VPU AC II US 3 R 277/50
VPU AC II US 3 R 277/50
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Schematic circuit diagram

VPU AC II US 3 R 277/50

Surge voltage arrester, Low voltage, Surge protection, with remote contact, TN-C

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Approvals General ordering data Dimensions and weights Temperatures Environmental Product Compliance Rated data UL Connection data, remote alert General data Insulation coordination acc. to EN 50178 Rated data IEC / EN Connection data Electrical data General data Ratings IECEx/ATEX/cUL Guarantee Classifications

Approvals

Approvals
![](https://mdcop.weidmueller.com.cn/mediadelivery/rendition/900_319222/-S800/-T1z1mm-S80)  
![](https://mdcop.weidmueller.com.cn/mediadelivery/rendition/900_319228/-S800/-T1z1mm-S80)  
![](https://mdcop.weidmueller.com.cn/mediadelivery/rendition/900_319263/-S800/-T1z1mm-S80)  
ROHS
Conform  
UL File Number Search
[UL Website](https://database.ul.com/cgi-bin/XYV/cgifind/LISEXT/1FRAME/gfilenbr.html)  
Certificate no. (cULus)
E354261  

General ordering data

Version
Surge voltage arrester, Low voltage, Surge protection, with remote contact, TN-C  
Order No.
2730600000  
Type
VPU AC II US 3 R 277/50  
GTIN (EAN)
4050118807509  
Qty.
1  items

Dimensions and weights

Depth
68  mm
Depth (inches)
2,677  inch
Depth including DIN rail
76  mm
Height
104,5  mm
Height (inches)
4,114  inch
Width
54  mm
Width (inches)
2,126  inch
Mounting dimension - height
75  mm
Net weight
387  g

Temperatures

Storage temperature
-40 °C...85 °C  
Operating temperature
-40 °C...85 °C  
Humidity
5 - 95% rel. humidity  

Environmental Product Compliance

RoHS Compliance Status
Compliant without exemption  
REACH SVHC
No SVHC above 0.1 wt%  

Rated data UL

Ambient temperature (operational), max.
85  °C
Rated Voltage UN
277  V
MCOV (L-PE)
350  V
SCCR
200  kA
In
20  kA
Category
SPD TYPE 1  
Connection cross-section AWG, min.
AWG 14  
Connection cross-section AWG, max.
AWG 6  
Ambient temperature (operational), min.
−40  °C
MODE
all modes  
VPR (L-L)
2 000  V
VPR (L-PE)
1 000  V
Voltage type
AC  
UL Energy Networks
3-phase WYE  

Connection data, remote alert

Connection type
PUSH IN  
Cross-section for connected wire, solid core, max.
1,5  mm²
Cross-section for connected wire, solid core, max. (AWG)
AWG 10  
Cross-section for connected wire, solid core, min.
0,25  mm²
Cross-section for connected wire, solid core, min. (AWG)
AWG 30  
Stripping length
12  mm

General data

Colour
orange  
black  
Design
Installation housing; 3TE  
Insta IP 20  
Operating altitude
≤ 4000 m  
Optical function display
green = OK; red = arrester is defective - replace  
Protection degree
IP20 in installed state  
Rail
TS 35  
Segment
Power distribution  
UL 94 flammability rating
V-0  
Version
Surge protection  
with remote contact  

Insulation coordination acc. to EN 50178

Pollution severity
2  
Surge voltage category
III  

Rated data IEC / EN

Discharge current Imax (8/20µs) wire-PE
50 kA  
Discharge current In (8/20µs) wire-PE
20 kA  
Energy coordination (≤10 m)
Type II  
Type III  
Follow-on current extinguishing capability Ifi
Follow current need not be taken into account  
Frequency range, max.
60  Hz
Frequency range, min.
50  Hz
Fuse
No Fuse neccessary ≤315 A gG  
250 A gG @50 kA Isccr  
315 A gG @25 kA Isccr  
Leakage current at Un
0,5  mA
Low voltage network
TN-C  
Mains voltage
277 V / 480 V  
Max. continuous voltage, Uc (AC)
350 V  
Number of poles
3  
Protection level Up at IN (L/N-PE)
≤ 1.75 kV  
Rated voltage (AC)
277  V
Requirements category acc. to IEC 61643-11
Type II  
Requirements class, acc. to EN 61643-11
T2  
Response time
≤ 25 ns  
Short-circuit current rating ISCCR
50  kA
Signalling contact
250 V 1A 1CO  
SPD type
T2  
Standards
IEC 61643-11  
EN 61643-11  
UL 1449  
NFPA 79  
Temporary surge voltage (over-voltage) - TOV
403  V
Voltage type
AC  

Connection data

Stripping length
18  mm
Wire connection method
Screw connection  
Type of connection
Screw connection  
Stripping length, rated connection
18  mm
Tightening torque, min.
3  Nm
Tightening torque, max.
4,5  Nm
Clamping range, rated connection
16  mm²
Clamping range, min.
1,5  mm²
Clamping range, max.
35  mm²
Wire connection cross section AWG, min.
AWG 16  
Wire connection cross section AWG, max.
AWG 2  
Wire cross-section, solid, min.
1,5  mm²
Wire cross-section, solid, max.
35  mm²
Wire connection cross section, finely stranded, min.
4  mm²
Wire connection cross section, finely stranded, max.
35  mm²
Conductor cross-section, flexible, AEH (DIN 46228-1), min.
2,5  mm²
Conductor cross-section, flexible, AEH (DIN 46228-1), max.
35  mm²
Connection cross-section, stranded, min.
1,5  mm²
Connection cross-section, stranded, max.
35  mm²

Electrical data

Voltage type
AC  

General data

Number of poles
3  
Protection degree
IP20 in installed state  
Colour
orange  
black  

Ratings IECEx/ATEX/cUL

Certificate no. (cULus)
E354261  

Guarantee

Time interval
5 years  

Classifications

ETIM 7.0
EC000941  
ETIM 8.0
EC000941  
ETIM 9.0
EC000941  
ETIM 10.0
EC000941  
ECLASS 12.0
27-17-12-02  
ECLASS 13.0
27-17-12-02  
ECLASS 14.0
27-17-12-02  
ECLASS 15.0
27-17-12-02