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

36 52 52 72 72

30-39 42-60

M/H/V 43.9 (1116) 31.7 (806) M 43.9 (1116) 31.7 (806)

276 276 360 360 441 441 509 441 509 603 509 603 603 509 603 603 882 603 801 801 950 882 950

220 220 300 300 402 402 468 402 468 532 468 532 532 468 532 532 804 532 702 702 870 804 870 936 936

108 108 159 159 212 212 294 212 294 345 294 345 345 294 345 345 424 345 371 371 506 424 506 588 588 690

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 2 2 2 2 2 3 3 3

48

H/V

75.0 (1905) 38.1 (969)

54-84

M/H 75.0 (1905) 38.1 (969)

60

V

100 (2540) 44.1 (1121)

100 78-96

M/H 100 (2540) 44.1 (1121)

100

84

V

126 (3207) 50.6 (1286)

123 90-96 123 102-120 123 132-138 123 90-120 123 132-138 123 90-138 145 108-120 145 132-144 145 108-144 145 108-144 170 132-144 170 162-168 170 132-168 170 132-168 245 180-198

M 100 (2540) 44.1 (1121) M 126 (3207) 50.6 (1286) M 153 (3874) 57.1 (1451)

H H V

126 (3207) 50.6 (1286) 153 (3874) 57.1 (1451) 153 (3874) 57.1 (1451)

M 126 (3207) 50.6 (1286) M 153 (3874) 57.1 (1451)

H V

153 (3874) 57.1 (1451) 200 (5080) 82.6 (2099)

M 153 (3874) 57.1 (1451) M 175 (4445) 76.6 (1946)

H V

175 (4445) 76.6 (1946) 226 (5747) 89.1 (2264)

M 200 (5080) 82.6 (2099) M 226 (5747) 89.1 (2264) M 253 (6414) 95.6 (2429)

245 245

216 228

1018 1018 1206

15.0 (381) 15.0 (381) 15.0 (381)

25.2 (640) 25.2 (640) 25.2 (640)

245 180-228 245 180-228

H V

253 (6414) 95.6 (2429) 305 (7748) 109 (2759)

1064

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

Page 53 | October 2023

Page 53 | June 2021