Full Voltage Vacuum Contactors and Starters

Class 8502 Type W Vacuum Contactors

Application Data

Vacuum Contactor, Class 8502 Type WF

File E78351

CCN NLDX2

LR75167, 75168

Class 3211-04

Electrical Ratings

Characteristic	Size 4	Size 5	Size 6
Maximum Motor hp at:
200 V	40	75	150
230 V	50	100	200
380 V	75	150	300
460 V	100	200	400
575 V	100	200	400
3–Phase Capacitor Switching—KVAR
230 V	40	80	160
460 V	80	160	320
575 V	100	200	400
Transformer Switching—KVA 3 Phase, 3-Pole Coil Data
240 V	23	47	94
480 V	47	94	188
600 V	59	117	234
Coil Data
Inrush VA	300	600	1450
Sealed VA	30	20	32
Sealed Watts	6	20	30
Pick-up Volts	70% of rated coil voltage
Drop-out Volts	50% of rated coil voltage
Pick-up Time (ms)	18-22	24-32	24-32
Drop-out Time (ms)	90-120	96-100	96-100
Additional Electrical Characteristics
Number of Poles	3	3	3
Max. Voltage Rating	600	600	600
Enclosed Ampere Rating	135	270	540
Max. Closing Current Max.	1600	3000	6000
Interrupting Current	1600	3000	6000
Short Time Current (RMS):
• 1 second	2400	4500	9000
• 2 seconds	1600	3000	6000
Dielectric Strength, Volts Max. Allowable Interrupting Impulse Voltage, VA (1 x 40 ms)	5375	5375	5375

Auxiliary Contact Units

Class 8502 Devices	Maximum Auxiliary Contact Units
Size 4	3
Size 5	4
Size 6	4

Terminals

Size	Power Terminals Wire Range*	Control Terminals Wire Range*
4	12 – 4/0	16–12 AWG
5 Solid or stranded copper wire.*	One 0 AWG – 500 kcmil per phase	16–12 AWG
6Solid or stranded copper wire.*	Two 0 AWG – 500 kcmil per phase	16–12 AWG

General Information

Class 8502 Type W non-reversing vacuum contactors are used to switch capacitors, transformers and electric motors where overload protection is separately provided. Type W vacuum contactors are designed for operation at 600 V, 50/60 Hz.

By design, these contactors are well suited for heavy-duty applications in harsh environments. The power contacts are sealed in ceramic tubes, called vacuum interrupters or vacuum bottles, where the air has been evacuated. Arc quenchers are not required because any arc formed between opening contacts is not sustained due to the presence of the vacuum. The arc is extinguished when the current crosses zero after the contacts are opened, therefore the arc typically does not survive more than one half cycle. There is one vacuum interrupter or bottle per pole, therefore a three pole contactor has three vacuum interrupters or bottles. The power contacts are not affected by ambient conditions or contamination. This provides for long life and reliable operation in harsh applications.

Auxiliary Contacts - Vacuum Contactors

An auxiliary contact block, Class 9999 Type WX11, with one normally-open contact and normally-closed contact is used with the Size 4, 5, and 6 vacuum contactors.

Auxiliary Contact Units - Vacuum Contactors

Auxiliary contact units can be added in the field. Auxiliary Contact Units shows the maximum number of units that may be added to a given size contactor (in addition to the coil auxiliary contact).

NOTE: In Class 8502—Full Voltage, 3–Pole Vacuum Contactors, replace the three bullets (●●●) in the catalog number with the coil voltage code. Refer to the standard coil voltage codes listed in Coil Voltage Codes.

