Page 1
POLARIZED, MONOSTABLE
SAFETY RELAY WITH
FORCIBLY GUIDED
DOUBLE CONTACTS
SF4D
SF4D
RELAY
53.3
33
16.5
length: 3.0
Tolerance 0.3mm
Weight approx. 47g
SPECIFICATIONS
Contact
Contact configuration (a = normally open / NO,
b = normally closed / NC)
Contact material
Contact resistance (initial at 6V DC, 1A)
Making and breaking capacities (breathing
hole open)
Max. switching voltage
Min. switching voltage / min. switching current
Pick-up / drop-out / bounce time
(approx. values at U
Mechanical life
Coil
Operate / release voltage (% of U
20°C)
Pick-up/nominal power consumption at 20°C
*1
)
nominal
at
nominal
FEATURES
• Relay complies with EN 50205, Type B
• Overvoltage category as per IEC 60664-1 III / 4kV
• Rated voltage
as per IEC 60664-1
basic insulation
4a4b
AgSnO2, with Au flash
30m
6A 250V / 3A 24V
400V
10V / 10mA
18.5 / 7.5 / 3ms
7
ops
10
75% / 15%
280 / 500mW
Polution degree
Coil-contact
Contact-contact
forcibly linked
pair only
all other
contacts
2
inside
outside
400V 400V
250V 250V
400V400V 400V
3
2
inside
250V
250V
Characteristics
Max. switching frequency (without load)
Permissible ambient temperature at nominal
power consumption
Upper temperature limit
Test voltage:
open contact / contact-contact / contact-coil
Insulation resistance at 500V DC (initial)
Shock resistance (11ms) NO/NC
Vibration resistance 10 – 200 Hz (10 – 55 Hz,
amplitude 2 mm)
Degree of protection
Unit weight
Important: Relay characteristics may be influenced by:
• strong external magnetic fields
• magnetic conductive materials near the relay
• narrow top-to-top mounting (printed surface to printed surface)
*2
*2
10Hz
-40°C to +70°C
105°C
2500 / 2500 /
2500V
rms
9
10
30G
10G
IP67 / IP30
*3
47g
Remarks
*1 According to EN 60947-5-1: 1997, table 4 AC15 / DC13
*2 Contact interruption <10s
*3 Breathing hole open
ORDERING INFORMATION
Ex. SF4D DC12 V
Coil voltage (DC)
5, 9, 12, 18, 21
24, 36, 48, 60
Note: Standard packing; Carton: 20 pcs. Case 200 pcs.
ds_61407_en_sf4d: 010611D
Note:
Suitable for most common washing methods except ultrasonic cleaning.
1
Page 2
SF4D
COIL DATA
Part number
Coil nominal voltage
V DC
SF4D-DC5V 5
SF4D-DC9V 9
SF4D-DC12V 12
SF4D-DC18V 18
SF4D-DC21V 21
SF4D-DC24V 24
SF4D-DC36V 36
SF4D-DC48V 48
SF4D-DC60V 60
ELECTRICAL LIFE
Voltage Current Load type Frequency Duty cycle No. of contacts No. of ops.
230V AC 8A AC 1 0.25Hz 25%
250V AC 6A AC 1 0.33Hz 50%
230V AC 6A AC 1 0.33Hz 10%
230V AC 30 / 3A
24V DC 8A DC 1 0.33Hz 10%
24V DC 3A
24V DC 3A L/R = 40ms 0.33Hz 10%
*1 EN 60947-5-1: 1997; table C.1
*2 Breathing hole closed
*3 Breathing hole open
*4 Ambient temperature +70°C
*5 Dielectric strength according to EN61810-1:2004.
