Products with diode inside
are discontinued in 2014.
Automotive relay with ISO
terminal arrangement
CB
CB RELAYS
FEATURES
Products to be discontinued.
1. This relay has an ISO (International
Organization for Standardization)
terminal arrangement.
Terminals are all solder plated.
*35 A type: Terminal is the plug-in type
(no plating).
2. Relay is compact and high capacity
(40 A).
Compact form factor realized with space
saving 22 26 mm .866 1.024 inch
small base area thanks to integrated
bobbin and base construction. Features
high switching capacity of 40 A
3. Features high thermal resistance of
125C 257F (heat resistant type).
Heat resistant type is available that can
withstand use near engines. (40 A
switching capacity)
4. Sealed type available for resisting
adverse environments.
5. Protective element type is also
available.
6. For only plug-in types, types with
nominal switching capacities of 35 A
(12 V) and 15 A (24 V) are available.
TYPICAL APPLICATIONS
1. Automobiles
Headlights, Cell motors, Air conditioners,
ABS, EPS, etc.
2. Construction equipment
3. Agricultural equipment, Conveyor,
etc.
ORDERING INFORMATION
CB
Contact arrangement
1a: 1 Form A
1: 1 Form C
Contact rating
Nil: Standard type
H: High contact capacity type
V: 35 A type
Protective construction
Nil: Sealed type
F: Flux-resistant type
Heat resistant of types
Nil: Standard type
T: Heat resistant type
Protective element
Nil: None
D: with diode inside
R: with resistor inside
Mounting classification
Nil: Plug-in type
P: PC board type
M: Bracket type
Coil voltage (DC)
12V, 24 V
D: with diode inside
ds_61202_en_cb: 030412D
1
CB
Products with diode inside
are discontinued in 2014.
TYPES
1. Standard type
Contact arrangement
Mounting classification
PC board type
1 Form A
Plug-in type
Bracket type
PC board type
1 Form C
Plug-in type
Bracket type
PC board type*
High contact capacity
(1 Form A)
Plug-in type
Bracket type
Nominal coil voltage
12V DC
24V DC
12V DC
24V DC
12V DC
24V DC
12V DC
24V DC
12V DC
24V DC
12V DC
24V DC
12V DC
24V DC
12V DC
24V DC
12V DC
24V DC
Sealed type
Part No.
CB1a-P-12V
CB1a-P-24V
CB1a-12V
CB1a-24V
CB1a-M-12V
CB1a-M-24V
CB1-P-12V
CB1-P-24V
CB1-12V
CB1-24V
CB1-M-12V
CB1-M-24V
CB1aH-P-12V
CB1aH-P-24V
CB1aH-12V
CB1aH-24V
CB1aH-M-12V
CB1aH-M-24V
Flux-resistant type
Part No.
CB1aF-P-12V
CB1aF-P-24V
CB1aF-12V
CB1aF-24V
CB1aF-M-12V
CB1aF-M-24V
CB1F-P-12V
CB1F-P-24V
CB1F-12V
CB1F-24V
CB1F-M-12V
CB1F-M-24V
CB1aHF-P-12V
CB1aHF-P-24V
CB1aHF-12V
CB1aHF-24V
CB1aHF-M-12V
CB1aHF-M-24V
Packing quantity; Carton: 50 pcs. Case: 200 pcs.
built-in diode type. (Asterisks “” should be filled in from parts table.)
Notes: 1. Please use “CBR” to order built-in resistor type and “CBD” to order
2. *Regarding solder, this product is not MIL (Military Standard) compliant. Please evaluate solder mounting by the actual equipment before using.
2. Heat resistant type
Contact arrangement
Mounting classification
PC board type
1 Form A
Plug-in type
Bracket type
PC board type
1 Form C
Plug-in type
Bracket type
PC board type*
High contact capacity
(1 Form A)
Plug-in type
Bracket type
Nominal coil voltage
12V DC
24V DC
12V DC
24V DC
12V DC
24V DC
12V DC
24V DC
12V DC
24V DC
12V DC
24V DC
12V DC
24V DC
12V DC
24V DC
12V DC
24V DC
Sealed type
Part No.
