Automotive Relays
CB RELAYS
Product Catalog
2022.4
Automotive Relays
CB
RELAYS
Mini-ISO Automotive Relay
FEATURES
< Protective construction >
Flux tight/Sealed
This relay has an Mini-ISO (International Organization
for Standardization) terminal arrangement.
Compact and high capacity
Features heat-resistant type
Built-in resistor type is also available.
26
22
25
22
26
TYPICAL APPLICATIONS
Automobiles
Cell motors, Air compressor, ABS, EPS, etc.
Construction equipment
Agricultural equipment, Conveyor, etc.
25
( Unit: mm )
ORDERING INFORMATION (PART NO. : Ordering part number for Japanese market)
ACB
Protective construction / Heat-resistant of types
2: Flux tight / Standard
3: Sealed / Standard
5: Flux tight / Heat-resistant
6: Sealed / Heat-resistant
Contact arrangement / Contact rating
1: 1 Form C / Standard
3: 1 Form A / Standard
8: 1 Form A / High contact capacity
Rated coil voltage (DC)
1: 12 V
2: 24 V
Protective element
0: None
2: With resistor inside
Mounting classification
1: PC board type
2: Plug-in type
4: Bracket type
ORDERING INFORMATION (TYPE NO. : Ordering part number for non Japanese market)
CB
Contact rating
Nil: Standard
H: High contact capacity
Contact arrangement
1a: 1 Form A
1: 1 Form C
Heat-resistant of types
Nil: Standard
T: Heat-resistant
Protective construction
Nil: Sealed
F: Flux tight
Mounting classification
Nil: Plug-in type
P: PC board type
M: Bracket type
Rated coil voltage (DC)
12 V, 24 V
Protective element
Nil: None
R: With resistor inside
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ASCTB220E 202204
Automotive Relays CB RELAYS
TYPES
" Type No. " is ordering part number for non Japanese market. " Part No. " is ordering part number for Japanese market.
Contact
arrangement
High heat-resistant type
Rated
coil
voltage
PC board
type
12 V DC CB1a-P-12V
ACB33101 CB1aF-P-12V
24 V DC CB1a-P-24V
ACB33102 CB1aF-P-24V
Plug-in
type
12 V DC CB1a-12V
Bracket
type
Sealed
ACB36101 CB1aF-T-P-12V
ACB35101
ACB32102 CB1a-T-P-24V
ACB36102 CB1aF-T-P-24V
ACB35102
ACB33201 CB1aF-12V
ACB32201 CB1a-T-12V
ACB36201 CB1aF-T-12V
ACB35201
24 V DC CB1a-24V
ACB33202 CB1aF-24V
ACB32202 CB1a-T-24V
ACB36202 CB1aF-T-24V
ACB35202
12 V DC CB1a-M-12V
ACB33401 CB1aF-M-12V
ACB32401 CB1a-T-M-12V
ACB36401 CB1aF-T-M-12V
ACB35401
24 V DC CB1a-M-24V
ACB33402 CB1aF-M-24V
ACB32402 CB1a-T-M-24V
ACB36402 CB1aF-T-M-24V
ACB35402
12 V DC CB1-P-12V
ACB13101 CB1F-P-12V
ACB12101 CB1-T-P-12V
ACB16101 CB1F-T-P-12V
ACB15101
24 V DC CB1-P-24V
ACB13102 CB1F-P-24V
ACB12102 CB1-T-P-24V
ACB16102 CB1F-T-P-24V
ACB15102
Plug-in
type
12 V DC CB1-12V
ACB13201 CB1F-12V
ACB12201 CB1-T-12V
ACB16201 CB1F-T-12V
ACB15201
24 V DC CB1-24V
ACB13202 CB1F-24V
ACB12202 CB1-T-24V
ACB16202 CB1F-T-24V
ACB15202
Bracket
type
12 V DC CB1-M-12V
ACB13401 CB1F-M-12V
ACB12401 CB1-T-M-12V
ACB16401 CB1F-T-M-12V
ACB15401
24 V DC CB1-M-24V
ACB13402 CB1F-M-24V
ACB12402 CB1-T-M-24V
ACB16402 CB1F-T-M-24V
ACB15402
12 V DC CB1aH-P-12V
ACB83101 CB1aHF-P-12V ACB82101 CB1aH-T-P-12V ACB86101 CB1aHF-T-P-12V ACB85101
PC board
type
Type No.
Part No.
Type No.
Packing
Flux tight
ACB32101 CB1a-T-P-12V
1 Form C
Part No.
Sealed
Part No.
