N, L-G or N-G protection


Part NumberTDSMT277
Article Number700230
Nominal System Voltage (Un)230 – 277 V
Nominal Discharge Current (In), Per Mode80 kA 8/20 μs
Max Continuous Operating Voltage (Uc)400 VAC
Stand-off Voltage480 V
Frequency50 – 60 Hz
Connection, Stranded16 mm² Max
Impulse Current (Iimp)20 kA 10/350 μs
Max Discharge Current (Imax), Per Mode100 kA 8/20 μs
Voltage Protection Rating (VPR)700.0 V @ 3 kA
980.0 V @ 20 kA
Aggregate Surge Rating200 kA 8/20 μs
Back-Up Overcurrent Protection100 A
Max Operating Current25 mA
Protection ModesSingle
Status Indication5 segment LED bar graph per phase
TechnologyTD technology with thermal disconnect
Temperature-35 to 55 °C
Enclosure MaterialUL® 94V-0 Thermoplastic
Enclosure RatingIP 20
Depth (D)140 mm
Height (H)150 mm
Width (W)45 mm
Unit Weight0.6 kg
Certification DetailsUL® 1449 Edition 3 Recognized Component Type 2
Complies WithANSI®/IEEE® C62.41.2-2002 Cat A, Cat B, Cat C
ANSI®/IEEE® C62.41.2-2002 Scenario II, Exposure 3, 100 kA 8/20 μs, 10 kA 10/350 μs
Standard Packaging Quantity1 pc

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