What is the Typical Required VA rating on a a control transformer for combination starter ?

Search FAQs

Issue:
Information on the VA rating for the 8502/8536/8538/8539 NEMA Type S Starters.

Product Line:
Contactors and Starters.

Environment:
NEMA Type S Starters

Resolution:
See table below. This can also be seen on table 16.173 on page 16-58 of the Digest 177 or similar information in the current Digest. This sizing can also be used for other 8502 and 8536 based devices.

NEMA Size	Starter Type	Standard Capacity (Form F4T)	Additional Capacity
		Standard Capacity (Form F4T)	50 VA (Form F4T10)	100 VA (Form F4T11)	200 VA (Form F4T12)
		Class 9070 Type [66]
0 & 1	SB & SC	TF100	TF150	TF200	TF300 [67][68]
2	SD	TF100	TF150	TF200	TF300
3	SE	TF150	TF200	TF300	TF500
4	SF	TF300	TF300	TF500	TF500
5	SG	TF100 and 8501XO20	TF100 and 8501XO20	TF150 and 8501XO20	TF300 and 8501XO20
6	SH	EO3S2 is standard	N/A	EO3FS2 and T100	EO3S2 and TF200
7	SJ	EO19S2 is standard	N/A	EO19S2 and TF100	EO3S2 and TF200

[66] Complete the contactor or starter Class and Type with the voltage code.
[67] Requires oversized enclosure. (Size 2 reversing enclosure.)
[68] Available in standard enclosure with Mag-Gard™ circuit breaker and non-fusible disconnect switch. Requires oversized enclosure with thermal-magnetic circuit breakers and fusible
disconnect switches. (Size 2 reversing enclosure.)