Reduced Voltage Starters

Class 8606, 8630, 8640

Forms—Reduced Voltage Controllers Only

Reduced Voltage Controllers Only—Classes 8606, 8630, 8640

Factory Modifications

Enclosure
Type

Form

NEMA Size

1
1PW
1 YD

2
2 PW
2 YD

3
3 PW
3 YD

4
4 PW
4 YD

5
5 PW
5 YD

6
6 PW
6 YD

7
7 PW
7 YD

Pilot Devices in Cover
and Control Circuit

Reduced Voltage
Controllers Only

Classes
8606
8630
8640
8647
8650

Push Buttons [1]

Start-Stop

1, 4, 12

A

X

X

X

X

X

X

X

Selector Switches

Hand-Off-Auto

1, 4, 12

C

X

X

X

X

X

X

X

On-Off

1, 4, 12

C6

X

X

X

X

X

X

X

Pilot Lights (specify color) [2]

One light On

1, 4, 12

P

X

X

X

X

X

X

X

Separate Control Circuit [3] [4]

TR coil only (at control voltage)

1, 4, 12

S

N/C

N/C

N/C

N/C

N/C

N/C

N/C

All coils (at control voltage)

1, 4, 12

Y195

N/C

N/C

N/C

N/C

N/C

N/C

N/C

Fused Control Circuit [3] [4] [5] [6]

One fuse

1, 4, 12

F

X

X

X

X

X

N/C [7]

N/C [7]

Two fuses

1, 4, 12

F4

X

X

X

X

X

N/C [7]

N/C [7]

Control Circuit Transformer [3] [4] [5]

Standard Capacity (50 or 60 Hz)

Fuses

Primary

Secondary

2—

0—

1, 4, 12

F4T

X

X

X

X

X

N/C [7]

N/C [7]

2—

1—

1, 4, 12

FF4T

X

X

X

X

X

X

X

2—

0—

1, 4, 12

F4T40

X

X

X

X

X

X

X

2—

1—

1, 4, 12

FF4T40

X

X

X

X

X

X

X

Additional capacity (50 or 60 Hz) [8]

100 VA additional capacity

1, 4, 12

T11

X

X

X

X

X

X

X

200 VA additional capacity

1, 4, 12

T12

X

X

X

X

X

X

X

300 VA additional capacity

1, 4, 12

T13

X

X

X

X

X

X

X

400 VA additional capacity

1, 4, 12

T14

X

X

X

X

X

X

X

500 VA additional capacity

1, 4, 12

T15

X

X

X

X

X

X

X

Substitute nonstandard single primary and/or single secondary

Voltage rating on the control transformer [5]

1, 4, 12

T1[9]

X

X

X

X

X

  —

 —

Selection of Control Circuit Transformers

Voltage
60 Hz (Primary–Secondary)

Code

120–12
120–24
208–120
240–24
240–120
277–120
480–24
480–120
480–240
600–120
Specify

V88
V89
V84
V82
V80
V85
V83
V81
V87
V86
V99

Selection of Control Circuit Transformers

The standard primary and secondary voltages for control circuit transformers are indicated in Selection of Control Circuit Transformers.
To order, select the desired device with the appropriate transformer Form designation. Then convert the previously selected voltage code (V••) to reflect the desired primary/secondary voltage for the transformer. The secondary voltage should equal the previously selected coil voltage of the device. (24 Vac coils for NEMA Sizes 4–7 are not available).

Example:

You have a Class 8606SDG1V02S. The designation V02S means that you need a coil voltage of 120-60/110-50 wired for separate control. You want to add Form FF4T with the transformer voltages at 480 V primary, 120 V secondary. The new, complete Class, Type, Voltage Code, and Form are:


Class

Type

Voltage Code

Form [10]

8606

SDG1

V81

FF4T

Class 8606 Reduced Voltage Starters

Class 8606 Reduced Voltage Starters Only

Factory Modifications

Enclosure
Type

Form

NEMA Size

1

2

3

4

5

6

7

Circuit

Breaker

or

Disconnect

Switch

Molded case thermal magnetic circuit breaker [11]

