A Guide for Sales Reps
ANSI/UL 1449 Third Edition
Field Summary
SPD TYPE:
UL now categorizes surge protective devices (SPD) into categories based on its intended application.
•TYPE 1 - Connect anywhere in the customer’s facility – we strongly urge this to be specified for all
critical installations.
•TYPE 2 - Connect downstream on load side of main breaker. Be aware that some competitors may
have “conditions of acceptability” that can limit how the device is installed.
•TYPE 3 - Typically cord connected, plug in devices.
•TYPE 4 - Components
Nominal Discharge Current (I Nominal Rating):
This is the peak value of surge current which goes through the SPD (15 surges).
•TYPE 1 - UL tests to 10kA or 20kA. Not to be confused with maximum kA rating of the device.
We recommend 20kA I Nominal rating be specified. While this is the highest UL rating, it is a low
level surge which should be required by any device in even moderate exposure installations.
•TYPE 2 - UL tests to 3kA, 5kA, 10kA or 20kA I Nominal ratings. Again, 20kA is recommended for
all specified SPDs located at service entrances.
Voltage Protection Rating (VPR):
These ratings replace the Suppressed Voltage Ratings (SVR) of the prior standard. UL uses a surge six
times the kA level of the SVR testing, so ALL VPR ratings are higher than SVR ratings.
SPD Locations by UL 1449 Types
Summary:
This new standard presents a great
opportunity to educate your engineers on the advantages of Liebert
Surge Protection products. Our
long-standing surge and fuse technology allowed us to meet/exceed
this standard long before it became
a requirement. When revising specifications with your engineers, require
the most stringent category and
classification of SPDs: Type 1, 20kA I
Nominal for all service entrance
applications. Further, encourage the
official UL mark as a requirement on
all products as the testing authority
of choice.
Headquarters
Ordering Information:
Liebert SI (Interceptor), LM and Type SS Products:
•All standard part numbers will be listed as Type 1SPD with an
I Nominal of 20kA. This Type 1rating allows the greatest
flexibility, since the SPD can be applied in any location.
Surge Protection
100 Emerson Parkway
Binghamton, NY 13905
T: 607-721-8840
T: 800-288-6169
F: 607-722-8713
Technical Support
800 288 6169 Toll-Free
Liebert ACV (AccuVar) Products:
•All “E” option products (with EMI/RFI Filtering), will be listed
as Type 2 SPD with an I Nominal of 20kA. All other ACV models
will be listed as Type 1 SPD with an I Nominal of 20kA.
Liebert LPGE Products:
•All part numbers will be listed as Type 2 SPD with an
I Nominal of 20kA.
Liebert HA (Hybrid Advantage) Products:
•All part numbers will be listed as Type 2 SPD with an
I Nominal of 5kA.
PowerSure Products:
•All LPM Medium Exposure part numbers will be listed as
Type 2 SPD with an I Nominal of 10kA.
•All LPL Low Exposure part numbers will be listed as Type 2 SPD
with an I Nominal of 3kA.
While every precaution has been taken to ensure accuracy and
completeness in this literature, Emerson Network Power
assumes no responsibility, and disclaims all liability for
damages resulting from use of this information or for any
errors or omissions.
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throughout the world. Specifications subject to change
without notice.
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