AUTOMOTIVE POWER
RELAYS — SMALL SIZE,
LIGHT WEIGHT AND
COMPLETELY WATER TIGHT
CA-RELAYS
FEATURES
1. Small size and light weight
For space saving, the outside dimensions
of the main body are reduced to be 21.5
mm (length) × 14.4 mm (width) × 37 mm
(height) (.846 × .567 × 1.457 inch). and
the weight is also reduced to be approx.
19 g .67 oz (Direct coupling 1 Form A,
1 Form B type)
2. Water tightness
Since the relays comply with the water
tightness standards, JIS D 0203, water
and dust will not enter the relay even if it is
mounted in the engine area.
3. Low operaing power (1.4W) type is
available (1 Form A, 1 Form B)
4. Since the terminal arrangement
complies with JIS D5011 B4-M1, commercial connectors are available for
these types of relays.
SPECIFICATIONS
Contact
Type
Arrangement
Initial contact resistance, max.
(By voltage drop 6 V DC 1A)
Contact material
Contact voltage drop, max.
Nominal switching capacity
(resistive load)
Max. switching voltage
Rating
Max. switching current
Max. carrying current
Nominal operating power
Mechanical (at 120 cpm)
20 A
Expected
(1.4 W, 1.8 W type)
life (min.
Electrical
operations)
30 A
(1.8 W type)
1 Form A
12 V DC
1 Form B
1 Form C
24 V DC
1 Form C
50 m ohm
silver alloy
0.3 V
After electrical life test,
0.3 V
0.4 V
0.4 V
by voltage drop
After electrical life test, After electrical life test, After electrical life test,
12 V DC 20 A
by voltage drop
by voltage drop
by voltage drop
(1.4 W type),
12 V DC 20 A
12 V DC 20 A
24 V DC 10 A
12 V DC 30 A
(1.8 W type)
20 A 12 V DC
(1.4 W type)
10 A 24 V DC
20 A 12 V DC
30 A 12 V DC
(ON: 2s, OFF: 2s)
(1.8 W type)
16 V
15 V
30 V
120 A (1.4 W type)
120 A
100 A
50 A (Inrush current)
150 A (1.8 W type)
20 A continuous
(1.4 W type)
20 A continuous
20 A continuous
10 A continuous
30 A for 1 min
(1.8 W type)
1.4 W / 1.8 W
1.8 W
5×105
106
105
(ON: 2s, OFF: 2s)
2×104
(ON: 3s, OFF: 15s)
105 (ON 2s, OFF 2s)
105
383
CA
Characteristics (at 20°C 68°F )
Type
12 V DC
24 V DC
15 cpm 1.4 W type: at nominal load
15 cpm (at nominal load)
1.8 W type: at 20 A
Min. 10 Ω at 500 V DC
500 V rms for 1 min.
500 V rms for 1 min.
(
Max. operating speed
Initial insulation resistance
Between open contacts
Between contacts and coil
Operate time*2 (at nominal voltage)
Initial breakdown
voltage*1
)
Release time (without diode)*2
(at nominal voltage)
Functional
Shock resistance
Functional*5
Destructive
Conditions for operation,
Ambient
transport and storage*6
temp.
(Not freezing and condensing
Humidity
low temperature)
Water-proof standard
Unit weight
Max. 10 ms
Max. 10 ms at 20°C
Max. 10 ms
Min. 200 m/s2 {20 G}
Destructive*4
Vibration resistance
Max. 10 ms at 20°C
Min. 100 m/s2 {10 G}
Min. 1,000 m/s2 {100 G}
Rubber bracket A type: Min. 100 m/s2 {10 G}, 50 to 500Hz
Direct coupling type or Screw-mounting type: Min. 44.1 m/s2 {4.5 G}, 10 to 100 Hz
Rubber bracket A type: Min. 100m/s2 {10 G},50 to 500Hz
Direct coupling type or Screw-mounting type: Min. 44.1 m/s2 {4.5 G}, 10 to 100 Hz
Min. 100 m/s2 {10 G}*3
Min. 44.1 m/s2 {4.5 G},
10 to 100Hz
Min. 44.1 m/s2 {4.5 G},
10 to 500Hz
–30°C to +80°C –22°F to +176°F
5 to 85% R.H.
Plastic sealed type: JIS DO203S2, Dust cover type: JIS DO203R2
JIS DO203S2
Rubber bracket A type : 23 g .81 oz
Direct coupling type or Screw-mounting type:
31 g 1.09 oz
19 g .67 oz
Electrical life (min. operation)
Motor load
Halogen lamp load
(operating frequency ON: 2 s, OFF: 2 s) (operating frequency ON: 1 s, OFF: 14 s)
105, 20 A 12 V DC
105, 20 A 12 V DC
105, 20 A 12 V DC
105, 20 A 12 V DC
105, 10 A 24 V DC
105, 6 A 24 V DC
Nominal coil voltage, V DC
1 Form A, 1 Form B
12
12
24
1 Form C
Remarks
*4 Half-wave pulse of sine wave: 6ms
*5 Detection time: 10µs
*6 Refer to 5. Conditions for operation, transport and storage mentioned in
AMBIENT ENVIRONMENT (Page 61)
* Specifications will vary with foreign standards certification ratings.
