Cooper UltraSIL Polymer-housed VariSTAR IEEE Surge Arresters

Eaton’s Cooper Power series VariSTAR distribution-class surge arresters are part of the UltraSIL polymer-housed surge arrester product line; normal-duty (5 kA), heavy-duty, and riser pole (10 kA) for MV systems to 36 kV

VariSTAR surge arresters are available in normal-duty, heavy-duty, and riser pole classifications and provide superior overvoltage protection for any electric distribution system.

1.Cutaway illustration of VariSTAR distribution-class arrester

2.Commonly applied voltage ratings of VariSTAR arresters

VariSTAR Arresters Dimensions and clearances

Protective characteristics—VariSTAR normal-duty (UNS) arrester

Protective characteristics—VariSTAR heavy-duty (UHS) arrester

Protective characteristics—VariSTAR riser pole (URS) arrester

(1). Catalog numbers—VariSTAR distribution-class surge arresters (Normal Duty)

Arrester rating	With isolator and insulated hanger(Figure 3)	With isolator,insulated hanger and NEMA cross-arm bracket (Figure 4)	With insulated hanger without isolator(Figure 6)	With isolator,insulated hanger, and bracket(Figure 5)
3	UNS03030A1A1A1A	UNS03030A1A1B1A	UNS03030A0A1A1A	UNS03030A1C1C1C
6	UNS06040A1A1A1A	UNS06040A1A1B1A	UNS06040A0A1A1A	UNS06040A1C1C1C
9	UNS09050A1A1A1A	UNS09050A1A1B1A	UNS09050A0A1A1A	UNS09050A1C1C1C
10	UNS10050A1A1A1A	UNS10050A1A1B1A	UNS10050A0A1A1A	UNS10050A1C1C1C
12	UNS12060A1A1A1A	UNS12060A1A1B1A	UNS12060A0A1A1A	UNS12060A1C1C1C
15	UNS15070A1A1A1A	UNS15070A1A1B1A	UNS15070A0A1A1A	UNS15070A1C1C1C
18	UNS18080A1A1A1A	UNS18080A1A1B1A	UNS18080A0A1A1A	UNS18080A1C1C1C
21	UNS21090A1A1A1A	UNS21090A1A1B1A	UNS21090A0A1A1A	UNS21090A1C1C1C
24	UNS24100A1A1A1A	UNS24100A1A1B1A	UNS24100A0A1A1A	UNS24100A1C1C1C
27	UNS27110A1A1A1A	UNS27110A1A1B1A	UNS27110A0A1A1A	UNS27110A1C1C1A
30	UNS30120A1A1A1A	UNS30120A1A1B1A	UNS30120A0A1A1A	UNS30120A1C1C1A
33	UNS33130A1A1A1A	UNS33130A1A1B1A	UNS33130A0A1A1A	UNS33130A1C1C1A
36	UNS36140A1A1A1A	UNS36140A1A1B1A	UNS36140A0A1A1A	UNS36140A1C1C1A

(2). Catalog numbers—VariSTAR distribution-class surge arresters (Heavy Duty)

Arrester rating	With isolator and insulated hanger(Figure 3)	With isolator,insulated hanger and NEMA cross-arm bracket (Figure 4)	With insulated hanger without isolator(Figure 6)	With isolator,insulated hanger, and bracket(Figure 5)
3	UHS03030A1A1A1A	UHS03030A1A1B1A	UHS03030A0A1A1A	UHS03030A1C1C1C
6	UHS06040A1A1A1A	UHS06040A1A1B1A	UHS06040A0A1A1A	UHS06040A1C1C1C
9	UHS09050A1A1A1A	UHS09050A1A1B1A	UHS09050A0A1A1A	UHS09050A1C1C1C
10	UHS10050A1A1A1A	UHS10050A1A1B1A	UHS10050A0A1A1A	UHS10050A1C1C1C
12	UHS12060A1A1A1A	UHS12060A1A1B1A	UHS12060A0A1A1A	UHS12060A1C1C1C
15	UHS15070A1A1A1A	UHS15070A1A1B1A	UHS15070A0A1A1A	UHS15070A1C1C1C
18	UHS18080A1A1A1A	UHS18080A1A1B1A	UHS18080A0A1A1A	UHS18080A1C1C1C
21	UHS21090A1A1A1A	UHS21090A1A1B1A	UHS21090A0A1A1A	UHS21090A1C1C1C
24	UHS24100A1A1A1A	UHS24100A1A1B1A	UHS24100A0A1A1A	UHS24100A1C1C1C
27	UHS27110A1A1A1A	UHS27110A1A1B1A	UHS27110A0A1A1A	UHS27110A1C1C1A
30	UHS30120A1A1A1A	UHS30120A1A1B1A	UHS30120A0A1A1A	UHS30120A1C1C1A
33	UHS33130A1A1A1A	UHS33130A1A1B1A	UHS33130A0A1A1A	UHS33130A1C1C1A
36	UHS36140A1A1A1A	UHS36140A1A1B1A	UHS36140A0A1A1A	UHS36140A1C1C1A

(3). Catalog numbers—VariSTAR distribution-class surge arresters (Riser Pole)

Arrester rating	With isolator and insulated hanger(Figure 3)	With isolator,insulated hanger and NEMA cross-arm bracket (Figure 4)	With insulated hanger without isolator(Figure 6)	With isolator,insulated hanger, and bracket(Figure 5)
3	URS03030A1A1A1A	URS03030A1A1B1A	URS03030A0A1A1A	URS03030A1C1C1C
6	URS06040A1A1A1A	URS06040A1A1B1A	URS06040A0A1A1A	URS06040A1C1C1C
9	URS09050A1A1A1A	URS09050A1A1B1A	URS09050A0A1A1A	URS09050A1C1C1C
10	URS10050A1A1A1A	URS10050A1A1B1A	URS10050A0A1A1A	URS10050A1C1C1C
12	URS12060A1A1A1A	URS12060A1A1B1A	URS12060A0A1A1A	URS12060A1C1C1C
15	URS15070A1A1A1A	URS15070A1A1B1A	URS15070A0A1A1A	URS15070A1C1C1C
18	URS18080A1A1A1A	URS18080A1A1B1A	URS18080A0A1A1A	URS18080A1C1C1C
21	URS21090A1A1A1A	URS21090A1A1B1A	URS21090A0A1A1A	URS21090A1C1C1C
24	URS24100A1A1A1A	URS24100A1A1B1A	URS24100A0A1A1A	URS24100A1C1C1C
27	URS27110A1A1A1A	URS27110A1A1B1A	URS27110A0A1A1A	URS27110A1C1C1A
30	URS30120A1A1A1A	URS30120A1A1B1A	URS30120A0A1A1A	URS30120A1C1C1A
33	URS33130A1A1A1A	URS33130A1A1B1A	URS33130A0A1A1A	URS33130A1C1C1A
36	URS36140A1A1A1A	URS36140A1A1B1A	URS36140A0A1A1A	URS36140A1C1C1A

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