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Navigating the UL Safety Requirements for Surge Protection (,pdf)

From Mersen

Specifiers and users of Surge Protective Devices (SPDs) are adjusting to new terminology and requirements. UL revised their 1449 Safety Standard for Surge Protective Devices to increase safety. The National Electrical Code (NEC) incorporated specific language to require the use of these safer products. This tip sheet will explain some of the changes affecting specifiers and users.

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Products & Services
Single Phase Surge Suppressors
Single phase surge suppressors protect equipment from transient overvoltages present on AC single phase power lines.
Board Mount Surge Suppressors

Board mount surge suppressors are devices mounted on a printed circuit board (PCB) used to protect equipment from transient over voltages in power, data, and telephone circuits.

Surge Suppressors
Surge suppressors are used to protect equipment from transient over voltages in power, data, and telephone circuits.
Surge Protective Devices (SPDs)
Surge protective devices (SPDs) are designed to protect equipment against temporary excess voltage and/or current.
Product Announcements
Mersen - Mersen's Surge-Trap: Fail-safe and Economical
The Surge-Trap Type 1 SPD meets requirements for UL 1449 Third Edition and is ideal for indoor applications. It provides a 2-year warranty and offers an economical replacement for the former Surge... (read more)
Mersen - New Surge-Trap® X-Series Surge Protective Devices
Mersen, formerly Ferraz Shawmut, introduces its new Surge-Trap® Type 1 X-Series line of UL 1449 3rd edition approved surge protection devices (SPDs). Providing overvoltage protection for all locations... (read more)
Cooper Bussmann, Inc. - SurgePOD™ HEAVY DUTY Surge Protection Made Simple™
Today’s world is full of electronic products and electrical devices that are susceptible to damage from overvoltage surges. Cooper Bussmann offers a wide selection of surge protection products... (read more)
Mersen - New Surge-Trap Pluggable SPD
The Surge-Trap Pluggable SPD meets requirements for both UL 1449 Third Edition and IEC 61643 standards. Like its modular predecessor, the pluggable SPD features TPMOV® technology and is a "no-fuse"... (read more)
Mersen - DIN-rail-mount transient-voltage surge suppressor
Surge-Trap® Surge Protective Device is a no-fuse surge suppressor. The Surge-Trap is a UL 1449 Third Edition compliant surge protective device with a modular thermally protected transient voltage... (read more)
CITEL SURGE PROTECTION - CITEL - DS60VGPV - PV Surge Protection
DS60VGPV is a DC Surge Protection Device (SPD) using the CITEL Long Life Expectancy VG Technology. This is the only no leakage current SPD on the market. CITEL VG Technology allows to increase the... (read more)
Topics of Interest

The past two years have seen many changes in codes and standards of surge protective devices (SPDs). The specific standards are from Underwriters Laboratories (UL), and the National Fire Protection...

Installing surge protective devices (SPDs) in health care facilities is complicated by the requirement to separate the electrical distribution among normal, essential, and emergency (i.e., critical...

As of April 26, 2006, suppliers of UL listed Industrial Control Panels (ICP) must clearly label the Short Circuit Current Rating (SCCR) of each panel so that users can properly apply them per National...

Since 1985, Underwriters Laboratory (UL) 1449 standard has been providing safety guidelines for Surge Suppression, a topic found in the past to have very little structure or commonality across the...

Surge Standards seem disjointed? Help is here! UL 1449 was revised into UL 1449 Second Edition Revision (Rev 2.5) to include Intermediate Fault Current Testing. This became effective Feb 2007. This...