PC board
type
Type No.
Flux tight
Type No.
1 Form A
1 Form A
High
contact
capacity
Standard type
Mounting
classification
Part No.
24 V DC CB1aH-P-24V
ACB83102 CB1aHF-P-24V ACB82102 CB1aH-T-P-24V ACB86102 CB1aHF-T-P-24V ACB85102
Plug-in
type
12 V DC CB1aH-12V
ACB83201 CB1aHF-12V
ACB82201 CB1aH-T-12V
ACB86201 CB1aHF-T-12V
ACB85201
24 V DC CB1aH-24V
ACB83202 CB1aHF-24V
ACB82202 CB1aH-T-24V
ACB86202 CB1aHF-T-24V
ACB85202
Bracket
type
12 V DC CB1aH-M-12V
ACB83401 CB1aHF-M-12V ACB82401 CB1aH-T-M-12V ACB86401 CB1aHF-T-M-12V ACB85401
24 V DC CB1aH-M-24V
ACB83402 CB1aHF-M-24V ACB82402 CB1aH-T-M-24V ACB86402 CB1aHF-T-M-24V ACB85402
Carton
Case
50
pcs.
200
pcs.
Note: Please use “CB***R**” to order with resistor inside type. (Asterisks “ * ” should be filled in from ORDERING INFORMATION.)
RATING
Coil data
1) No protective element
Contact
arrangement
Contact rating
Rated coil
voltage
1 Form A,
1 Form C
Operate voltage
(at 20°C)(Initial)
Release voltage
(at 20°C)(Initial)
Rated operating
current
[±10%] (at 20°C)
Coil resistance
[±10%] (at 20°C)
Rated operating
power
(at 20°C)
Usable voltage
range
12 V DC
3 to 7 V DC
1.2 to 4.2 V DC
117 mA
103 Ω
1.4 W
10 to 16 V DC
24 V DC
6 to 14 V DC
2.4 to 8.4 V DC
75 mA
320 Ω
1.8 W
20 to 32 V DC
12 V DC
3 to 7 V DC
1.2 to 4.2 V DC
117 mA
103 Ω
1.4 W
(PC board type)
10 to 16 V DC
150 mA
80 Ω
1.8 W
58 mA
411 Ω
1.4 W
(PC board type)
75 mA
320 Ω
1.8 W
Equivalent coil
resistance
[±10%] (at 20°C)
Rated operating
power
(at 20°C)
1 Form A High
contact capacity
24 V DC
6 to 14 V DC
2.4 to 8.4 V DC
20 to 32 V DC
Note: Other operate voltage types are also available. Please inquire our sales representative for details.
2) With resistor inside
Release voltage
(at 20°C)(Initial)
Rated operating
current
[±10%] (at 20°C)
3 to 7 V DC
1.2 to 4.2 V DC
134 mA
89.5 Ω
1.6 W
10 to 16 V DC
6 to 14 V DC
2.4 to 8.4 V DC
84 mA
287.2 Ω
2.0 W
20 to 32 V DC
134 mA
89.5 Ω
1.6 W
(PC board type)
10 to 16 V DC
168 mA
71.6 Ω
2.0 W
67 mA
358 Ω
1.6 W
(PC board type)
84 mA
287.2 Ω
Contact
arrangement
Rated coil
voltage
Operate voltage
(at 20°C)(Initial)
1 Form A,
1 Form C
12 V DC
24 V DC
12 V DC
3 to 7 V DC
1.2 to 4.2 V DC
1 Form A High
contact capacity
24 V DC
6 to 14 V DC
2.4 to 8.4 V DC
ー2ー
20 to 32 V DC
2.0 W
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Usable voltage
range
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ASCTB220E 202204
Automotive Relays CB RELAYS
Specifications
1) Standard type (12 V coil voltage)
Item
Specifications
1 Form A
Contact arrangement
Contact data
1 Form C
1 Form A High contact capacity
Contact resistance
(initial)
Max. 15 mΩ (Typ. 2 mΩ) (by voltage drop 1 A 6 V DC)
Contact material
Ag alloy
Rated switching
capacity (resistive)
40 A 14 V DC
N.O. side: 40 A 14 V DC
N.C. side: 30 A 14 V DC
70 A 14 V DC (at 20°C)
50 A 14 V DC (at 85°C)
Max. carrying current*1
(coil applied voltage 14
V DC, at 85°C,
continuous)
N.O. side: 40 A
N.O. side: 40 A
N.C. side: 30 A
N.O. side: 40 A
Min. switching load
(resistive)*2
1 A 14 V DC (at 20°C)
Insulated resistance (initial)
Min. 20 MΩ (at 500 V DC, Measurement at same location as “Dielectric strength” section.)
