Approximate Dimensions

Class 8606, 8630, 8640 / Refer to Catalog 8600CT9601

Class 8606

Autotransformer

H = Height, W = Width, D = Depth

NEMA Size	Dim.	Open		NEMA Type 1 / 12 Enclosure				NEMA Type 4 Enclosure
		Open		Non-Combo or Combo, with Circuit Breaker		Combo, with Disconnect Switch		Non-Combo or Combo, with Circuit Breaker		Combo, with Disconnect Switch
		in.	mm	in.	mm	in.	mm	in.	mm	in.	mm
2	H	43	1092	52	1320	52	1320	52	1320	52	1320
	W	22	559	25	635	25	635	25	635	25	635
	D	8	203	10	254	10	254	10	254	10	254
3 or 4	H	63	1600	70 ^[1]	1778	70 ^[1]	1778	75 ^[1]	1778	75 ^[1]	1778
	W	28	711	32	813	32	813	32	813	32	813
	D	9	229	16	406	16	406	16	406	16	406
5	H	63	1600	70 ^[1]	1778	90 ^[1]	2286	75 ^[1]	1778	95 ^[1]	2413
	W	28	711	32	813	36	914	32	813	36	914
	D	9	229	16	406	16	406	16	406	16	406
6	H	56	1422	90 ^[1]	2286	90 ^[1]	2286	98 ^[1]	2489	98 ^[1]	2489
	W	30	762	34	864	64	1626	34	864	64	1626
	D	14	354	20	508	24	610	20	508	24	610

Class 8630

Wye-Delta

NEMA Size	Dim.	Open		NEMA Type 1 / 12 Enclosure				NEMA Type 4 Enclosure
		Open		Non-Combo		Combo		Non-Combo		Combo
		in.	mm	in.	mm	in.	mm	in.	mm	in.	mm
1YD or 2YD	H	21	553	25	635	25	635	25	635	—	—
	W	21	553	23	584	23	584	23	584	—	—
	D	7	178	8	203	8	203	8	203	—	—
3YD or 4YD	H	42	1067	48	1219	49	1245	48	1219	49	1245
	W	25	635	28	712	30	762	28	712	30	762
	D	7	178	8	203	11	279	8	203	11	279
5YD or 6YD	H	62	1576	90 ^[1]	2286	90 ^[1]	2286	98 ^[1]	2489	98 ^[1]	2489
	W	29	737	36	914	36	914	36	914	36	914
	D	10	254	16	406	16	406	16	406	16	406

NEMA Size	Dim.	Open		NEMA Type 1 / 12 Enclosure				NEMA Type 4 Enclosure
		Open		Non-Combo		Combo		Non-Combo		Combo
		in.	mm	in.	mm	in.	mm	in.	mm	in.	mm
1YD or 2YD	H	21	553	25	635	25	635	25	635	—	—
	W	21	553	23	584	23	584	23	584	—	—
	D	14	354	16	406	16	406	16	406	—	—
3YD or 4YD	H	42	1067	48	1219	49	1245	48	1219	49	1245
	W	25	635	28	712	30	762	28	712	30	762
	D	14	354	16	406	18	457	16	406	18	457
5YD or 6YD	H	80	2032	90 ^[1]	2286	90 ^[1]	2286	98 ^[1]	2489	98 ^[1]	2489
	W	30	762	36	914	36	914	36	914	36	914
	D	12	305	16	406	16	406	16	406	16	406

Class 8640

Part Winding

NEMA Size	Dim.	Open		Enclosed—NEMA Type 1 / 4 / 12
		Open		Non-Combo		Combo, with Circuit Breaker		Combo, with Disconnect Switch
		in.	mm	in.	mm	in.	mm	in.	mm
1PW or 2PW	H	21	553	25	635	34	853	25	635
	W	21	553	23	584	19	483	23	584
	D	6	152	8	203	11	279	8	203
3PW	H	42	1067	48	1219	44	1118	52	1321
	W	26	660	28	712	30	762	25	635
	D	7	178	8	203	12	305	11	279
4PW	H	42	1067	48	1219	44	1118	78 ^[1]	1981
	W	26	660	28	712	30	762	32	813
	D	7	178	8	203	12	305	16	406
5PW	H	35	889	44	1118	78 ^[1] ^[2]	1981	78 ^[1] ^[2]	1981
	W	22	559	24	610	36	914	36	914
	D	10	254	12	305	16	406	16	406
6PW	H	49	1245	64	1626	—	—	90 ^[1]	2286
	W	24	610	28	712	—	—	64	1626
	D	11	279	16	406	—	—	24	406

Combination Starter Form Reference

Circuit Breaker: Y791, Y7911
Nonfusible Disconnect Switch: Y792, Y7910
Fusible Disconnect Switch: Y793-Y799

Refer to Forms—Reduced Voltage Controllers Only for a complete listing of Forms for combination devices.