CA
AUTOMOTIVE POWER
RELAYS — SMALL SIZE,
LIGHT WEIGHT
RoHS compliant
CA RELAYS
FEATURES
TYPICAL APPLICATIONS
• 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)
• Low operating power (1.4W) type is
available (1 Form A, 1 Form B)
• Since the terminal arrangement
complies with JIS D5011 B4-M1,
commercial connectors are available
for these types of relays.
• Superior inrush characteristics
Despite its small size, 120A (max. 0.1 s)
capacity has been achieved by using
contacts that are good at withstanding
inrush currents and because of an
ingenious contacting mechanism.
(1 Form A and 1 Form B)
• Motorcycles and automobiles
Motorcycle cell motors, car air
conditioners, halogen lamps, etc.
• Agricultural equipment
• Battery equipped devices such as
conveyance vehicles
ORDERING INFORMATION
CA
Contact arrangement
1a: 1 Form A
1b: 1 Form B
1: 1 Form C
Protective construction
Nil: Sealed type
F: Dust cover type
Nominal operating power
Nil: Standard type (1.8 W)
S: Low operating power type (1.4 W) (1 Form A, 1 Form B)
Protective element
Nil: None (Standard type)
R: With resistor inside
Coil voltage (DC)
12 V, 24 V (1 Form C only)
Mounting method
A: Rubber bracket A type (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
ASCTB219E 201203-T1
Panasonic Corporation
Automation Controls Business Unit
industrial.panasonic.com/ac/e/
CA
TYPES
Contact arrangement
Coil voltage
1 Form A
12 V DC
1 Form B
12 V DC
Mounting type
Rubber bracket A
Screw-mounting
Direct coupling
Rubber bracket A
Screw-mounting
Direct coupling
Screw-mounting
Direct coupling
Screw-mounting
Direct coupling
12 V DC
1 Form C
24 V DC
Standard type
Sealed type
Dust cover type
Part No.
Part No.
CA1a-12V-A-5
CA1aF-12V-A-5
CA1a-12V-N-5
CA1aF-12V-N-5
CA1a-12V-C-5
CA1aF-12V-C-5
CA1b-12V-A-5
CA1bF-12V-A-5
CA1b-12V-N-5
CA1bF-12V-N-5
CA1b-12V-C-5
CA1bF-12V-C-5
CA1-12V-N
–
CA1-12V-C
–
CA1-24V-N
–
CA1-24V-C
–
Low operating power type
Sealed type
Dust cover type
Part No.
Part No.
CA1aS-12V-A-5
CA1aFS-12V-A-5
CA1aS-12V-N-5
CA1aFS-12V-N-5
CA1aS-12V-C-5
CA1aFS-12V-C-5
CA1bS-12V-A-5
CA1bFS-12V-A-5
CA1bS-12V-N-5
CA1bFS-12V-N-5
CA1bS-12V-C-5
CA1bFS-12V-C-5
–
–
–
–
–
–
–
–
Standard packing: Carton: 20 pcs. Case: 200 pcs.
Note: Please use “CA∗∗R-∗-∗-∗ or CA∗∗SR-∗-∗-∗” built-in resistor type. (Asterisks “ ∗ ” should be filled in from ORDERING INFORMATION.)
RATING
1. Coil data
Standard type
1 Form A and 1 Form B
Low operating power type
1 Form A and 1 Form B
1 Form C
Nominal coil
voltage
Pick-up voltage
(at 20°C 68°F)
Drop-out
voltage
(at 20°C 68°F)
Nominal operating
current
[±10%] (at 20°C 68°F)
Coil resistance
[±10%] (at 20°C 68°F)
Nominal
operating power
Usable voltage
range
12 V DC
Max. 8 V DC
0.6 to 6 V DC
150 mA
80Ω
1.8 W
10 to 16V DC
12 V DC
Max. 8 V DC
0.6 to 6 V DC
120 mA
100Ω
1.4 W
10 to 16V DC
12 V DC
24 V DC
Max. 8 V DC
Max. 16 V DC
Min. 0.6 V DC
Min. 1.2 V DC
150 mA
75 mA
80Ω
320Ω
1.8 W
1.8 W
10 to 15V DC
20 to 30V DC
Note: Other pick-up voltage types are also available. Please contact us for details.