Between open contacts 500 Vrms for 1 min (Detection current: 10 mA)
Dielectric
strength (initial) Between contacts and
coil
500 Vrms for 1 min (Detection current: 10 mA)
Operate time
(at rated voltage)
Max. 15 ms
Max. 15 ms
Max. 15 ms
(at 20°C, without contact bounce time) (at 20°C, without contact bounce time) (at 20°C, without contact bounce time)
Release time
(at rated voltage)
Max. 15 ms
(at 20°C) (without diode)
Shock
resistance
Functional
Min. 200 m/s2 (Half-wave pulse of sine wave: 11 ms, detection time: 10 μs)
Destructive
Min. 1,000 m/s2 (Half-wave pulse of sine wave: 6 ms)
Vibration
resistance
Functional
10 to 500 Hz, Min. 44.1 m/s2 (Detection time: 10 μs)
Destructive
10 to 2,000 Hz, Min. 44.1 m/s2 (Time of vibration for each direction; X, Y, Z direction: 4 hours)
Mechanical
Min. 106 (at 120 times/min)
Electrical (at rated
switching capacity)
Flux tight: Min. 105, Sealed: Min. 5 x 104 (operating frequency: 2 s ON, 2 s OFF)
Time
characteristics
(initial)
Expected life
Conditions
Conditions for usage,
transport and storage*3
Max. 15 ms
Max. 15 ms
(at 20°C, without contact bounce time)
(at 20°C) (without diode)
(without diode)
Standard: Ambient temperature: -40 to +85°C, Humidity: 5 to 85% RH (Avoid icing and condensation)
Heat-resistant: Ambient temperature: -40 to +125°C, Humidity: 2 to 85% RH (Avoid icing and condensation)
Approx. 33 g
Weight
Notes: *1. Depends on connection conditions. Also, this does not guarantee repeated switching. We recommend that you confirm operation under actual conditions.
*2. 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.
*3. The upper operation ambient temperature limit is the maximum temperature that can satisfy the coil temperature rise value. For details, please refer to the “Automotive
Relay Users Guide”.
Please inquire our sales representative if you will be using the relay in a high temperature atmosphere (110°C).
2) Standard type (24 V coil voltage)
Item
Specifications
1 Form A
Contact arrangement
Contact data
1 Form C
1 Form A High contact capacity
Contact resistance
(initial)
Max. 15 mΩ (by voltage drop 1 A 6 V DC)
Contact material
Ag alloy
Rated switching
capacity (resistive)
20 A 28 V DC
N.O. side: 20 A 28 V DC
N.C. side: 10 A 28 V DC
20 A 28 V DC
Max. carrying current
(coil applied voltage 28
V DC, at 85°C,
continuous)
20 A
N.O. side: 20 A
N.C. side: 10 A
20 A
Note: All other specifications are the same as those of standard type (12 V coil voltage).
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ASCTB220E 202204
Automotive Relays CB RELAYS
3) Heat-resistant type (12 V and 24 v coil voltage)
Specifications
Item
12 V
1 Form A
Contact arrangement
Contact data
24 V
1 Form A
High contact capacity
1 Form C
1 Form A
1 Form C
1 Form A
High contact
capacity
Contact resistance
(initial)
Max. 15 mΩ (by voltage drop 1 A 6 V DC)
Contact material
Ag alloy
Rated switching
capacity (resistive)
40 A 14 V DC
N.O. side:
40 A 14 V DC
N.C. side:
30 A 14 V DC
70 A 14 V DC
20 A 28 V DC
N.O. side:
20 A 28 V DC
N.C. side:
10 A 28 V DC
20 A 28 V DC
Max. carrying current
(at coil applied voltage,
at 125°C, continuous)*
50 A 14 V DC
N.O. side:
50 A 14 V DC
N.C. side:
30 A 14 V DC
45 A 14 V DC*
50 A 14 V DC*
25 A 28 V DC
N.O. side:
25 A 28 V DC
N.C. side:
10 A 28 V DC
25 A 28 V DC*
Notes: 1.All other specifications are the same as those of standard (12 V coil voltage).
