Surge Protection Device | Three Phase Surge Arrester With Remote Signalling Monitoring Contacts

Product Description

Conventional SPDs without remote contacts rely entirely on manual inspection; degraded failed modules operate undetected and leave downstream equipment unprotected. This 4-pole surge protection device integrates NC/NO switching remote contacts to send automatic switch alarm signals to automation monitoring platforms upon SPD failure, paired with front visual status window for on-site check, delivering dual local & remote monitoring. With 40kA surge capacity and ≤25ns response time complying with secondary lightning protection standards, pluggable modules enable fast replacement, ideal for unattended power rooms in factories and commercial buildings.

Key Features

Built-in NO/NC dual remote contacts for automatic remote fault alert

Contact load rating matches industrial low-voltage signal circuits

Front visual window supports on-site routine inspection

Max 2.5mm² signal cable fits standard control wiring

Module failure triggers both local visual alert and remote signal output

FAQ:

Q1: Do remote signalling contacts require external power supply?

A: Passive dry contact output with no extra power needed; connect directly to monitoring signal loops.

Q2: Is there transmission distance limitation for remote signals?

A: Standard copper control cables perform stable short-distance transmission inside electrical rooms without signal attenuation.

Q3: Can multiple SPD units share one monitoring circuit?

A: Multiple remote contacts can be paralleled via relays to feed unified alarm signals into central monitoring systems.