CB1a-T-P-12V
CB1a-T-P-24V
CB1a-T-12V
CB1a-T-24V
CB1a-T-M-12V
CB1a-T-M-24V
CB1-T-P-12V
CB1-T-P-24V
CB1-T-12V
CB1-T-24V
CB1-T-M-12V
CB1-T-M-24V
CB1aH-T-P-12V
CB1aH-T-P-24V
CB1aH-T-12V
CB1aH-T-24V
CB1aH-T-M-12V
CB1aH-T-M-24V
Flux-resistant type
Part No.
CB1aF-T-P-12V
CB1aF-T-P-24V
CB1aF-T-12V
CB1aF-T-24V
CB1aF-T-M-12V
CB1aF-T-M-24V
CB1F-T-P-12V
CB1F-T-P-24V
CB1F-T-12V
CB1F-T-24V
CB1F-T-M-12V
CB1F-T-M-24V
CB1aHF-T-P-12V
CB1aHF-T-P-24V
CB1aHF-T-12V
CB1aHF-T-24V
CB1aHF-T-M-12V
CB1aHF-T-M-24V
Packing quantity; Carton: 50 pcs. Case: 200 pcs.
built-in diode type. (Asterisks “” should be filled in from parts table.)
Notes: 1. Please use “CBR” to order built-in resistor type and “CBD” to order
2. *Regarding solder, this product is not MIL (Military Standard) compliant. Please evaluate solder mounting by the actual equipment before using.
3. 35 A type (*Terminals are all of the plug-in type.)
Contact arrangement
1 Form A
1 Form C
1 Form A with resistor inside
1 Form C with resistor inside
1 Form A with diode inside
1 Form C with diode inside
Nominal coil voltage
12V DC
24V DC
12V DC
24V DC
12V DC
24V DC
12V DC
24V DC
12V DC
24V DC
12V DC
24V DC
Sealed type
Part No.
CB1aV-12V
CB1aV-24V
CB1V-12V
CB1V-24V
CB1aV-R-12V
CB1aV-R-24V
CB1V-R-12V
CB1V-R-24V
CB1aV-D-12V
CB1aV-D-24V
CB1V-D-12V
CB1V-D-24V
Flux-resistant type
Part No.
CB1aVF-12V
CB1aVF-24V
CB1VF-12V
CB1VF-24V
CB1aVF-R-12V
CB1aVF-R-24V
CB1VF-R-12V
CB1VF-R-24V
CB1aVF-D-12V
CB1aVF-D-24V
CB1VF-D-12V
CB1VF-D-24V
Packing quantity; Carton: 50 pcs. Case: 200 pcs.
2
ds_61202_en_cb: 030412D
Products with diode inside
CB
are discontinued in 2014.
RATING
1. Coil data
1) 1. No protective element
Contact
arrangement
Nominal coil
voltage
Pick-up voltage
(Initial, at 20C 68F)
Drop-out voltage
(Initial, at 20C 68F)
1 Form A,
1 Form C
12V DC
24V DC
3 to 7V DC
6 to 14V DC
1.2 to 4.2V DC
2.4 to 8.4V DC
High contact
capacity
(1 Form A)
12V DC
3 to 7V DC
1.2 to 4.2V DC
24V DC
6 to 14V DC
2.4 to 8.4V DC
Nominal operating
current
(at 20C 68F)
117mA
75mA
117mA
150mA
58mA
75mA
Coil resistance
(10%)
(at 20C 68F)
103
320
103
80
411
320
Nominal operating
power
(at 20C 68F)
1.4W
1.8W
1.4W (PC board type)
1.8W
1.4W (PC board type)
1.8W
Nominal operating
current
(at 20C 68F)
134mA
84mA
Combined resistance
(10%)
(at 20C 68F)
89.5
287.2
Nominal operating
power
(at 20C 68F)
1.6W
2.0W
Usable voltage
range
10 to 16V DC
20 to 32V DC
10 to 16V DC
20 to 32V DC
Note: Other pick-up voltage types are also available. Please contact us for details.