2. Specifications
1) 12 V DC type
Characteristics
Item
Arrangement
Contact resistance (Initial)
Contact
Contact voltage drop
Contact material
Nominal switching capacity (resistive load)
Rating
Electrical
characteristics
Max. carrying current
(at coil applied voltage 14 V DC, 80°C 176°F)
Nominal operating power
Min. switching capacity (resistive load)*1
Insulation resistance (Initial)
Between open contacts
Breakdown
voltage (Initial) Between contacts and coil
Operate time (at 20°C 68°F)
Release time (at 20°C 68°F)
Shock
resistance
Functional
Vibration
resistance
Expected life
Conditions
Functional
Destructive
Mechanical
characteristics
Destructive
Electrical (at nominal switching capacity)
Mechanical
Conditions for operation, transport and
storage*2
Max. operating speed
Water-proof
standard
Specifications
1 Form B type
1 Form C type
1 Form B
1 Form C
Typ 3mΩ (By voltage drop 6V DC 1A)
Max. 0.3 V [(after electrical life test, by
Max. 0.3 V
Max. 0.4 V
voltage drop 12 V DC 20 A (1.4 W type),
(after electrical life test, by
(after electrical life test, by
12 V DC 30 A (1.8 W type)]
voltage drop 12 V DC 20 A)
voltage drop 12 V DC 20 A)
Ag alloy (Cadmium free)
20 A 12V DC (1.4 W type)
20 A 12 V DC
30 A 12V DC (1.8 W type)
20 A continuous (1.4 W type)
20 A continuous
20 A continuous
30 A for 1 min. (1.8 W type)
1.4 W/1.8 W
1.8 W
1 A 12V DC
Min. 10 MΩ (at 500V DC)
Min. 10 MΩ (at 500V DC)
500 Vrms for 1 min. (Detection current: 10mA)
500 Vrms for 1 min. (Detection current: 10mA)
Max. 10ms (at nominal voltage) (excluding contact bounce time) (Initial)
Max. 10ms (at nominal voltage) (excluding contact bounce time) (Initial)
Min. 200 m/s2 {20G}
Min. 100 m/s2 {10G}
(Half-wave pulse of sine wave: 11ms;
(Half-wave pulse of sine wave: 11ms; detection time: 10µs)
detection time: 10µs)
Min. 1,000 m/s2 {100G} (Half-wave pulse of sine wave: 6ms)
Rubber bracket A type: 50 Hz to 500 Hz, Min. 100 m/s2 {10G}
Screw-mounting and direct coupling type: 33 Hz, Min. 44.1 m/s2 {4.5G} (Detection time: 10µs)
Rubber bracket A type: 50 Hz to 500 Hz, Min. 100 m/s2 {10G}
Screw-mounting and direct coupling type: 33 Hz, Min. 44.1 m/s2 {4.5G},
Time of vibration for each direction; X, Y direction: 2 hours, Z direction: 4 hours
Min. 105 (operating frequency: 2s ON,
2s OFF) (1.4 W and 1.8 W type at 20 A)
Min. 105 (operating frequency: 2s ON, 2s OFF)
Min. 2 × 104 (operating frequency: 3s
ON, 15s OFF) (1.8 W type at 30 A)
Min. 106 (at 120 cpm)
Min. 5 × 105 (at 120 cpm)
Ambient temperature: –30°C to +80°C –22°F to +176°F,
Humidity: 5% R.H. to 85% R.H. (Not freezing and condensing at low temperature)
15 cpm (1.4 W type: at nominal load,
15 cpm (at nominal switching capacity)
1.8 W type: at 20 A)
1 Form A type
1 Form A
Water-proof standard
Sealed type: JIS D 0203 S2, Dust cover type: JIS D 0203 R2
Rubber bracket A type: 23 g .81 oz,
Screw-mounting and direct coupling type: 19 g .67 oz
Mass
31 g 1.09 oz
Notes: *1. This value can change due to the switching frequency, environmental conditions, and desired reliability level, therefore it is recommended to check this with the
actual load.
*2. The upper operation ambient temperature limit is the maximum temperature that can satisfy the coil temperature rise value. Please refer to “Usage ambient
condition” in CAUTIONS FOR USE OF AUTOMOTIVE RELAYS.
