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
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