2) With resistor inside
Contact
arrangement
Nominal coil
voltage
Pick-up voltage
(Initial, at 20C 68F)
Drop-out voltage
(Initial, at 20C 68F)
1 Form A,
1 Form C
12V DC
24V DC
3 to 7V DC
6 to 14V DC
1.2 to 4.2V DC
2.4 to 8.4V DC
Usable voltage
range
10 to 16V DC
20 to 32V DC
2. Specifications
1) Standard type (12 V coil voltage)
Characteristics
Item
Arrangement
Contact
Contact resistance (Initial)
Contact material
Nominal switching capacity (Initial)
Rating
Electrical
characteristics
Mechanical
characteristics
Expected life
Conditions
Specifications
1 Form A
Max. carrying current (Initial)
(14V DC, at 85C 185F, continuous)
Nominal operating power
Min. switching capacity*1
Initial insulation resistance
Initial breakdown Between open contacts
voltage
Between contacts and coil
Operate time (at nominal voltage)
(at 20C 68F)
Release time (at nominal voltage)
(at 20C 68F)
Functional
Shock resistance
Destructive
Functional
Vibration
resistance
Destructive
Electrical (at nominal switching capacity)
Mechanical
Conditions for operation, transport and
storage*2
Max. operating speed
Unit weight
Notes:
40A 14V DC
N.O.: 40A
1.4W
High contact capacity
(1 Form A)
1 Form C
Typ2m (By voltage drop 6 V DC 1 A)
Ag alloy (Cadmium free)
N.O.: 40A 14V DC
70A 14V DC (at 20C 68F)
N.C.: 30A 14V DC
50A 14V DC (at 85C 185F)
N.O.: 40A, N.C.: 30A
N.O.: 40A
1.4W
1.8W (1.4W: PC board type)
1A 12V DC (12V DC), 1A 24V DC (24V DC)
Min. 20 M (at 500 V DC)
500 Vrms for 1 min. (Detection current: 10mA)
500 Vrms for 1 min. (Detection current: 10mA)
Max. 15ms (at 20C 68F, excluding contact bounce time) (Initial)
Max. 15ms (at 20C 68F, excluding contact bounce time, without diode) (Initial)
Min. 200 m/s2 {20G}
Min. 1,000 m/s2 {100G}
10 Hz to 500 Hz, Min. 44.1m/s2 {4.5G}
10 Hz to 2,000 Hz, Min. 44.1m/s2 {4.5G} Time of vibration for each direction; X. Y. Z direction: 4 hours
Flux-resistant type: Min. 105, Sealed type: Min. 5104 (Operating frequency: 2s ON, 2s OFF)
Min. 106 (at 120 cpm)
Standard type; Ambient temp: –40 to +85C –40 to +185F,
Humidity: 5 to 85% R.H. (Not freezing and condensing at low temperature)
Heat resistant type; Ambient temp: –40 to +125C –40 to +257F,
Humidity: 5 to 85% R.H. (Not freezing and condensing at low temperature)
15 cpm (At nominal switching capacity)
Approx. 33 g 1.16 oz
*1This 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.
*2The upper operation ambient temperature limit is the maximum temperature that can satisfy the coil temperature rise value. Refer to “6. Usage, Storage and Transport
Conditions“ in AMBIENT ENVIRONMENT section in Relay Technical Information.
2) Standard type (24 V coil voltage)
Characteristics
Item
Arrangement
Contact
Contact resistance (Initial)
Contact material
Nominal switching capacity (Initial)
Rating
Specifications
1 Form A
Max. carrying current (Initial)
(28V DC, at 85C 185F, continuous)
Nominal operating power
20A 28V DC
High contact capacity
(1 Form A)
1 Form C
Max. 15m (By voltage drop 6 V DC 1 A)
Ag alloy (Cadmium free)
N.O.: 20A 28V DC
N.C.: 10A 28V DC
20A 28V DC
20A
N.O.: 20A, N.C.: 10A
20A
1.8W
1.8W
1.8W, 1.4W (PC board type)
Note: All other specifications are the same as those of standard type (12 V coil voltage)
ds_61202_en_cb: 030412D
3
CB
Products with diode inside
are discontinued in 2014.
