Phoenix Contact VAL-US-277/80/3+1V-FM
Comparison
CITEL DS74US-277Y/G Surge Protective Device (SPD)

CITEL DS74US-277Y/G Surge Protector	VAL-US-277/80/3+1V-FM Surge Protector
Intended Application System
System Voltage	480/277Vac
Number of Phases	3
Conductors	4W+G
Configuration	WYE

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
Manufacturer	CITEL AMERICA INC	Phoenix Contact
UL File #	E326289	E330181
Model	DS74US-277Y/G	VAL-US-277/80/3+1V-FM
Product Image
UL.com Ratings	UL CARD	UL CARD
UL MARK
SPD Type	UL1449 5th Ed. Type 1	UL1449 5th Ed. Type 1
Volt (V)	480/277	480/277
AC/DC DC PV	AC	AC
Phase	3	3
Amps (A)	n/a	n/a
Ambient Min (C)	-40	-40
Ambient Max (C)	+85	+80
Mode	WYE	WYE
VPR (Vpk)
L-L L-N L-G N-G	2500 1500 1500 1200	2500 1500 2500 1200
MCOV
L-L L-N L-G N-G	840 420 420 320	750 385 750 385
In (kA)	20	20
SCCR (kA)	200	200
Additional Data Sheet Ratings
Surge Current Rating (kA) per phase	75	80
Protection Circuit	Multi-MOV+GSG	-
Leakage Current	Yes	-
TOV Optimized	No	-
Diagnostics	Visual Indicator and Remote Contact	Remote Indicator
Environmental Rating	NEMA 2 (IP20)	IP20
# of Wires	5	5
Modes of Protection	Common Mode Differential Mode	Common Mode Differential Mode
Warranty	10-years	Limited Lifetime

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	Yes	No	No	The 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	Yes	Yes	Yes	Yes – 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.

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