1

Y791

X

X

X

X

X

X

X

4

Y791

X

X

X

X

X

X

X

12

Y791

X

X

X

X

X

X

X

Nonfusible disconnect switch

1

Y792

X

X

X

X

X

4

Y792

X

X

X

X

X

12

Y792

X

X

X

X

X

Automatic molded case switch

1

Y7910

X

X

4

Y7910

X

X

12

Y7910

X

X

Fusible Disconnect Switch with Fuse Clips [12]

30 A clips

1

Y793

X

X

4

Y793

X

X

12

Y793

X

X

60 A clips

1

Y794

X

X

X

4

Y794

X

X

X

12

Y794

X

X

X

100 A clips

1

Y795

X

X

4

Y795

X

X

12

Y795

X

X

200 A clips

1

Y796

X

X

4

Y796

X

X

12

Y796

X

X

400 A clips

1

Y797

X

X

4

Y797

X

X

12

Y797

X

X

Automatic molded case switch
with 600 A fuse clips

1

Y798

X

4

Y798

X

12

Y798

X

Automatic molded case switch
with fuse clips 1200 A or less

1

Y799

X

4

Y799

X

12

Y799

X

Class 8630 Reduced Voltage Controllers Only[13]

Factory Modifications

Enclosure
Type

Form

NEMA Size

1 YD

2 YD

3 YD

4 YD

5 YD

6 YD

7 YD

Circuit

Breaker

or

Disconnect

Switch

Molded case thermal magnetic circuit breaker [11]

1

Y791

X

X

X

X

X

X

X

4

Y791

X

X

X

X

X

X

X

12

Y791

X

X

X

X

X

X

X

Nonfusible disconnect switch

1

Y792

X

X

X

X

4

Y792

X

X

X

X

12

Y792

X

X

X

X

Atuomatic molded case switch

1

Y7910

X

X

X

4

Y7910

X

X

X

12

Y7910

X

X

X

Fusible Disconnect Switch with Fuse Clips[12]

30 A clips

1

Y793

X

X

4

Y793

X

X

12

Y793

X

X

60 A clips

1

Y794

X

X

4

Y794

X

X

12

Y794

X

X

100 A clips

1

Y795

X

X

4

Y795

X

X

12

Y795

X

X

200 A clips

1

Y796

X

X

4

Y796

X

X

12

Y796

X

X

400 A clips

1

Y797

X

X

4

Y797

X

X

12

Y797

X

X

Automatic molded case switch

with 600 A fuse clips

1

Y798

X

X

4

Y798

X

X

12

Y798

X

X

Automatic molded case switch

with fuse clips 1200 A or less

1

Y799

X

X

4

Y799

X

X

12

Y799

X

X

Class 8640 Reduced Voltage Starters

note

To comply with Section 430-3 of the National Electrical Code®, combination part-winding starters come as follows:

  • Circuit breaker: two thermal-magnetic, adjustable-trip circuit breakers—one for each motor winding. In the smaller controllers that use the FA and KA frames, a single external operating mechanism operates the two circuit breakers simultaneously. In the larger controllers that use the KA and LA frames, each circuit breaker has its own operating mechanism.

  • Nonfusible disconnect switch: a single 3-pole unfused disconnect switch of the proper rating for both windings. The user must provide proper short-circuit protection external to the starter, using only Class J fuses.

  • Fusible disconnect switch: a single unfused disconnect switch with two sets of fuse clips (each set of the rating indicated) to provide short-circuit protection for each winding.

Class 8640 Reduced Voltage Starters Only

Factory Modifications

Enclosure
Type

Form

NEMA Size

1 PW

2 PW

3 PW

4 PW

5 PW

6 PW

Circuit

Breaker

or

Disconnect

Switch

Molded case thermal magnetic circuit breaker [11]

1

Y7911

X

X

X

X

X

4

Y7911

X

X

X

X

X

12

Y7911

X

X

X

X

X

Fusible Disconnect Switch with Fuse Clips [12]