3) Heat resistant type (12 V and 24 V coil voltage)
Characteristics
Specifications
Item
Arrangement
12V
1 Form A
1 Form C
Contact
Rating
Contact resistance (Initial)
Contact material
Nominal switching capacity
(Initial)
Max. carrying current (Initial)
(at 85C 185F, continuous)*
Nominal operating power
40A 14V DC
50A 14V DC
1.4W
24V
High contact
capacity
1 Form A
(1 Form A)
Max. 15m (By voltage drop 6 V DC 1 A)
Ag alloy (Cadmium free)
N.O.: 40A 14V DC
40A 14V DC
N.C.: 30A 14V DC
N.O.: 50A 14V DC
45A
50A
N.C.: 30A 14V DC 14V DC 14V DC
1.4W
1.4W
1.8W (PC board
type)
20A 28V DC
25A 28V DC
1 Form C
N.O.: 20A 28V DC
N.C.: 10A 28V DC
N.O.: 25A 28V DC
N.C.: 10A 28V DC
1.8W
1.8W
High contact
capacity
(1 Form A)
20A 28V DC
25A 28V DC
1.8W,
1.4W
(PC board type)
Notes: 1. All other specifications are the same as those of standard type (12 V coil voltage)
2. *Current value in which carry current is possible when the coil temperature is 180C 356F
4) 35 A type (12 V coil voltage)
Characteristics
Contact
Rating
Electrical
characteristics
Mechanical
characteristics
Expected life
Conditions
Unit weight
Item
Arrangement
Contact resistance (Initial)
Contact material
Nominal switching capacity (Resistive load)
Max. carrying current (Initial)
(14V DC, at 85C 185F, continuous)
Nominal operating power
Min. switching capacity (Reference value)*
Initial insulation resistance
Initial breakdown Between open contacts
voltage
Between contacts and coil
Operate time (at nominal voltage)
Release time (at nominal voltage)
Functional
Shock resistance
Destructive
Functional
Vibration
resistance
Destructive
Electrical (at nominal switching capacity)
Mechanical
Specifications
1 Form A
1 Form C
Typ2m (By voltage drop 6 V DC 1 A)
Ag alloy (Cadmium free)
35A 14V DC
N.O.: 35A 14V DC, N.C.: 25A 14V DC
N.O.: 35A
N.O.: 35A, N.C.: 25A
1.4W, 1.6W (with resistor inside)
1A 12V DC (12V DC), 1A 24V DC (24V DC)
Min. 20 M (at 500 V DC)
500 Vrms for 1 min. (Detection current: 10mA)
500 Vrms for 1 min. (Detection current: 10mA)
Max. 15ms (excluding contact bounce time) (Initial)
Max. 15ms (excluding contact bounce time, without diode) (Initial)
Min. 100 m/s2 {10G} (Half-wave pulse of sine wave: 11ms; detection: 10s)
Min. 1,000 m/s2 {100G} (Half-wave pulse of sine wave: 6ms)
10 Hz to 100 Hz, Min. 44.1m/s2 {4.5G} (Detection time: 10s)
10 Hz to 2,000 Hz, Min. 44.1m/s2 {4.5G} Time of vibration for each direction; X. Y. Z direction: 4 hours
Flux-resistant type: Min. 105, Sealed type: Min. 5104 (Operating frequency: 2s ON, 2s OFF)
Min. 106 (at 120 cpm)
Ambient temp: –40C to +85C –40F to +185F
Conditions for operation, transport and storage
Humidity: 5% R.H. to 85% R.H. (Not freezing and condensing at low temperature)
Max. operating speed
15 cpm (At nominal switching capacity)
Approx. 26 g .92 oz
Note: * 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.
5) 35 A type (24 V coil voltage)
Characteristics
Item
Contact
Arrangement
Nominal switching capacity (Resistive load)
Max. carrying current
Rating
(14V DC, at 85C 185F, continuous)
Nominal operating power
Specifications
1 Form A
15A 28V DC
1 Form C
N.O.: 15A 28V DC, N.C.: 8A 28V DC
N.O.: 15A
N.O.: 15A, N.C.: 8A
1.8W, 2.0W (with resistor inside)
Note: All other specifications are the same as those of 35 A type (12 V coil voltage).
4
ds_61202_en_cb: 030412D
Products with diode inside
CB
are discontinued in 2014.