Class 8502—Full Voltage, 3–Pole Vacuum Contactors

NEMA Size	Enclosed Ampere Rating	Locked Rotor Current (A)	Motor Voltage	Max. Hp	Open Style
NEMA Size	Enclosed Ampere Rating	Locked Rotor Current (A)	Motor Voltage	Max. Hp	Type
4	135	1080	200	40	WFO3●●●
			230	50
			460	100
			575	100
5	270	2160	200	75	WGO3●●●
			230	100
			460	200
			575	200
6	540	4320	200	150	WHO3●●●
			230	200
			460	400
			575	400

Class 9998—Replacement Coils for Class 8502 and 8702 Vacuum Contactors (Includes Rectifier)

Size	Type	Poles	Class and Type	Suffix Number (Complete Coil Number Consists of Class and Type Followed by Suffix Number)
Size	Type	Poles	Class and Type	120 V 110 V	240 V 220 V	480 V 440 V	600 V 550 V
4	WF	3	9998WF	120	240	480	600
5	WG	3	9998WG
6	WH	3	9998WH

Class 9999—Vacuum Contactor Kits

Kit Description		For Use With		Class 9999 Type
Kit Description		Type	Size	Class 9999 Type
Auxiliary Contacts, Non-Convertible 1-N.O. & 1-N.C. Isolated Contacts		WF, WG	4, 5	WX11
		WH	6	WX11
Coil Circuit Auxiliary Contacts	1-N.O. & 1-N.C. Isolated Contacts, Delayed Break 1-N.C. Isolated Contact	WF	4	WCX11
Coil Circuit Auxiliary Contacts		WG, WH	5, 6	WLX01
Lug Kits (include 6 lugs)		WG	5	LUW5
Lug Kits (include 6 lugs)		WH	6	LUW6

Altitude

The vacuum contactor is designed to tolerate normal barometric pressure variances up to 6600 ft above sea level. If the contactor is to be used above 6600 ft above sea level, please consult the factory.

Termination Means

The Size 4 vacuum contactor is supplied with line and load side lugs. The Size 5 and 6 vacuum contactors are supplied without line and load side lugs. Class 9999 Type LUW5 and LUW6 lug kits are available for the Size 5 and 6 contactors. These kits include six lugs and the necessary mounting hardware.

Dimensional Diagrams—Class 8502 Type W Vacuum Contactors

Class 8502 Type WF

Class 8502 Type WG

Class 8502 Type WH

Class 8502 Type V Vacuum Contactors

General Information

Class 8502 Type VF

The Class 8502 Type V vacuum contactor is a 3-pole device rated 1500 V that meets UL508 (1.5 kV) and CSA standards. Vacuum technology offers long life and low maintenance in a compact, lightweight design. The contactor is suitable for contaminated atmospheres because the main contacts are sealed in vacuum bottles. In addition, since gravity is not used to assist contactor operation, the Class 8502 contactor can be mounted in any plane without special modifications. Type V vacuum contactors are designed for the control of inductive or non-inductive loads at voltages from 200–1500 Vac.

For How to Order Information, see Catalog Interpretation, Type S Starters.

NOTE: In Class 8502—Full Voltage 3 Pole Vacuum Contactors, replace the three bullets (●●●) in the catalog number with the coil voltage code. Refer to the standard coil voltage codes listed in Coil Voltage Codes.

Class 8502—Full Voltage 3 Pole Vacuum Contactors

NEMA Size	Enclosed Ampere Rating	Locked Rotor Current (A)	Motor Voltage	Max. Hp	Open Style Type
4	160	1080	200	50	VFO3●●●
			230	60
			460	125
			575	150
			800	200
			1000	250
			1500	400
5	320	2160	200	100	VGO3●●●
			230	125
			460	250
			575	300
			800	400
			1000	—
			1500	800
6	540	4320	200	150	VHO3●●●
			230	200
			460	400
			575	400
			800	—
			1000	—
			1500	1300

Class 9998—Replacement Coils for Class 8502/8702
(contains rectifier)

Size	Type	Poles	Class and Type	Suffix (the complete coil number consists of the Class, Type, and suffix)
Size	Type	Poles	Class and Type	110/120 V	220/240 V	440/480 V	550/600 V
4	VF	3	9998WF	120	240	480	600
5	VG	3	9998WG	120	240	480	600
6	VH	3	9998WH	120	240	480	600

Class 9999—Vacuum Starter Kits

For Use With		Kit Description	Class 9999 Type
Type	Size	Kit Description	Class 9999 Type
VF, VG	4, 5	Auxiliary Contacts, Non-Convertible 1 N.O. & 1 N.C. Isolated Contacts	WX11
VH	6		WX11
VF	4	Coil Circuit Auxiliary Contacts 1 N.O. & 1 N.C. Isolated Contacts, Delayed Break 1 N.C. Isolated Contact	WCX11
VG, VH	5, 6		WLX01
VG	5	Lug Kits, 6 lugs included	LUW5
VH	6	Lug Kits, 6 lugs included	LUW6

Dimensional Diagrams—Class 8502 Type V Vacuum Contactors

Class 8502 Type VF Size 4

Class 8502 Type VG Size 5	Class 8502 Type VH Size 6

Class 8536 Type W Vacuum Starters

General Information

Class 8536 Type W non-reversing vacuum starters are used to switch electric motors where overload protection is not separately provided.