2.*Conditions: at coil applied voltage, at 85°C, continuous
REFERENCE DATA
CB Relays (Standard)
1.Allowable ambient temperature
2.Max. switching capability (Resistive)
( Standard )
150
120
20 A
100
30 A
80
40 A
60
40
35
50
Coil applied voltage, VDC
140
( Standard )
( N.O. side Room temperature )
60
Switching voltage, VDC
Maximum allowable ambient temperature, °C
(Heat-resistant and standard)
3.Ambient temperature and usable voltage
range
40
30
20
10
20
90
0
150
100
110
120
130
140
Applied coil voltage, %V
Notes:
• Maximum mean coil temperature: 180°C
• Curves are based on 1.4 W ( Nominal power consumption of the
unsupprressed coil at nominal voltage )
10
20
Usable voltage range
15
5
Actual value
( Max. 105 cycle )
0
25
10
105 cycle line
40
30
20
30
40
Switching current, A
50
0
-40
Operate voltage
( Cold start )
-20
0
8085 100 120
20
40
60
Ambient temperature, °C
4.Distribution of operate and release voltage 5.Distribution of operate and release time
Sample: CB1-P-12V, 42 pcs.
Sample: CB1-P-12V, 42 pcs.
60
Operate time
Release time
50
Quantity, n
Quantity, n
50
40
30
40
30
20
20
10
10
0
* Without diode
60
Operate voltage
Release voltage
2
3
4
Voltage, V
5
6
0
1
2
3
4
5
6
Operate and release time, ms
7
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ASCTB220E 202204
Automotive Relays CB RELAYS
6.Electrical life test (Motor free)
Change of operate and release voltage
Sample: CB1F-12V, 5 pcs.
Load: 25 A 14 V DC, motor free actual load
Operating frequency: ON 1 s, OFF 9 s
Ambient temperature: Room temperature
Circuit:
Change of contact resistance
50
M
5
40
Operate voltage
Max.
Ave.
Min.
4
Release voltage
3
Max.
Ave.
Min.
2
Contact resistance, mΩ
Operate and release voltage, V
6
20
10
1
0
30
0
5
No. of operations, × 104
0
10
Max.
Ave.
Min.
0
5
No. of operations, × 104
10
Load current waveform
Load; Inrush current: 80 A, Steady current: 25 A
20 A
200 ms
CB Relays (High contact capacity)
1.Allowable ambient temperature
2.Ambient temperature and usable voltage
range
Sample: CB1aHF-12V, 53 pcs.
( High contact capacity and standard )
150
120
100
30 A
40 A
80
50 A
60
40
20
90
40
70
35
60
30
25
20
Usable voltage range
10
70 A
5
0
-40
Operate voltage
Release voltage
50
40
30
15
60 A
100
110
120
130
140
150
Applied coil voltage, %V
Notes:
• Maximum mean coil temperature: 180°C
• Curves are based on 1.4 W ( Nominal power consumption of the
unsupprressed coil at nominal voltage )
Quantity, n
140
Coil applied voltage, VDC
Maximum allowable ambient temperature, °C
( Heat-resistant and high contact capacity )
3.Distribution of operate and release voltage
20
10
Operate voltage
( Cold start )
-20
0
20
40
60
8085 100 120
Ambient temperature, °C
0
0
1
2
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3
4
Voltage, V
5
6
ASCTB220E 202204
Automotive Relays CB RELAYS
4.Distribution of operate and release time
5.Contact resistance
Sample: CB1aHF-12 V, 53 pcs.
( By voltage drop 1 A 6 V DC )
Sample: CB1aHF-12V, 53 pcs.
70
60
10
Operate time
Quantity, n
Operate and release time, ms
12
8
6
50
40
30
4
20
Release time
2
0
8
10
12
Coil voltage, V
10
0
1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8
14
Resistance, mΩ
6.Electrical life test (Motor free)
Change of operate and release voltage
Sample: CB1aH-12V, 3 pcs.
Load: Inrush current: 64 A, Steady current: 35 A
Fan motor actual load ( motor free ) 12 V DC
Operating frequency: ON 3 s, OFF 7 s
Ambient temperature: Room temperature
Circuit:
50
7s
10s
9
8
40
7
6
Operate voltage
5
Max.
Ave.
Min.
4
Release voltaget
3
Max.
Ave.
Min.
2
1
M
0
0
5
No. of operations, × 104
10
Contact resistance, mΩ
Operate and release voltage, V
3s
Change of contact resistance
10
30
20
Max.
10
0
Ave.
Min.
0
5
No. of operations, × 104
10
Load current waveform
Load; Inrush current: 64 A, Steady current: 35 A
10 A
500 ms
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Automotive Relays CB RELAYS
DIMENSIONS
Unit: mm
CAD The CAD data of the products with a “CAD” mark can be downloaded from our Website.