*1 Detection current: 10 mA
*2 Excluding contact bounce time
*3 Half-wave pulse of sine wave: 11ms; detection time: 10µs
ORDERING INFORMATION
CA
Contact
arrangement
1a: 1 Form A
1b: 1 Form B
1 : 1 Form C
1a
Protective construction
Nil: Plastic sealed type
F: Dust cover type
F
S
12 V
Nominal operating power
A
5
Coil voltage
(DC)
Mounting method
Nil: Standard type (1.8 W)
12 V
A: Rubber bracket A type
S: Low operating power type (1.4 W) 24 V (1 Form C only) A: (1 Form A, 1 Form B)
(1 Form A, 1 Form B)
N: Screw mounting type
C: Direct coupling type
Classification by type
Nil: 1 Form C
5: 1 Form A or
1 Form B
Notes: 1. Type with resistor/diode inside are available as options. Please consulf our sales office.
2. Standard packing: Carton: 20 pcs. Case: 200 pcs.
COIL DATA
1) Standard type
Contact
arrangement
1 Form A
1 Form B
1 Form C
384
Mounting type
Plastic sealed
type
Dust cover type
Nominal Pick-up voltage,
voltage,
V DC (max.)
V DC
(at 20°C 68°F)
Drop-out
voltage, V DC
(min.)
(at 20°C 68°F)
Nominal operating current,
mA (±10%)
(at 20°C 68°F)
Coil resistance,
Ω (±10%)
(at 20°C 68°F)
Nominal
operating
power, mW
(at 20°C 68°F)
Usable
voltage
range, V
DC
Rabber bracket A CA1a-12V-A-5
CA1aF-12V-A-5
12
8
0.6 to 6
150
80
1.8
10 to 16
Screw-mounting
CA1a-12V-N-5
CA1aF-12V-N-5
12
8
0.6 to 6
150
80
1.8
10 to 16
Direct coupling
10 to 16
CA1a-12V-C-5
CA1aF-12V-C-5
12
8
0.6 to 6
150
80
1.8
Rabber bracket A CA1b-12V-A-5
CA1bF-12V-A-5
12
8
0.6 to 6
150
80
1.8
10 to 16
Screw-mounting
CA1b-12V-N-5
CA1bF-12V-N-5
12
8
0.6 to 6
150
80
1.8
10 to 16
Direct coupling
CA1b-12V-C-5
CA1bF-12V-C-5
12
8
0.6 to 6
150
80
1.8
10 to 16
Screw-mounting
CA1-DC12V-N
–
12
8
0.6
150
80
1.8
10 to 15
Direct coupling
CA1-DC12V-C
–
12
8
0.6
150
80
1.8
10 to 15
Screw-mounting
CA1-DC24V-N
–
24
16
1.2
75
320
1.8
20 to 30
Direct coupling
CA1-DC24V-C
–
24
16
1.2
75
320
1.8
20 to 30
CA
2) Low operating power type
Contact
arrangement
1 Form A
1 Form B
Drop-out
voltage, V DC
(min.)
(at 20°C 68°F)
Nominal operating current,
mA (±10%)
(at 20°C 68°F)
Coil resistance,
Ω (±10%) (at
20°C 68°F)
Nominal
operating
power, mW
(at 20°C 68°F)
Usable
voltage
range, V
DC
8
0.6 to 6
120
100
1.4
10 to 16
12
8
0.6 to 6
120
100
1.4
10 to 16
12
8
0.6 to 6
120
100
1.4
10 to 16
CA1bFS-12V-A-5
12
8
0.6 to 6
120
100
1.4
10 to 16
CA1bS-12V-N-5
CA1bFS-12V-N-5
12
8
0.6 to 6
120
100
1.4
10 to 16
CA1bS-12V-C-5
CA1bFS-12V-C-5
12
8
0.6 to 6
120
100
1.4
10 to 16
Nominal Pick-up voltage,
voltage,
V DC (max.)
V DC
(at 20°C 68°F)
Plastic sealed
type
Dust cover type
Rabber bracket A CA1aS-12V-A-5
CA1aFS-12V-A-5
12
Screw-mounting
CA1aS-12V-N-5
CA1aFS-12V-N-5
Direct coupling
CA1aS-12V-C-5
CA1aFS-12V-C-5
Rabber bracket A CA1bS-12V-A-5
Screw-mounting
Direct coupling
Mounting type
mm inch
DIMENSIONS
1. 1 Form A/1 Form B
Rubber bracket A type
SCHEMATIC (Bottom View)
21.5
.846
14.4
.567
2.5
10 .098
.394
1 Form A
1 Form B
15
.591
37
1.457
Including diode type, including load type also available.
