• No.2, First Floor,8th
    Street,Nandanam Extension,
    Chennai - 600035
  • No.1073,15th Cross,
    30th Main, Banashankari
    2nd Stage, Bengaluru
  • Monday - Saturday
    9:30am - 6:30pm
    Sunday CLOSED

SPD for Instrumentation

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  • SPD for Instrumentation

Field mounted transmitters are more prone to failures due to surges as they are installed in open atmosphere. TSP series protectors are specially designed to protect field mounted process transmitters. All the models are intrinsically safe. They can be added directly to hazardous area transmitters without affecting safety. We have SPDs for full range of thread standards and any kind of process control transmitters like 2, 3 or 4 wires. TSP series has the models to perfectly fit into the spare conduit entry of any process transmitter housing.

Power Lines Devices TSP-V24/N1

SPD for Instrumentation


  • Intrinsically safe and flameproof
  • Multi-stage protection offers exceptional safety
  • All mode protection
  • Compact & easy installation
  • 3  & 4 wire protection also available

General Specifications

Maximum Working Voltage U 34 V dc
Voltage Protection Level Up 43 V
Maximum Discharge Current Imax 10 kA (8/20 µS)
SPD Class Class II
Protection Modes Common Transverse
Protection Stages 2 Stages
Earth leakage current    < 10 μA
Response time, tA   < 5 nS
Bandwidth 2 MHz
Capacitance 30 pF
Standards compliance IEC 61643-21
Applicable Zones EExia IIC, T4 & EExd IIC, T4
Earth Connection Flying Lead
Case Material Brass (nickel plated)
Conductor Size 2.5 sq.mm
Connection wires Parallel, 3 flying leads
(line1, line2 & Earth)
Types of Threads 1/2" NPT (M)