Type W vacuum starters are designed for operation at 600 V, 50/60 Hz. Starters are available exclusively with Motor Logic™ solid-state overload relay (SSOLR), Class 10/20 selectable.

For How to Order Information, see Catalog Interpretation, Type S Starters and How to Order.

NOTE:

In Class 8536—Full Voltage Vacuum Starters, replace the three bullets (●●●) in the catalog number with the coil voltage code. Refer to the standard coil voltage codes listed in Coil Voltage Codes.

Class 8536—Full Voltage Vacuum Starters

NEMA Size	Enclosed Ampere Rating	Locked Rotor Current (A)	Motor Voltage	Max. Hp	Open Style
NEMA Size	Enclosed Ampere Rating	Locked Rotor Current (A)	Motor Voltage	Max. Hp	Type
4	135	1080	200	40	WFO3●●●
			230	50
			460	100
			575	100
5	270	2160	200	75	WGO3●●●
			230	100
			460	200
			575	200
6	540	4320	200	150	WHO3●●●
			230	200
			460	400
			575	400

Class 9998—Replacement Coils for Class 8536 Vacuum Starters

Size	Type	Poles	Class and Type	Suffix Number (Complete Coil Number Consists of Class and Type Followed by Suffix Number)
Size	Type	Poles	Class and Type	120 V 110 V	240 V 220 V	480 V 440 V	600 V 550 V
4	WF	All	9998WF	120	240	480	600
5	WG		9998WG	120	240	480	600
6	WH		9998WH	120	240	480	600

Class 9999—Vacuum Starter Kits

For Use With		Kit Description	Class 9999 Type
Type	Size	Kit Description	Class 9999 Type
WF, WG	4, 5	Auxiliary Contacts, Non-Convertible 1 N.O. & 1 N.C. Isolated Contacts	WX11
WH	6		WX11
WF	4	Coil Circuit Auxiliary Contacts 1 N.O. & 1 N.C. Isolated Contacts, Delayed Break 1 N.C. Isolated Contact	WCX11
WG, WH	5, 6		WLX01
WG	5	Lug Kits (6) lugs included	LUW5

Full Voltage Vacuum Contactors and Starters

Class 8502 Type W Vacuum Contactors

Application Data

Vacuum Contactor, Class 8502 Type WF

Electrical Ratings

Auxiliary Contact Units

Terminals

General Information

Auxiliary Contacts - Vacuum Contactors

Auxiliary Contact Units - Vacuum Contactors

Class 8502—Full Voltage, 3–Pole Vacuum Contactors

Class 9998—Replacement Coils for Class 8502 and 8702 Vacuum Contactors (Includes Rectifier)

Class 9999—Vacuum Contactor Kits

Altitude

Termination Means

Dimensional Diagrams—Class 8502 Type W Vacuum Contactors

Class 8502 Type WF

Class 8502 Type WG

Class 8502 Type WH

Class 8502 Type V Vacuum Contactors

General Information

Class 8502 Type VF

Class 8502—Full Voltage 3 Pole Vacuum Contactors

Class 9998—Replacement Coils for Class 8502/8702 (contains rectifier)

Class 9999—Vacuum Starter Kits

Dimensional Diagrams—Class 8502 Type V Vacuum Contactors

Class 8536 Type W Vacuum Starters

General Information

Class 8536—Full Voltage Vacuum Starters

Class 9998—Replacement Coils for Class 8536 Vacuum Starters

Class 9999—Vacuum Starter Kits

Dimensional Diagrams—Class 8536 Type W Vacuum Starters

Class 9998—Replacement Coils for Class 8502/8702
(contains rectifier)