DT1M275M replacement module for DT1M275 Class I & Class II 25kA @10/350us


Surges and voltage transients are a major cause of expensive electronic equipment failure and business disruption. Damage may result in the loss of capital outlays, such as computers and communications equipment, as well as consequential loss of revenue and profits due to unscheduled system down-time.

nVent ERICO offers multiple series of surge protective devices (SPDs) suitable for a vast range of applications that provide reliable protection from voltage transients on power distribution systems. The DT1M Series DIN Rail Surge Protective Devices provide reliable and efficient protection against voltage transients within the IEC Class I (25 kA) environment. Tested and independently certified to the IEC standard, the DT1M Series provides a range of compact, safe and high surge rated performance features for the harsh IEC Class I environment and suitable for protection within a wide range of applications.

Additionally, the nVent ERICO DT1M Series sets itself apart from the competition with an innovative and unique technology. This technology advancement provides spark gap-like performance with MOV current extinction. The same technology allows the DT1M Series to be thinner than the competition by as much as 50% and can also be universally coordinated with any Class II or Class III SPD.


  • Spark gap surge performance with MOV-like current extinction
  • Universally coordinated with any Class II or Class III surge protection devices
  • Follow current limitation, no tripping of a 16 A gG fuse
  • Retaining clip ensures enhanced vibration and shock resistance performance
  • Red/Green status indication and change-over contacts standard for remote monitoring
  • Includes thermal disconnect for safe end of life


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