AUTOMOTIVE POWER
RELAYS — SMALL SIZE,
LIGHT WEIGHT AND
COMPLETELY WATER TIGHT
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.
CA-RELAYS
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, com-
mercial 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
1 Form A
12 V DC
1 Form B
50 m ohm
silver alloy
0.3 V
After electrical life test,
0.3 V
0.4 V
by voltage drop
After electrical life test, After electrical life test,
12 V DC 20 A
by voltage drop
by voltage drop
(1.4 W type),
12 V DC 20 A
12 V DC 20 A
12 V DC 30 A
(1.8 W type)
20 A 12 V DC
(1.4 W type)
20 A 12 V DC
30 A 12 V DC
(1.8 W type)
16 V
15 V
120 A (1.4 W type)
120 A
150 A (1.8 W type)
20 A continuous
(1.4 W type)
20 A continuous
30 A for 1 min
(1.8 W type)
1.4 W / 1.8 W
10
10
(ON: 2s, OFF: 2s)
5
6
1 Form C
24 V DC
1 Form C
Contact voltage drop, max.
0.4 V
After electrical life test,
by voltage drop
24 V DC 10 A
Nominal switching capacity
(resistive load)
Max. switching voltage
Rating
Max. switching current
10 A 24 V DC
(ON: 2s, OFF: 2s)
30 V
50 A (Inrush current)
100 A
Max. carrying current
Nominal operating power
Expected
life (min.
operations)
Mechanical (at 120 cpm)
20 A
(1.4 W, 1.8 W type)
Electrical
30 A
(1.8 W type)
20 A continuous
1.8 W
5
×
10
5
10 A continuous
2
×
10
4
(ON: 3s, OFF: 15s)
10
5
(ON 2s, OFF 2s)
10
5
383
CA
Characteristics (at 20
°
C
68
°
F
)
Type
Max. operating speed
Initial insulation resistance
Initial breakdown Between open contacts
voltage*
1
Between contacts and coil
Operate time* (at nominal voltage)
2
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. 10 ms at 20
°
C
Max. 10 ms at 20
°
C
Max. 10 ms
Max. 10 ms
Min. 100 m/s
2
{10 G}*
3
Min. 44.1 m/s
2
{4.5 G},
10 to 100Hz
Min. 44.1 m/s
2
{4.5 G},
10 to 500Hz
Release time (without diode)*
2
(at nominal voltage)
Shock resistance
Functional
Destructive*
4
Functional*
5
Vibration resistance
Destructive
Conditions for operation,
Ambient
transport and storage*
6
temp.
(Not freezing and condensing
Humidity
low temperature)
Water-proof standard
Unit weight
Min. 100 m/s
2
{10 G}
Min. 1,000 m/s
2
{100 G}
Rubber bracket A type: Min. 100 m/s
2
{10 G}, 50 to 500Hz
Direct coupling type or Screw-mounting type: Min. 44.1 m/s
2
{4.5 G}, 10 to 100 Hz
Min. 200 m/s
2
{20 G}
Rubber bracket A type: Min. 100m/s
2
{10 G},50 to 500Hz
Direct coupling type or Screw-mounting type: Min. 44.1 m/s
2
{4.5 G}, 10 to 100 Hz
–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
Rubber bracket A type : 23 g .81
oz
Direct coupling type or Screw-mounting type:
19 g .67
oz
JIS DO203S2
31 g
1.09 oz
Electrical life (min. operation)
Nominal coil voltage, V DC
1 Form A, 1 Form B
1 Form C
Remarks
* 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: 10
µ
s
*
4
Half-wave pulse of sine wave: 6ms
*
5
Detection time: 10
µ
s
*
6
Refer to 5. Conditions for operation, transport and storage mentioned in
AMBIENT ENVIRONMENT (Page 61)
12
12
24
Motor load
Halogen lamp load
(operating frequency ON: 2 s, OFF: 2 s) (operating frequency ON: 1 s, OFF: 14 s)
10
5
, 20 A 12 V DC
10
5
, 20 A 12 V DC
10
5
, 20 A 12 V DC
10
5
, 10 A 24 V DC
10
5
, 20 A 12 V DC
10
5
, 6 A 24 V DC
ORDERING INFORMATION
CA
Contact
arrangement
1a: 1 Form A
1b: 1 Form B
1 : 1 Form C
1a
F
S
12 V
A
Coil voltage
(DC)
5
Protective construction
Nil: Plastic sealed type
F: Dust cover type
Nominal operating power
Mounting method
Classification by type
Nil: 1 Form C
5: 1 Form A or
1 Form B
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
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
Mounting type
Plastic sealed
type
Dust cover type
CA1aF-12V-A-5
CA1aF-12V-N-5
CA1aF-12V-C-5
CA1bF-12V-A-5
CA1bF-12V-N-5
CA1bF-12V-C-5
–
–
–
–
Nominal Pick-up voltage,
voltage,
V DC (max.)
V DC
(at 20
°
C
68
°
F)
12
12
12
12
12
12
12
12
24
24
8
8
8
8
8
8
8
8
16
16
Drop-out
voltage, V DC
(min.)
