Starting at $227.00
  • Usually ships in 1-2 weeks



  • Withstands AC fault crossover voltages
  • Protects against attenuated surges
  • Full voltage range 7/16/32/55/75/200
  • Resets automatically after removal of fault
  • ATEX and IECEx certified intrinsically safe surge protection
  • Maximum surge current: 20kA (8/20μs waveform) per line
  • Terminals: 2.5mm2 (12 AWG)
  • Plug/header screw terminal strip electrical connection


The MTL SSP series is a self-healing surge protector that adds AC fault withstand capability and current limiting protection to traditional hybrid surge technology. The single loop design eliminates the most common cause of surge protector failure (continuous overvoltage/over current conditions) while adding current limiting protection to the circuit.

The use of Surge Protection Devices on communication lines has increased significantly over the last number of years. However, if the communication lines are subjected to induced AC power or AC powercross, the surge protector can pose possible safety hazards. In these circumstances, the surge protector will respond and draw AC current. The magnitude of current could be large enough to represent a fire risk to the surge protector itself or the thin-gauge UTP (unshielded twisted pair) wiring.

The MTL SSP series incorporates circuitry to mitigate the hazards of induced AC or AC power-cross up to 240Vrms. The SSP stops the flow of current in milli-seconds to prevent surge protector and wiring damage. Once the AC power is removed, the SSP will cool down and automatically begins normal operation again.

Should the signal loop be subjected to surges which will not operate the Gas Discharge Tube (GDT), yet operate the other surge protection elements, the additional network will immediately protect these elements by elevating to high resistance. This will stop current flowing through the device and damaging the surge protection elements, while protecting the loop equipment from being subjected to these sustained over voltages.

The MTL SSP series also provides overcurrent protection to the wiring and the load. Should a sustained current of 500mA, or greater, be present, the SSP will stop the current flow, thus providing additional protection to the load and the wiring.