PC board type
External dimensions
CAD
Schematic
(BOTTOM VIEW)
1 Form A
25
86
30
1
87
22
1 Form C
86
26
87a
30
8.4
16.8
0.8
87
86
87a
30
85
Including resistor
type also available
87
85
8
8.4
Tolerance
Max. 1mm : ±0.1
1 to 3 mm : ±0.2
Min. 3 mm : ±0.3
2.6
17.9
PC board pattern
(BOTTOM VIEW)
1 Form C type only
4(or5)×2.6
8.4
86
4 ( or5 )×1.4
87a
30
87
16.8
4.5
2.15
6.3
85
Including resistor
type also available
85
8
1 Form C
type only
8.4
17.9
Tolerance: ± 0.1
Plug-in type
External dimensions
CAD
Schematic
(BOTTOM VIEW)
1 Form A
25
86
30
87
11
85
Including resistor
type also available
4
1 Form C
5×6.3
1.7 dia.
86
22
26
30
87a
87 a
30
16.8
0.8
86
8.4
87
85
Including resistor
type also available
87
85
8
Tolerance
Max. 1mm : ±0.1
1 to 3 mm : ±0.2
Min. 3 mm : ±0.3
2.6
8.4
17.9
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ASCTB220E 202204
Automotive Relays CB RELAYS
Bracket type
External dimensions
CAD
5.4 ± 0.1 dia.
16
Schematic
(BOTTOM VIEW)
4
1.7
1 Form A
16
6
86
30
87
85
Including resistor
type also available
25
1 Form C
86
87a
30
11
87
4
85
Including resistor
type also available
22
5×6.3
26
0.8
30
86
85
17.9
8.4
8
87a*
87
Tolerance
Max. 1mm : ±0.1
1 to 3 mm : ±0.2
Min. 3 mm : ±0.3
2.6
8.4
16.8
1 Form A high contact capacity (Plug-in type)
External dimensions
CAD
Schematic
(BOTTOM VIEW)
86
25.5
30
87
5.8
4
15
11
85
Including resistor
type also available
2×6.3±0.08
2×9.5±0.08
26.5
22
1.2
8.4
86
16.8
0.8
4×1.7 dia. hole
30
Tolerance
Max. 1mm : ±0.1
1 to 3 mm : ±0.2
Min. 3 mm : ±0.3
87
85
8.4
2.6
17.9
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ASCTB220E 202204
Automotive Relays CB RELAYS
1 Form A high contact capacity (PC board type)
External dimensions
CAD
Schematic
(BOTTOM VIEW)
86
30
4.5
2×1.2
3×1.8
1.4
3×2.15
Tolerance
Max. 1mm : ±0.1
1 to 3 mm : ±0.2
Min. 3 mm : ±0.3
8.4
17.9
87
85
87
3.9 3.9
86
30
30
85
2.6
16.8
3.9 3.9
86
8.4
Sealed by epoxy resin
8.4
16.8
22
26.5
2×0.8
PC board pattern
(BOTTOM VIEW)
9.5
6.3
3×2.15
9.5
87
7.8
5.3
5.3
4.5
3×1.7
2×2.15
3×1.7
85
Including resistor
type also available
1
1
1
25.5
A surface
level
2.6
3×1.8
7.8
8.4
17.9
Tolerance: ± 0.1
* Intervals between terminals is measured at A surface level.
GUIDELINES FOR USAGE
For general cautions for use, please refer to the "Automotive Relay Users Guide".
Precautions when using CB relays
Soldering
Solder temperature: 350°C, within 3 sec (in a solder bath)
The effect on the relay depends on the actual PC board used.
Please verify the PC board to be used.
Usage,transport and storage conditions
1) Ambient temperature,humidity, and air pressure during
usage,transport of the relay
(1) Temperature: –40 to +85°C (Standard type)
–40 to +125°C (High heat-resistant type)
(2) Humidity: 2 to 85% RH (Avoid icing and condensation)
(3) Air pressure: 86 to 106 kPa
The humidity range varies with the temperature. Use within the
range indicated in the graph.
[Temperature and humidity range for usage, transport, and
storage]
Humidity
（％RH）
85
Allowable range
Avoid icing
when used at
temperatures
lower than 0°C
Avoid
condensation
when used at
temperatures
higher than 0°C
5
2
-40
0
Ambient temperature
（°C）
85
110125
Please refer to "the latest product specifications"
when designing your product.
•Requests to customers:
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ASCTB220E 202204
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Specifications are subject to change without notice.
ASCTB220E 202204
2022.4