30 A clips (two sets)

1

Y7931

X

X

4

Y7931

X

X

12

Y7931

X

X

60 A clips (two sets)

1

Y7941

X

X

4

Y7941

X

X

12

Y7941

X

X

100 A clips (two sets)

1

Y7951

X

X

X

4

Y7951

X

X

X

12

Y7951

X

X

X

200 A clips (two sets)

1

Y7961

X

X

X

4

Y7961

X

X

X

12

Y7961

X

X

X

400 A clips (two sets)

1

Y7971

X

X

[14]

X

[14]

4

Y7971

X

X

[14]

X

[14]

12

Y7971

X

X

[14]

X

[14]

Automatic molded case switch

with 600 A fuse clips (two sets)

1

Y7920

X

4

Y7920

X

12

Y7920

X

Automatic molded case switch

with fuse clips 601–1200 A or less (two sets)

1

Y7921

X

4

Y7921

X

12

Y7921

X

Reduced Voltage Controllers Only—Classes 8606, 8630, 8640 [15]

Factory Modifications

Enclosure
Type

Form

NEMA Size

1
1PW
1 YD

2
2 PW
2 YD

3
3 PW
3 YD

4
4 PW
4 YD

5
5 PW
5 YD

6
6 PW
6 YD

7
7 PW
7 YD

Overload relays

Substitute 9999SO4 isolated alarm contact on melting alloy overload relay

Substitute 9999SO5 isolated alarm contact on melting alloy overload relay

Any
Any

Y342
Y344


X
X


X
X


X
X


X
X


X
X


X
X


[16]
[16]

Motor Logic™ overload relays (Class 10/20 Selectable) [17] [18]


Any


H30


X


X


X


X


X


X


X

Add for thermal protector Class 8606
Coil transient suppressor, per coil
Addition of terminal blocks (specify wired or unwired).
—Wired, per terminal, each
—Unwired, per terminal, each

1, 4, 12
Any

1, 4, 12
1, 4, 12

Y116
Y145

G56 [19]
G50 [19]


X

X
X

X
X

X
X

X
X

X
X

X
X

X
X

X
X

X
X

X


X
X




X
X

Footnotes

  1. All push buttons are momentary contact.
  2. For pilot light details, refer to the pilot light table in Digest Section 16.
  3. As standard, reduced voltage controllers are supplied with common control. If Form S or T is specified, only the TR coil will be at control voltage. Specify Form Y195 or T40 (ex. Form FF4T40) if all coils must be at control voltage. Refer to Specifications for control circuit arrangements.
  4. Reduced voltage controllers include two control circuit fuses for conductors at line voltage. Additional fusing may be provideded if a fused control circuit transformer or separate control is specified.
  5. See Selection of Control Circuit Transformers.
  6. Must be used with a Form specifying separate control (Ex. Form FS).
  7. Size 6 and 7 controllers come with Form FF4T as standard.
  8. Add Form letters to the standard control transformer (example: for Size 1, Form F4T plus 100 VA becomes F4T11; Form F4T40 plus 100 VA becomes F4T41.).
  9. Must be used in conjunction with a variation of Form F4T (ex.: standard capacity transformer required, 208–24 V; order as Form F4TT1, 208–24 V).
  10. Always list Form numbers in alphabetical order.
  11. Mag-Gard™ circuit breakers are not supplied nor recommended.
  12. Fuses not included.
  13. Wye-Delta motor starters typically have higher current ratings per NEMA Size than full voltage motor starters. Care must be taken in selecting the appropriate short circuit protection. The table in Digest Section 7 will assist in selecting proper protection based on motor full-load current.
  14. Consists of automatic molded case switch with two sets of 400 A fuse clips.
  15. NEMA 7 and 9 enclosures not available with Class 8600 devices.
  16. Size 7 uses a solid-state overload relay. See Class 8536 for complete details.
  17. Motor Logic overload relays are not available on Class 8640 Size 1PW to 4PW starters.
  18. See Motor Logic overload relays in the Full Voltage section in Digest Section 16 for additional Form options of Motor Logic overload relays.
  19. Addition of terminal block 9080CA or 9080GR6 only. The number of circuits is the same as the ending of the Form number. (Example: G505 is a 5–wire terminal block.) Available in groups of 5 only. Order in increments of 5. The number of circuits is the same as the ending of the Form number. (Example: G505 = 5 unwired terminals, G510 is 10 unwired terminals.)

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