CA01082E_Catalog 30

Products – Porcelain Housed Surge Arresters – MH3/MH4

MH3 & MH4 Physical Characteristics

Power Frequency Withstand Voltage (kV)

Creepage Distance - Inches (mm)

Total Height - Inches (mm)

Lightning Withstand Voltage (kV)

Switching Withstand Voltage (kV)

Grading Ring Height A - Inches (mm)

Grading Ring Diameter B - Inches (mm)

Um (kV)

Ur (kV)

Pollution Level*

Drawing Figure

300

216

M 253 (6414) 95.6 (2429) M 253 (6414) 95.6 (2429) M 279 (7081) 102 (2594)

1018 1018 1112 1206 1206 1527 1527 1206 1527 1809 1459 1527 1621 1715 1809 1715 1715 1809 2130 2130 1965 2070

936 936

588 588 639 690 690 882 882 690 882 800 882 933 984

3 3 3 3 3 4 4 3 4 4 4 4 4 4 4 4 4 4 5 5 4 4

18.0 (457) 15.0 (381) 15.0 (381) 18.0 (457) 15.0 (381) 18.0 (457) 15.0 (381) 18.0 (457) 18.0 (457) 18.0 (457) 35.7 (908) 18.0 (457) 18.0 (457) 18.0 (457) 18.0 (457) 35.7 (908) 18.0 (457) 18.0 (457) 35.7 (908) 18.0 (457) 18.0 (457) 18.0 (457)

40.0 (990) 25.2 (640) 25.2 (640) 40.0 (990) 25.2 (640) 40.0 (990) 25.2 (640) 40.0 (990) 40.0 (990) 40.0 (990) 60.2 (1530) 40.0 (990) 40.0 (990) 40.0 (990) 40.0 (990) 60.2 (1530) 40.0 (990) 40.0 (990) 60.2 (1530) 40.0 (990) 39.0 (990) 39.0 (990)

300 228-240 300 258-264

1000 1064 1064 1404 1404 1064 1404 1596 1338 1404 1468 1532 1596 1532 1532 1596 1936 1936 1424 1500

300

216

H H V V

305 (7748) 109 (2759) 305 (7748) 109 (2759) 379 (9621) 141 (3572) 379 (9621) 141 (3572)

300 228-264

300

216

300 228-264 362 258-288 362 258-288 362 258-288 420 330-336

M 305 (7748) 109 (2759)

H V

379 (9621) 141 (3572) 458 (11622) 160 (4067)

1035

M 353 (8954) 134 (3407) M 379 (9621) 141 (3572) M 405 (10288) 147 (3737) M 431 (10955) 154 (3902) M 458 (11622) 160 (4067)

420

360

420 372-378 420 390-396

420

420

1035

420 330-336 420 360-396

H H H V V H V

431 (10955) 154 (3902) 431 (10955) 154 (3902) 458 (11622) 160 (4067) 531 (13495) 192 (4880) 531 (13495) 192 (4880) 487 (12360) 162 (4123) 516 (13110) 169 (4293)

984 984

420

420

1035 1227 1227 1011 1065

420 330-336 420 360-420

420

420

420 330-420

* M = Medium, H = Heavy, V = Very Heavy

Page 54 | June 2021

Page 54 | October 2023