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Home › Products › Arresters › Distribution › Normal Duty [3kV - 36kV Rated]

Normal Duty [3kV - 36kV Rated]

Rated Voltage kV	MCOV kV	Unit Catalog Number	0.5 μsec 10kA Maximum IR-kV (1)	500 A Switching Surge Maximum IRkV(2)	8/20 Maximum Discharge Voltage - kV
					1.5 kA	3 kA	5 kA	10 kA	20 kA	40 kA
3	2.55	217253	12.5	8.5	9.8	10.3	11.0	12.3	14.3	18.5
6	5.1	217255	25.0	17.0	19.5	20.5	22.0	24.5	28.5	37.0
9	7.65	217258	33.5	23.5	26.0	28.0	30.0	33.0	39.0	50.5
10	8.4	217259	36.0	25.4	27.0	29.5	31.5	36.0	41.5	53.0
12	10.2	217560	42.4	31.3	33.8	36.3	38.5	42.8	49.0	60.9
15	12.7	213263	54.0	39.9	43.1	46.3	49.0	54.4	62.4	78.0
18	15.3	213265	62.8	46.4	50.1	53.8	57.0	63.3	72.6	91.2
21	17.0	213267	68.3	50.5	54.5	58.5	62.0	68.9	79.0	98.3
24	19.5	217570	84.8	62.6	67.6	72.6	77.0	85.6	98.0	121.9
27	22.0	213272	96.4	71.2	76.9	82.6	87.5	97.2	111.4	139.0
30	24.4	213274	104.3	74.5	81.5	88.0	93.5	104.9	120.5	149.1
36	29.0	213279	125.6	92.8	100.2	107.6	114.0	126.7	145.2	176.7

• All Ohio Brass Arresters are fully compliant with ANSI/IEEE C62.11 Standard
• (1) Maximum discharge voltage for a 10-kA impulse current wave which produces a voltage wave cresting in 0.5 μs. This can be used for coordination where front-of-wave sparkover was formerly used.
• (2) Based on a 500A surge of 45-μs time to crest.

Rated Voltage	MCOV	Unit Catalog Number	Height with Insulating Base Bracket	Leakage Distance Terminal to Base	Mounting Clearance (1)		Approx. Net Weights
					Center Line to Center Line	Center Line to Ground	Unit Only	Unit with Insulating Base Bracket	Unit with Insulating Base Bracket and NEMA Bracket
kV	kV		inches	inches	inches	inches	pounds	pounds	pounds
3	2.55	217253	9.3	15.4	4.8	3	2.6	3.5	6.0
6	5.1	217255	9.3	15.4	5	3.2	2.6	3.5	6.0
9	7.65	217258	9.3	15.4	5.6	3.8	2.6	3.5	6.0
10	8.4	217259	9.3	15.4	5.8	4.1	2.6	3.5	6.0
12	10.2	217560	9.3	15.4	7.5	5.7	2.6	3.5	6.0
15	12.7	213263	12.3	25.5	8.5	6.7	4.2	5.2	7.1
18	15.3	213265	12.3	25.5	9.5	7.7	4.2	5.2	7.1
21	17.0	213267	12.3	25.5	10	8.2	4.2	5.2	7.1
24	19.5	217570	14.7	30.8	12	10.2	6.7	7.7	10.7
27	22.0	213272	17.7	40.9	13	11.2	6.7	7.7	10.7
30	24.4	213274	17.7	40.9	13.6	11.8	6.7	7.7	10.7
36	29.0	213279	20.7	51.0	16.2	14.4	8.2	9.2	11.2

• (1) Center line to center line is equivalent to phase-to-phase; center line to ground is equivalent to phase-to-ground. These are recommended minimum clearances only and as such are not intended to take precedence over existing construction codes or specifications.
• For appropriate packed weight, add 0.5 lb. per arrester.