REFERENCE DATA
CB RELAYS (Standard type)
1. Allowable ambient temperature
2. Max. switching capability (Resistive load)
3. Ambient temperature and operating voltage
range
(Standard type)
150
140
(N.O. side Room temperature)
120
20A
100
30A
80
40A
60
40
Coil applied voltage, VDC
60
Switching voltage, VDC
Maximum Allowable Ambient Temperature, °C
(Standard type)
50
40
30
20
10 cycle line
20
90
30
25
20
15
10
5
40
35
10
100
110 120 130 140 150
Applied Coil Voltage, %V
0
5
Actual value
(Max. 105 cycle)
0
10
20
30
40
Switching current, A
0
-40 -20
50
0
Pick-up voltage
(Cold start)
20 40 60 8085 100 120
Ambient temperature, °C
Asssumption:
• Maximum mean coil temperature: 180C
• Curves are based on 1.4W (Nominal power consumption of the unsupprressed coil at nominal voltage)
4. Distribution of pick-up and drop-out voltage
5. Distribution of operate and release time
Sample: CB1-P-12V, 42pcs.
Sample: CB1-P-24V, 42pcs.
* Without diode
60
40
30
40
30
20
20
10
10
0
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0
0
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Voltage, V
6-(1). Electrical life test (Motor free)
Change of contact resistance
Tested sample
Relay harness
Motor
5
Pick-up voltage
Max.
X
Min.
4
3
Max.
X
Min.
Drop-out voltage
2
40
3
20
10
1
0
Observation of load waveform
with current probe and digital
oscilloscope
50
Contact resistance, m
Pick-up and drop-out voltage, V
6
Circuit
M
Operate and release time, ms
Change of pick-up and drop-out voltage
Sample: CB1F-12V, 5pcs.
Load: 25A 14V DC, motor free actual load
Switching frequency: (ON:OFF = 1s:9s)
Ambient temperature: Room temperature
14V DC
Operate time
Release time
50
Quantity, n
Frequency
50
60
Pick-up voltage
Drop-out voltage
0
0
5
No. of operations, × 10
10
4
0
5
Max.
X
Min.
10
No. of operations, × 104
Load current waveform
Inrush current: 80A, Steady current: 25A
20A
200ms
ds_61202_en_cb: 030412D
5
CB
Products with diode inside
Change of pick-up and drop-out voltage
Circuit
Relay
Halogen lamp 12V 45/65W
Change of contact resistance
50
6
5
Pick-up voltage
Max.
X
Min.
4
3
Drop-out voltage
2
Max.
X
Min.
1
Contact resistance, m
Sample: CB1F-12V, 5pcs.
Load: 45/65Wx5 parallel, 14V DC, halogen lamp
actual load
Switching frequency: (ON:OFF = 1s:8s)
Ambient temperature: Room temperature
Pick-up and drop-out voltage, V
6-(2). Electrical life test (Lamp load)
are discontinued in 2014.
40
30
20
10
Max.
X
Min.
20
14V DC
0
0
10
0
20
0
10
No. of operations, × 104
No. of operations, × 104
Observation of load waveform with
current probe and digital oscilloscope
Load current waveform
Inrush current: 100A, Steady current: 20A
20.5A
200ms
CB RELAYS (High contact capacity type)
1. Allowable ambient temperature
2. Max. switching capability
3. Ambient temperature and operating voltage
range
(High contact capacity type)
60
120
30A
100
40A
80
50A
60
60A
40
40
Coil applied voltage, VDC
150
140
Switching voltage, VDC
Maximum Allowable Ambient Temperature, °C
(High contact capacity type)
50
40
30
20
Actual value
(Max. 1 cycle)
70A
20
90
100
0
110 120 130 140 150
Applied Coil Voltage, %V
0
20
30
25
Operation range
20
15
10
105 cycle line
10
35
40
60
80
5
0
-40 -20
100
Switching current, A
0
Pick-up voltage
(Cold start)
20 40 60 8085 100 120
Ambient temperature, °C
Asssumption:
• Maximum mean coil temperature: 180C
• Curves are based on 1.4W (Nominal power consumption of the unsupprressed coil at nominal voltage)
4. Distribution of pick-up and drop-out voltage
5. Distribution of operate and release time
6. Contact resistance
Sample: CB1aHF-12V, 53pcs.