17.4
.685
19.5
.768
9
.354
Sealed with
epoxy resin
Including load
(1 Form A)
5.5
.217
Including diode
(1 Form C)
15.4
.606
12.4
.488
1.5
.059
2
.079
17
.669
21.5
.846
2. 1 Form A/1 Form B
Screw-mounting type
6.5 +0.3
–0 dia. hole
.256 +.012
dia.
–0
0.8
.031
2.4
.094
6
.236
R10
Dimension:
Max. 1mm .039 inch:
1 to 3mm .039 to .118 inch:
Min. 3mm .118 inch:
14.4
.567
14
.551
3 .118
2 .079
General tolerance
±0.1 ±.004
±0.2 ±.008
±0.3 ±.012
SCHEMATIC (Bottom View)
1 Form A
1 Form B
17.5
.689
7
.276
Including diode type, including load type also available.
37
1.457
21.5 .846
Sealed with
epoxy resin
19.5 .768
9
.354
17.4
.685
Including load
(1 Form A)
5.5
.217
Including diode
(1 Form C)
15.4
.606
12.4
.488
6 .236
0.8
.031 2.4
.094
Dimension:
Max. 1mm .039 inch:
1 to 3mm .039 to .118 inch:
Min. 3mm .118 inch:
General tolerance
±0.1 ±.004
±0.2 ±.008
±0.3 ±.012
385
CA
3. 1 Form A/1 Form B
Direct coupling type
mm inch
21.5
.846
14.4
.567
SCHEMATIC (Bottom View)
1 Form A
1 Form B
37
1.457
Sealed with
epoxy resin
19.5 .768
9
.354
Including diode type, including load type also available.
17.4
.685
5.5
.217
15.4
.606
12.4
.488
6 .236
Including load
(1 Form A)
0.8
.031 2.4
.094
Dimension:
Max. 1mm .039 inch:
1 to 3mm .039 to .118 inch:
Min. 3mm .118 inch:
4. 1 Form C
Screw-mounting type
Including diode
(1 Form C)
General tolerance
±0.1 ±.004
±0.2 ±.008
±0.3 ±.012
SCHEMATIC (Bottom View)
6.6 dia. hole
.260 dia.
14
.551
R10
4
.157
20
.787
12
.472
Including diode type, including load type also available.
59
28 2.323
1.102
40
1.575
31.2 1.228
28.4 1.118
23.4
.921
0.8
.031
6
.236
9
9
.354 .354
1 Form C
2
.079
Including load
(1 Form C)
19.4
.764
Including diode
(1 Form A)
5.5
.217
11.4 12.2
.449 .480
2.4
.094
Sealed with
epoxy resin
Dimension:
Max. 1mm .039 inch:
1 to 3mm .039 to .118 inch:
Min. 3mm .118 inch:
5. 1 Form C
Direct coupling type
General tolerance
±0.1 ±.004
±0.2 ±.008
±0.3 ±.012
SCHEMATIC (Bottom View)
1 Form C
28
1.102
40
1.575
Including diode type, including load type also available.
31.2 1.228
28.4 1.118
23.4
.921
0.8
.031
6
.236
9
9
.354 .354
19.4
.764
5.5
.217
11.4 12.2
.449 .480
2.4
.094
Sealed with
epoxy resin
Including load
(1 Form C)
Dimension:
Max. 1mm .039 inch:
1 to 3mm .039 to .118 inch:
Min. 3mm .118 inch:
386
General tolerance
±0.1 ±.004
±0.2 ±.008
±0.3 ±.012
Including diode
(1 Form A)
CA
REFERENCE DATA
1. Coil temperature rise
2. Electrical life test (Motor load)
Tested sample: CA1aS-12V-N-5, 5 pcs.
Point measured: Inside the coil
Contact carrying current: 20A
Ambient temperature: Room temperature,
85°C 185°F
Tested sample: CA1a-12V-N-5, 5 pcs.
Load: Steady 30A, Inrush 150A, 12V DC
Operate frequency: ON 3s, OFF 15s
Ambient temperature: Room temperature
140
Temperature rise, °C
120
100
85°C
185°F
80
60
40
Pick-up and drop-out voltage, V
10
Room
temperature
Contact welding: 0 times
Miscontact: 0 times
Pick-up voltage
8
Max.
X
6
Min.
4
Drop-out voltage
Max.
X
Min.
2
20
0
12
14
16
Coil applied voltage, V
0
0
2
No. of operations, ×104
For Cautions for use, see Relay Technical Information (Page 48 to 76).
9/1/2000
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Ltd.
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