Pluggable 4-Pole 3-Phase SPDs have DIN rail-mount design.

Press Release Summary:

Configured with protection mode of Line-Ground and Neutral-Ground, pluggable 3-phase 4-pole Surge Protection Devices (SPDs) are UL Type 4 recognized and available with MCOV ratings of 150, 180, 275, 320, 420, 550, and 690 Vac. Thermal disconnect design accelerates thermal response time, protecting electrical equipment from incoming impulses, surges, and transient voltages. Each voltage module has unique voltage key to ensure appropriate voltage module and base are connected.

Original Press Release:

ASI 4 Pole Three Phase Surge Protection Devices

Mechanicsburg, PA – Automation Systems Interconnect, Inc. is pleased to announce new DIN Rail mounted Pluggable Three Phase Four Pole Surge Protection Devices (SPD) utilizing a patented thermal disconnect design for fast thermal response time.  This means that expensive electrical equipment is protected from incoming impulses, surges and transient voltages. This means that great cost of downtime and replacement are eliminated. Each Three Phase SPD is configured with a Protection Mode of Line-Ground and Neutral-Ground. Each voltage module has a unique voltage key which ensures that the right voltage module and base are connected. They are available with MCOV ratings of 150 Vac, 180 Vac, 275 Vac, 320 Vac, 420 Vac, 550 Vac and 690 Vac.

These products are UL Type 4 recognized and can be use in Type 1, 2 & 3 applications.  A remote alarm contact with visual indicator allows for easy status monitoring and quick reaction in critical situations. Factory tested for SCCR rating of 200 kA, and are KEMA Certified to IEC 61643-11 2011, Class II.

ASI offers the following variations of SPD products within the UL 1449 3rd Edition grouping:

• 1, 2, 3, and 4 Pole

• Single, Split and Wye Three Phase

• MOV, GDT and combination MOV/GDT

• Replacement MOV and GDT Plugs

For specific product information and competitive prices visit ASI’s updated website at or call the factory toll-free at 717-259-3867.

If you would like more information about this topic, please contact Sally Lanza at 717-249-5581 or email at

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