EECTECH Discharge Tubes/Surge Arresters 【Two-electrode】
MODEL	DC striking voltage V	Surge striking voltage V (1kv/μS)	Insulation resistance   Ω	Alternating discharge current A (T= times)	Impulse discharge current KA (8/20μS) (T= times)	Inter-electrode capacitance PF
Two-electrode ceramic discharge tubes/surge arresters
ER-70T	70±20	≤800	＞1010	20A 1S 10T	20KA 10T	≤3
ER-90K	90±20	≤900	≥1010	20A 1S 10T	20KA 10T	≤3
ER-120K	120±30	≤900	≥1010	20A 1S 10T	20KA 10T	≤3
ER-230K	230±40	≤900	≥1010	20A 1S 10T	20KA 10T	≤3
ER-250K	250±50	≤900	≥1010	20A 1S 10T	20KA 10T	≤3
ER-300K	300±50	≤1000	≥1010	20A 1S 10T	20KA 10T	≤3
ER-350K	350±70     50	≤1000	≥1010	20A 1S 10T	20KA 10T	≤3
ER-400K	400±70     50	≤1100	≥1010	20A 1S 10T	20KA 10T	≤3
ER-500K	500±80	≤1200	≥1010	20A 1S 10T	20KA 10T	≤3
ER-600K	600±120     90	≤1200	≥1010	20A 1S 10T	20KA 10T	≤3
ER-700K	700±100	≤1400	≥1010	20A 1S 10T	20KA 10T	≤3
ER-800K	800±120	≤1500	≥1010	20A 1S 10T	20KA 10T	≤3
ER-900K	900±140	≤1500	≥1010	20A 1S 10T	20KA 10T	≤3
ER-1000K	1000±120	≤1800	≥1010	20A 1S 10T	20KA 10T	≤3
ER-1600K	1600±300      240	≤2800	≥1010	20A 1S 10T	20KA 10T	≤3
Small two-electrode ceramic discharge tubes/surge arresters
ER-70TA	70±20	≤650	≥5 X 109	5A 1S 5T	5KA 5T	≤3
ER-90TA	90±20	≤800	≥5 X 109	5A 1S 5T	5KA 5T	≤3
ER-120TA	120±30	≤900	≥5 X 109	5A 1S 5T	5KA 5T	≤3
ER-175TA	175±30	≤900	≥5 X 109	5A 1S 5T	5KA 5T	≤3
ER-230TA	230±40	≤900	≥5 X 109	5A 1S 5T	5KA 5T	≤3
ER-250TA	250±50	≤900	≥5 X 109	5A 1S 5T	5KA 5T	≤3
ER-300TA	300±50	≤900	≥5 X 109	5A 1S 5T	5KA 5T	≤3
ER-350TA	350±70	≤1000	≥5 X 109	5A 1S 5T	5KA 5T	≤3
ER-440TA	440±100	≤1100	≥5 X 109	5A 1S 5T	5KA 5T	≤3
ER-600TA	600±150     90	≤1200	≥5 X 109	5A 1S 5T	5KA 5T	≤3
ER-800TA	800±160     120	≤1500	≥5 X 109	5A 1S 5T	5KA 5T	≤3
Ultra-small two-electrode ceramic discharge tubes/surge arresters
ER-90TB	90±20	≤900	≥109	2.5A 1S 5T	2.5KA 5T	≤3
ER-120TB	120±30	≤900	≥109	2.5 A 1S 5T	2.5KA 5T	≤3
ER-175TB	175±30	≤900	≥109	2.5 A 1S 5T	2.5KA 5T	≤3
ER-230TB	230±40	≤900	≥109	2.5 A 1S 5T	2.5KA 5T	≤3
ER-300TB	300±50	≤900	≥109	2.5 A 1S 5T	2.5KA 5T	≤3
ER-400TB	400±80	≤1000	≥109	2.5 A 1S 5T	52.5KA5T	≤3
ER-500TB	500±100	≤1100	≥109	2.5 A 1S 5T	2.5KA 5T	≤3
ER-600TB	600±150     90	≤1200	≥109	2.5 A 1S 5T	2.5KA 5T	≤3

Two-electrode high-voltage discharge tube/surge arresters 【Two-electrode】
MODEL	AC breakdown peak voltage   V	Discharge current Max.  A	Discharge time   ms	Discharge times   T=times	Recovery time S
ER-2500T	2500±300	20	＜100	10 T	＜1
ER-3000T	3000±400	20	＜100	10 T	＜1
ER-3400T	3400±400	20	＜100	10 T	＜1
ER-4000T	4000±600	20	＜100	10 T	＜1