Operate voltage
*1
AC 15
*1
DC 13
V DC
3.75
6.75
9.00
13.50
15.75
18.00
27.00
36.00
45.00
Release voltage
V DC
0.75
1.35
1.80
2.70
3.15
3.60
5.40
7.20
9.00
0.33Hz 10%
0.33Hz 10%
Coil resistance
(10%, 20°C)
50 47
162 145
288 252
648 551
882 742
1152 959
2592 2097
4608 3654
7200 5612
*2
4
*3
4*2 / 8
*3
2
*3
1
*3
2
*3
1
*3
1
Coil inductance
(mH)
85,000
100,000
200,000
200,000
200,000
50,000
100,000
*5
*5
*4,*5
*4,*5
*4,*5
*4,*5
*4,*5
REFERENCE DATA
Loads in the range under the curve can be switched safely.
The arc will extinguish before the opposite contact makes.
Coil voltage characteristicsLoad limit curve
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
coil rated
0.8
/ U
coil
0.7
U
0.6
0.5
0.4
0.3
0.2
0.1
-50 -40 -30 -20 -10 0 10 20 807060504030 10090 110
Permissible coil voltage
with contact load of 4 x 6A
(nominal coil resistance)
Average value of pick-up voltage
without previous coil heating
Minor increase due to
temperature compensation
Ambient temperature °C
Average value of drop-out voltage
without previous coil heating
Permissable coil voltages and pick-up and drop-out
characteristics at various ambient temperatures.
Permissible coil
voltage without
contact load
(nominal coil
resistance)
2
ds_61407_en_sf4d: 010611D
Page 3
Contact current characteristics
o
o
o o oo
o o oo
o o oo
o o oo
25
20
15
10
Ucoil = 0%, Load on NC 5 -6
Thermal continuous current I th [A]
5
Ucoil = 100%, Load on NO 7 - 8
Ucoil = 100%, Load on all 4 NO
The curves are determined by
the contact resistance
SF4D
-50 -40 -30 -20 -10 0 10 20 807060504030 10090 110
Ambient temperature [°C]
DIMENSIONS (mm inch)
4 Form A 4 Form B
CAD Data
1.0
.039
5.08
.200
0.30
.012
33±0.5
1.299±.020
7.62
.300
1
2
External dimensions
16±0.5
.630±.020
1.0
12.7
12.712.7
.500.500
53.3±0.5
2.098±.020
1413 1615
65
109
1817 2019
General tolerance: 0.3 .012
.500
.039
3.0±0.5
.118±.020
0.48
.019
87
0.48
.019
1211
0.5
.020
7.62
.300
12.7
.500
7.62
.300
CAD Data
Download from our Web site.
CAD Data
Schematic (Bottom view)
13
o
1
5
+
o
o
9
o o o o
2
17
The contacts are shown in the deenergized condition.
14
o o o
76
11 12
10
18 19
1615
o o o o
8
o o o o
20
PC board pattern (Bottom view)
Grid 2.54
5.68
2.73
APPLICATION NOTES
Actuator
Outer contact
Inner contact
Rotating armature
If required a breathing hole can be made in the cover by removing the nipple.
However be aware that the degree of protection will reduce from IP67 to IP30!
ds_61407_en_sf4d: 010611D
Nipple
7.6
1.4 - typical value for manual insertion
1.6 - typical value for automatic insertion
Tolerance: 0.1 .004
3
Page 4
SF4D
Operation of forcibly guided contacts, Type B
If an outer contact should weld, then the forced operated inner contacts driven by the actuator remain open.
The rotating armature remains free to move.
The unaffected contact pairs can operate normally, i.e. their function to make or break remains unaffected.
Actuator
Outer contact
Inner contact
Rotating armature
If an inner contact should weld, then the movement of the rotating armature is blocked via the actuator.
Open contacts of all four contact pairs remain open.
This arrangement corresponds to a conventional forcibly guided contact operation.
Actuator
Outer contact
Inner contact
Rotating armature
For Cautions for Use, see Relay Technical Information.
4
ds_61407_en_sf4d: 010611D
Loading...