Panasonic Corporation
Automation Controls Business Unit
industrial.panasonic.com/ac/e/
ASCTB219E 201203-T1
CA
2) 24 V DC type
Characteristics
Specifications
1 Form C type
Item
Arrangement
Contact resistance (Initial)
Contact voltage drop
Contact material
Nominal switching capacity (resistive load)
(operating frequency: 2s ON, 2s OFF)
Max. carrying current
Nominal operating power
Min. switching capacity (resistive load)*1
Contact
Rating
Electrical
characteristics
Mechanical
characteristics
1 Form C
Typ 3mΩ (By voltage drop 6V DC 1A)
Max. 0.4 V (after electrical life test, by voltage drop 24 V DC 10 A)
Ag alloy (Cadmium free)
10 A 24V DC
10 A continuous (at coil applied voltage 28 V DC, 80°C 176°F)
1.8 W
1 A 24V DC
Insulation resistance (Initial)
Min. 10 MΩ (at 500V DC)
Between open contacts
Between contacts and coil
Operate time (at nominal voltage) (at 20°C 68°F)
Release time (at nominal voltage) (at 20°C 68°F)
Functional
Shock resistance
Destructive
Functional
Vibration resistance
Destructive
Max. operating speed
500 Vrms for 1 min. (Detection current: 10mA)
500 Vrms for 1 min. (Detection current: 10mA)
Max. 10ms (excluding contact bounce time) (Initial)
Max. 10ms (excluding contact bounce time) (Initial)
Min. 100 m/s2 {10G} (Half-wave pulse of sine wave: 11ms; detection time: 10µs)
Min. 1,000 m/s2 {100G} (Half-wave pulse of sine wave: 6ms)
33 Hz, Min. 44.1 m/s2 {4.5G} (Detection time: 10µs)
33 Hz, Min. 44.1 m/s2 {4.5G},
Time of vibration for each direction; X, Y direction: 2 hours, Z direction: 4 hours
Min. 105 (operating frequency: 2s ON, 2s OFF)
Min. 5 × 105 (at 120 cpm)
Ambient temperature: –30°C to +80°C –22°F to +176°F,
Humidity: 5% R.H. to 85% R.H. (Not freezing and condensing at low temperature)
15 cpm (nominal switching capacity)
Water-proof standard
JIS D 0203 S2
Breakdown voltage
(Initial)
Electrical (at nominal switching capacity)
Mechanical
Expected life
Conditions for operation, transport and storage*2
Conditions
Water-proof
standard
Mass
31 g 1.09 oz
Notes: *1. This value can change due to the switching frequency, environmental conditions, and desired reliability level, therefore it is recommended to check this with the
actual load.
*2. The upper operation ambient temperature limit is the maximum temperature that can satisfy the coil temperature rise value. Please refer to “Usage ambient
condition” in CAUTIONS FOR USE OF AUTOMOTIVE RELAYS.
Electrical life
Motor load
(operating frequency ON: 2 s, OFF: 2 s)
Min. 105, 20 A 12 V DC
Min. 105, 20 A 12 V DC
Min. 105, 10 A 24 V DC
Nominal coil voltage
1 Form A and 1 Form B type
12 V DC
12 V DC
24 V DC
1 Form C type
Halogen lamp load
(operating frequency ON: 1 s, OFF: 14 s)
Min. 105, 20 A 12 V DC
Min. 105, 20 A 12 V DC
Min. 105, 6 A 24 V DC
REFERENCE DATA
1. Coil temperature rise
Samples: CA1aS-12V-N-5, 5pcs.
Measured portion: Inside the coil
Contact carrying current: 20A
Ambient temperature: Room temperature, 85°C
185°F
2. Max. switching capability (Resistive load,
initial)
120
100
85°C
185°F
80
60
40
40
Coil applied voltage, VDC
Room
temperature
Switching voltage, VDC
Temperature rise, °C
(N.O. side Room temperature)
60
140
3. Ambient temperature and operating voltage
range
50
40
30
20
35
30
25
Operation range
20
15
10
20
10
0
0
12
14
16
Coil applied voltage, V
ASCTB219E 201203-T1
Panasonic Corporation
5
0
10
20
30
40
Switching current, A
50
Automation Controls Business Unit
0
−40 −30 −20
0
Pick-up voltage
(Cold start)
20 40 60 8085 100 120
Ambient temperature, °C
industrial.panasonic.com/ac/e/
CA
4. Ambient temperature characteristics
(Cold start)
5. Distribution of pick-up and drop-out voltage
6. Operate and release time characteristics
Quantity: 50pcs.
Sample: CA1a-12V-N-5, 10pcs.
Samples: CA1bS-12V-N-5
60
50
Pick-up voltage
8
7
Drop-out voltage
6
5
4
Operate and release time, ms
9
25
Pick-up voltage
Drop-out voltage
10
Quantity, n
Pick-up and drop-out voltage, V
11
40
30
20
3
2
20
15
10
Operate time
5
10
Release time
1
0
−30
0
80
20
Ambient temperature, °C
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5
0
6
8
10
12
14
Max.
X
Min.
Max.
X
Min.
16
Coil applied voltage, %V
Voltage, V
7-(1). Electrical life test (Motor load)
Sample: CA1a-12V-C, 3pcs.
Load: Inrush current: 63A, steady current: 23A
Blower fan motor actual load (motor free)
Operating frequency: ON 2s, OFF 2s
Ambient temperature: Room temperature
Load current waveform
Change of pick-up and drop-out voltage
Change of contact resistance
Load: Inrush current: 63A, steady current: 23A,
10A
500ms
10
9
8
7
Pick-up voltage
6
Max.
X
Min.
5
4
Drop-out voltage
3
Max.
X
Min.
