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Weidmueller VPU AC II 3+1 350/50
Comparison
CITEL DS74US-277Y/G Surge Protective Device (SPD)

DS74US-277Y/G v.2 562 W Pixels
CITEL DS74US-277Y/G
Surge Protector
VPU AC II 3+1 350/50
Surge Protector

Intended Application System

System Voltage480/277Vac
Number of Phases3
Conductors4W+G
ConfigurationWYE

PRODUCT COMPARISON TABLE

This page collects publicly available data from ul.com and assembles a side by side reference table for a convenient product cross reference.

Brand Citel Logo
ManufacturerCITEL AMERICA INCWeidmueller
UL File #E326289E354261
Model
DS74US-277Y/G


VPU AC II 3+1 350/50

Product Image DS74US-277Y/G v.2 562 W Pixels

UL.com Ratings


UL CARD


UL CARD

UL MARK
SPD TypeUL1449 5th Ed. Type 1UL1449 5th Ed. Type 1CA(4-1)
Volt (V)480/277480/277
AC/DC
DC PV
ACAC
Phase33
Amps (A)n/an/a
Ambient Min (C)-40-40
Ambient Max (C)+85+80
ModeWYEWYE
VPR (Vpk)
L-L
L-N
L-G
N-G
2500
1500
1500
1200
3000
1500
3000
1000
MCOV
L-L
L-N
L-G
N-G
840
420
420
320
700
350
350
350
In (kA)2020
SCCR (kA)200200

Additional
Data Sheet Ratings

Surge Current
Rating (kA)
per phase
7550
Protection CircuitMulti-MOV+GSG-
Leakage CurrentYes-
TOV OptimizedNo-
DiagnosticsVisual Indicator and Remote ContactRemote Indicator
Environmental
Rating
NEMA 2 (IP20)IP20
# of Wires55
Modes of ProtectionCommon Mode
Differential Mode
Common Mode
Differential Mode
Warranty10-years5-years
Notes
none

Determining the acceptability of an SPD for your UL equipment

(for UL 508A Control Panels and All Other UL Listed Equipment)

The UL inspector will first consider the SPD type when determining it’s acceptability for a given application or piece of equipment. This will include UL 508A as well as all other UL Listed equipment. The first level compliance is based on the UL Approval (LISTED or RECOGNIZED) of the SPD or UL SPD Type and it’s Suitable Ratings. This means that it has to meet all safety, performance, environmental and electrical system ratings of the application. If any of these criteria are not fully met, it will require a Procedure Description, a File Update and/or Additional Testing. These actions will require additional costs that may be substantial. For this reason, it is in the interest of the specifier to use UL LISTED SPD’s to eliminate any uncertainty or to make sure the UL RECOGNIZED SPD is selected at the time of UL submittal of the equipment.

Approval Considerations Table based on UL SPD Type

UL
Mark
UL1449
SPD Type
Suitable
Ratings
Procedure
Described
File
Update or
Additional
Testing
Notes
1

2
YesNoNoThe only requirement is that the SPD must match electrical and environmental ratings of the UL 508A Control Panel.

A UL field inspection of the control panel with the SPD installed is required as a part of a standard follow-up service visit.
1CA

2CA

4CA

5
YesYesYesYes – All UL recognized SPD’s require a UL engineering evaluation of the SPD’s existing UL1449 E–file.

This will result, at a minimum, in a cost to update the UL file and may also require testing that would result in additional costs.
UL data is publicly available with a free account at UL.com. The data has been reviewed by our engineering department. From time to time, the applicants UL file (including CITEL's) may become changed or updated at UL.com due to new testing or corrections to a report. At the time of this comparison you will find this information to be accurate to the UL web site. If you find any information requires an update, please bring to our attention and it will be updated immediately.

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Where to purchase Citel SPD's