Home » Product Category » Signal-product » Surge Protector » Surge Protective Device

Surge Protective Device

Robust surge protection up to 40kA, it incorporates intuitive fault indication and remote monitoring interfaces to ensure the safety and maintainability of critical power systems.
Availability:
Quantity:
facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
whatsapp sharing button
sharethis sharing button
  • S-Pro Series SPD

S-Pro series of SPD is primarily designed to protect field devices such as transmitters, switches, frequency signals, communication equipment, thermistors, thermocouples, and other field instruments connected via two-wire or three-wire systems, as well as control room equipment including DCS and PLC I/O systems, safeguarding them from damage caused by surges or operational voltages.


Product Advantage

S-Pro Series Surge Protectors feature the following key functions:

1) Ultra-slim 7.6mm housing for space-saving installation

2) Flexible grounding options via rail or terminal connections for broad applicability


Technical Parameters

CS


Product Uses

Transmitters, switches, frequency signals, communication equipment, thermistors, thermocouples, and other field devices connected via two-wire or three-wire systems, as well as I/O devices such as DCS and PLC systems in the control room.


Q. Model notation: S(P)-5(24)-L(D)2(3)

S: Signal type, P: Power supply type

5: Rated operating voltage up to 5VDC, 24: Rated operating voltage up to 24VDC

L: Rail-mounted two-wire system, D: Base-mounted system

2: Two-wire system, 3: Base-mounted three-wire system


Q. Selection Guidelines: How to choose the appropriate SPD for different field applications:

1) Select the P series for power supply applications, compatible with 24VDC.

2) S-5-L(D)3 is suitable for signals with rated operating voltages up to 5VDC, such as resistance temperature detectors (RTDs) and thermocouples.

3) S-24-L(D)3 is suitable for transmitters, valve positioners, electromagnetic flowmeters, switches, frequency signals, communication equipment, 4–20mA analogue signals, and other field devices, as well as control room DCS/PLC I/O signals with rated operating voltages up to 24VDC (due to differing protection standards, S-24-L2(3) is not recommended for 5VDC or lower applications)


Q. Signal Connection Query: Can the SPD be reverse-connected?

No. Reverse connection will cause the product to lose its original surge protection capability. This product employs a multi-level, coordinated protection system: high-energy surges are first mitigated by the gas discharge tube, followed by protection from the TVS diode to safeguard the equipment.


Previous: 
Next: 

Quick Links

Tel
+86-571-81119742
Add
SUPCON Park, No.309 Liuhe Road, Binjiang District, Hangzhou, 310053, China. 
Copyright  2025 Zhejiang SUPCON Instrument Co., Ltd. All Rights Reserved. 浙ICP备12041967号-6