WHITE-RODGERS
DC PRODUCTS
Type 70 and 71
contactors
FEATURES
•
•
•
•
High current capacity control
Isolated or grounded coils
Enclosed in dust-resistant case
Longer steel encasement permits lower heat rise and
more sensitive operation on Type 71
Contacts
• Pole form– SPNO, SPDT
• Material– SPNO-copper or silver
SPDT-copper and silver or all silver
• Termination–
5
/
16
”-24 UNF-2A thread
RATINGS
NO
Cont.
Inrush
80A
300 A
80 A
150 A
50 A
50 A
80A
300 A
80 A
150 A
50 A
50 A
NC
Cont.
60A
60 A
30 A
60A
60 A
30 A
Inrush
100 A
60 A
30 A
100 A
60 A
30 A
ENGINEERING DATA
GENERAL DATA
Dielectric Strength
• 500 Volts
Temperature Range
• -40°F/-40°C to 122°F/50°C
Mechanical Life (no load)
• 250,000 operations
Electrical Life (rated load)
• 100,000 operations
Mounting Position
• Recommended mounting with cap down
Vibration
• 5 g’s vertical and horizontal planes
Weight (approximate)
• Type 70–14.0 oz.
• Type 71–17.0 oz.
Duty Cycle
• Continuous
• Intermittent–10 seconds “on” maximum and
minimum 60 seconds “off”. One minute “on”
maximum and minimum 6 minutes “off”.
Hardware Torque Specification
• Contact Terminal: 45-55 inch-lbs.
• Coil Terminal: 12-18 inch-lbs.
• Mounting Bracket: 100 inch-lbs. max (a
backup wrench must be used to hold the
bottom nut stationary during installation)
Type
70
71
Volts DC
6
12
24 & 36
6
12
24 & 36
Coils
• Voltage–6 VDC through 36 VDC
• Termination–#10-32 UNF-2A thread
• Power (approximate)
Type 70 intermittent 23 watts
Type 70 continuous 9 watts
Type 71 intermittent 25 watts
Type 71 continuous 10 watts
• Connections
1. Two coil terminals isolated from case
2. One coil terminal with ground wire, one coil
terminal isolated from case
3. One coil lead common to NO terminal
marked “BAT” (one terminal)
• Operate (77°F/25°C)
75% of nominal coil voltage; 110% max. safe of
nominal coil voltage
COIL DATA
TYPE 70
TYPE 71
Resistance (Ohms)
Resistance (Ohms)
Int.
Cont.
Int.
Cont.
Volts DC
Volts DC
1.4
3.5
1.5
4.0
6
6
4.9
13.5
6.2
16.0
12
12
13.46
36.0
16.0
37.4
18
18
20.1
57.1
23.9
60.4
24
24
57.1
131.0
60.4
114.0
36
36
St. Louis, Missouri Markham, Ontario
314-553-3600 905-948-3411
www.white-rodgers.com
The Emerson logo is a
trademark and a service mark
of Emerson Electric Co.
R-4003C
1233
TYPE 70/71 PART NUMBERING SYSTEM
7x – x xx x x x - x
Basic Part
Number Series
Type 71 case is
approx. 0.29” longer
than Type 70
Coil Termination
Coil
Voltage/Duty
08 – 6 Volt continuous
09 – 6 Volt intermittent
11 – 12 Volt continuous
12 – 12 Volt intermittent
14 – 18 Volt continuous
15 – 18 Volt intermittent
17 – 24 Volt continuous
18 – 24 Volt intermittent
20 – 36 Volt continuous
21 – 36 Volt intermittent
(15 in-lb torque spec.)
Factory Assigned Specials
(where undefined, contact factory)
Contact
Form
1 – SPNO
3 – SPDT
221 – Isolated coil, all Ag contacts
222 – Coil terminal with ground
wire, all Ag contacts
224 – Isolated coil, Cu NO
and Ag NC contacts
225 – Coil terminal with ground
wire, Cu NO and Ag NC
contacts
226 – Coil common to NO (stud
marked “BAT”), Cu NO
and Ag NC contacts
Not all part number combinations are released. Please contact your Sales Representative for
a list of active part numbers.
APPLICATION NOTES
2 – Hardware loosely
assembled
2B – Customer requested
markings
2C – Customer requested
markings
3 – Customer requested
markings
4 – Customer requested
markings
5 – Hardware bulk packed
5C – Customer requested
markings
5F – Customer requested
markings
7 – No hardware included
• A back-up wrench MUST be used to hold the bottom nut stationary during installation.
• Solenoids applied in battery charging circuits should be protected from higher than rated voltage during charging. The
service life may be affected by this condition and the solenoid may or may not operate the circuit as intended.
• Circuits should be designed to provide safe operation should the solenoid fail in either the open or closed position.
• Special construction options, including a curved bracket, may be available under other part numbers, including 111-
xxxD (short can), 111-xxxE (long can), 5608-x and 878x-x.
SPNO – Isolated Coil
.281 WIDE X .390 LONG SLOT
5/16–UNF–2A
.485 (USABLE)
LENGTH
Coil Terminal to Ground
.281 WIDE X .390 LONG SLOT
5/16–UNF–2A
.485 (USABLE)
LENGTH
#10-32 UNF-2A X .470
W 3.480
2.109
COIL CONNECTION
(ISOLATED)
GROUND
WIRE
2.109
COIL CONNECTION
WITH GROUND WIRE
W 3.480
#10-32 UNF-2A X .470
0.900
(Type 70)
1.196
(Type 71)
.248
.569
H
2.400
1.082
0.900
(Type 70)
1.196
(Type 71)
.248
.569
H
2.400
1.082
L
2.429 (Type 70)
2.725 (Type 71)
CIRCUIT DIAGRAM
L
2.429 (Type 70)
2.725 (Type 71)
CIRCUIT DIAGRAM
Coil Common to Load
.281 WIDE X .390 LONG SLOT
COMMON
TERMINAL
5/16–UNF–2A
.485 (USABLE)
LENGTH
SPDT – Isolated Coil
.281 WIDE X .390 LONG SLOT
5/16–UNF–2A
.485 (USABLE)
LENGTH
.248
W 3.480
2.109
COIL CONNECTION
(COMMON)
2.109
W
3.480
#10–32 UNF–2A
.470 LONG
#10–32 UNF–2A
.470 LONG
.248
0.900
(Type 70)
1.196
(Type 71)
.569
1.082
H
2.400
BAT
0.900
(Type 70)
1.196
(Type 71)
.569
L
3.313 (Type 70)
3.609 (Type 71)
COIL CONNECTION
(COMMON)
1.082
H
2.400
L
2.429 (Type 70)
2.725 (Type 71)
CIRCUIT DIAGRAM
CIRCUIT DIAGRAM
R-4003C
1233
Power technology
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