2
Contact resistance, mΩ
Pick-up and drop-out voltage, V
10
8
6
Max.
4
X
Min.
2
1
0
0
10
0
20
No. of operations, × 10
0
10
20
No. of operations, × 104
4
7-(2). Electrical life test (Lamp load)
Sample: CA1a-12V-C, 3pcs.
Load: 60Wx4, Inrush current: 110A, steady current: 20A
Halogen lamp actual load
Operating frequency: ON 1s, OFF 14s
Ambient temperature: Room temperature
Load current waveform
Change of pick-up and drop-out voltage
Change of contact resistance
Load: Inrush current: 110A, steady current: 20A,
20A
10
10
9
9
8
7
6
Pick-up voltage
5
Max.
X
Min.
4
3
Drop-out voltage
2
Max.
X
Min.
0
10
20
No. of operations, × 104
Panasonic Corporation
8
7
6
5
4
3
Max.
X
Min.
2
1
1
0
Contact resistance, mΩ
Pick-up and drop-out voltage, V
200ms
Automation Controls Business Unit
0
0
10
20
No. of operations, × 104
industrial.panasonic.com/ac/e/
ASCTB219E 201203-T1
CA
DIMENSIONS (mm inch)
The CAD data of the products with a
1. 1 Form A/1 Form B
Rubber bracket A type
CAD Data
mark can be downloaded from: http://industrial.panasonic.com/ac/e/
External dimensions
CAD Data
21.5
.846
14.4
.567
Schematic (Bottom View)
2.5
10 .098
.394
1 Form A
1 Form B
15
.591
37
1.457
Note: Including resistor type also available.
17.4
.685
19.5
.768
9
.354
Including resistor
(1 Form A)
5.5
.217
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
CAD Data
0.8
.031
2.4
.094
6
.236
Dimension:
Max. 1mm .039 inch:
1 to 3mm .039 to .118 inch:
Min. 3mm .118 inch:
External dimensions
6.5 +0.3
–0 dia. hole
.256 +.012
dia.
–0
R10
14.4
.567
14
.551
General tolerance
±0.1 ±.004
±0.2 ±.008
±0.3 ±.012
Schematic (Bottom View)
1 Form A
3 .118
2 .079
1 Form B
17.5
.689
7
.276
Note: Including resistor type also available.
37
1.457
21.5 .846
19.5 .768
9
.354
5.5
.217
15.4
.606
12.4
.488
6 .236
ASCTB219E 201203-T1
Including resistor
(1 Form A)
17.4
.685
0.8
.031 2.4
.094
Panasonic Corporation
Dimension:
Max. 1mm .039 inch:
1 to 3mm .039 to .118 inch:
Min. 3mm .118 inch:
Automation Controls Business Unit
General tolerance
±0.1 ±.004
±0.2 ±.008
±0.3 ±.012
industrial.panasonic.com/ac/e/
CA
3. 1 Form A/1 Form B
Direct coupling type
External dimensions
CAD Data
21.5
.846
Schematic (Bottom View)
14.4
.567
1 Form A
1 Form B
37
1.457
Note: Including resistor type also available.
17.4
.685
19.5 .768
9
.354
5.5
.217
Including resistor
(1 Form A)
15.4
.606
12.4
.488
0.8
.031 2.4
.094
6 .236
4. 1 Form C
Screw-mounting type
CAD Data
Dimension:
Max. 1mm .039 inch:
1 to 3mm .039 to .118 inch:
Min. 3mm .118 inch:
External dimensions
6.6 dia. hole
.260 dia.
R10
14
.551
4
.157
Schematic (Bottom View)
2
.079
Note: Including resistor type also available.
59
28 2.323
1.102
40
1.575
28.4 1.118
23.4
.921
0.8
.031
6
.236
5. 1 Form C
Direct coupling type
1 Form C
20
.787
12
.472
31.2 1.228
General tolerance
±0.1 ±.004
±0.2 ±.008
±0.3 ±.012
Including resistor
19.4
.764
5.5
.217
11.4 12.2
.449 .480
2.4
.094
Dimension:
Max. 1mm .039 inch:
1 to 3mm .039 to .118 inch:
Min. 3mm .118 inch:
9
9
.354 .354
External dimensions
General tolerance
±0.1 ±.004
±0.2 ±.008
±0.3 ±.012
Schematic (Bottom View)
CAD Data
1 Form C
28
1.102
40
1.575
Note: Including resistor type also available.
31.2 1.228
28.4 1.118
23.4
.921
0.8
.031
6
.236
19.4
.764
5.5
.217
Including resistor
11.4 12.2
.449 .480
2.4
.094
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
For Cautions for Use, see Relay Technical Information.
Panasonic Corporation
Automation Controls Business Unit
industrial.panasonic.com/ac/e/
ASCTB219E 201203-T1