(at 20
°
C
68
°
F)
0.6 to 6
0.6 to 6
0.6 to 6
0.6 to 6
0.6 to 6
0.6 to 6
0.6
0.6
1.2
1.2
Nominal oper-
ating current,
mA (
±
10%)
(at 20
°
C
68
°
F)
150
150
150
150
150
150
150
150
75
75
Coil resistance,
Ω
(
±
10%)
(at 20
°
C
68
°
F)
80
80
80
80
80
80
80
80
320
320
Nominal
operating
power, mW
(at 20
°
C
68
°
F)
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
Usable
voltage
range, V
DC
10 to 16
10 to 16
10 to 16
10 to 16
10 to 16
10 to 16
10 to 15
10 to 15
20 to 30
20 to 30
Rabber bracket A CA1a-12V-A-5
1 Form A
Screw-mounting
Direct coupling
1 Form B
Screw-mounting
Direct coupling
Screw-mounting
1 Form C
Direct coupling
Screw-mounting
Direct coupling
CA1a-12V-N-5
CA1a-12V-C-5
CA1b-12V-N-5
CA1b-12V-C-5
CA1-DC12V-N
CA1-DC12V-C
CA1-DC24V-N
CA1-DC24V-C
Rabber bracket A CA1b-12V-A-5
384
CA
2) Low operating power type
Contact
arrangement
Mounting type
Plastic sealed
type
Dust cover type
CA1aFS-12V-A-5
CA1aFS-12V-N-5
CA1aFS-12V-C-5
CA1bFS-12V-A-5
CA1bFS-12V-N-5
CA1bFS-12V-C-5
Nominal Pick-up voltage,
voltage,
V DC (max.)
V DC
(at 20
°
C
68
°
F)
12
12
12
12
12
12
8
8
8
8
8
8
Drop-out
voltage, V DC
(min.)
(at 20
°
C
68
°
F)
0.6 to 6
0.6 to 6
0.6 to 6
0.6 to 6
0.6 to 6
0.6 to 6
Nominal oper-
ating current,
mA (
±
10%)
(at 20
°
C
68
°
F)
120
120
120
120
120
120
Coil resistance,
Ω
(
±
10%) (at
20
°
C
68
°
F)
100
100
100
100
100
100
Nominal
operating
power, mW
(at 20
°
C
68
°
F)
1.4
1.4
1.4
1.4
1.4
1.4
Usable
voltage
range, V
DC
10 to 16
10 to 16
10 to 16
10 to 16
10 to 16
10 to 16
Rabber bracket A CA1aS-12V-A-5
1 Form A
Screw-mounting
Direct coupling
1 Form B
Screw-mounting
Direct coupling
CA1aS-12V-N-5
CA1aS-12V-C-5
CA1bS-12V-N-5
CA1bS-12V-C-5
Rabber bracket A CA1bS-12V-A-5
DIMENSIONS
1. 1 Form A/1 Form B
Rubber bracket A type
21.5
.846
14.4
.567
10
.394
mm
inch
SCHEMATIC (Bottom View)
2.5
.098
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
5.5
.217
15.4
.606
12.4
.488
Including load
(1 Form A)
Including diode
(1 Form C)
1.5
.059
2
.079
17
.669
21.5
.846
0.8
.031
2.4
.094
6
.236
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
2. 1 Form A/1 Form B
Screw-mounting type
6.5
+0.3
dia. hole
–0
.256
+.012
dia.
–0
14
.551
R10
14.4
.567
3
.118
2
.079
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
5.5
.217
15.4
.606
12.4
.488
0.8
.031
2.4
.094
17.4
.685
Including load
(1 Form A)
Including diode
(1 Form C)
6
.236
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
17.4
.685
5.5
.217
15.4
.606
12.4
.488
Including diode type, including load type also available.
6
.236
0.8
.031
2.4
.094
Including load
(1 Form A)
Including diode
(1 Form C)
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
4. 1 Form C
Screw-mounting type
SCHEMATIC (Bottom View)
6.6 dia. hole
.260 dia.
14
.551
R10
4
.157
2
.079
20
.787
Including diode type, including load type also available.
1 Form C
12
.472
59
28
2.323
1.102
40
1.575
31.2
1.228
28.4
1.118
23.4
.921
0.8
.031
19.4
.764
5.5
.217
11.4 12.2
.449 .480
2.4
.094
Sealed with
epoxy resin
Including load
(1 Form C)
Including diode
(1 Form A)
6
.236
9
9
.354 .354
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
5. 1 Form C
Direct coupling type
28
1.102
40
1.575
SCHEMATIC (Bottom View)
1 Form C
Including diode type, including load type also available.
31.2
1.228
28.4
1.118
23.4
.921
0.8
.031
19.4
.764
5.5
.217
11.4 12.2
.449 .480
2.4
.094
Sealed with
epoxy resin
Including load
(1 Form C)
Including diode
(1 Form A)
6
.236
9
9
.354 .354
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
386
CA
REFERENCE DATA
1. Coil temperature rise
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
140
120
Temperature rise,
°C
100
80
60
40
20
0
12
14
16
Coil applied voltage, V
0
2. Electrical life test (Motor load)
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
10
Pick-up and drop-out voltage, V
Room
temperature
Contact welding: 0 times
Miscontact: 0 times
8
Pick-up voltage
Max.
X
85°C
185°F
6
Min.
4
Drop-out voltage
Max.
2
X
Min.
0
2
No. of operations,
×10
4
For Cautions for use, see Relay Technical Information (Page 48 to 76).
9/1/2000
All Rights Reserved, © Copyright Matsushita Electric Works,
387
Ltd.
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