Sample: CB1aHF-12V, 53pcs.
Sample: CB1aHF-12V, 53pcs.
(By voltage drop 6V DC 1A)
70
40
30
20
10
0
Operate time
8
6
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
50
40
30
4
20
Release time
2
Voltage, V
6
60
10
Frequency
50
70
12
Operate and release time, ms
Frequency
60
Pick-up voltage
Drop-out voltage
0
10
8
10
12
Coil voltage, V
14
0
1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8
Resistance, mΩ
ds_61202_en_cb: 030412D
Change of pick-up and drop-out voltage
Sample: CB1aH-12V, 3pcs.
Load: Inrush current: 64A/Steady current: 35A
Fan motor actual load (motor free) 12V DC
Switching frequency: (ON:OFF = 3s:7s)
Ambient temperature: Room temperature
Circuit
7s
10s
Change of contact resistance
50
10
9
8
7
6
Pick-up voltage
5
Max.
X
Min.
4
Drop-out voltage
3
Max.
X
Min.
2
1
0
Contact resistance, mΩ
7-(1). Electrical life test (Motor free)
3s
CB
are discontinued in 2014.
Pick-up and drop-out voltage, V
Products with diode inside
0
5
40
30
20
Max.
10
X
Min.
0
10
0
5
No. of operations, × 104
M
10
No. of operations, × 104
Load current waveform
Inrush current: 64A, Steady current: 35A
10A
500ms
7-(2). Electrical life test (Motor lock)
Change of pick-up and drop-out voltage
Sample: CB1aH-12V, 5pcs.
Load: 100A 14V DC
Magnet clutch actual load (lock condition)
Switching frequency: (ON:OFF = 1s:9s)
Ambient temperature: Room temperature
Clutch
M
50
Pick-up voltage
5
Max.
X
Min.
4
Max.
X
Min.
3
2
(5V DC
applied)
1
Lock condition
0
Contact resistance, mΩ
Pick-up and drop-out voltage, V
6
Circuit
14V DC
Change of contact resistance
40
30
20
Drop-out voltage
10
0
10
20
40
60
No. of operations
80
100
0
0
10
20
40
60
80
Max.
X
Min.
100
No. of operations
Load current waveform
100A 14V DC
20A
200ms
ds_61202_en_cb: 030412D
7
CB
Products with diode inside
are discontinued in 2014.
CB RELAY (35 A type)
1-(1). Distribution of pick-up and drop-out
voltage
1-(2). Distribution of pick-up and drop-out
voltage
1-(3). Distribution of pick-up and drop-out
voltage
Sample: CB1aV-12V, 30pcs.
Sample: CB1aV-24V, 30pcs.
Sample: CB1V-24V, 30pcs.
20
20
Pick-up voltage
Drop-out voltage
30
Pick-up voltage
Drop-out voltage
18
Frequency
10
14
Frequency
Frequency
16
15
Pick-up voltage
Drop-out voltage
25
12
10
20
15
8
10
6
5
4
5
2
0
0
0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
0
0 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5
Voltage, V
Voltage, V
0
4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0
3.5 4.5
11.5 12.5
Voltage, V
2.-(1) Contact resistance
2.-(2) Contact resistance
2.-(3) Contact resistance
Sample: CB1aV-12V, 30pcs.
(By voltage drop 12 V DC 1A)
Sample: CB1aV-24V, 30pcs.
(By voltage drop 24 V DC 1A)
Sample: CB1V-24V, 30pcs.
(By voltage drop 24 V DC 1A)
25
N.C. side
N.O. side
15
Frequency
20
Frequency
15
10
10
5
5
15
10
5
0
1.4
1.6
1.8
0
2.0
Contact resistance, mΩ
1.6
1.8
0
2.0
Circuit
3s
Change of contact resistance
50
11
10
9
Pick-up voltage
8
Max.
X
Min.
7
6
5
4
3
Drop-out voltage
2
6s
0 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0
Contact resistance, mΩ
Change of pick-up and drop-out voltage
Sample: CB1aV-D-24V, 3pcs.
Load: Blower fan load 28 V DC
Inrush current: 30 A/Steady current: 10 A
Switching frequency: (ON:OFF = 3s:3s)
Switching cycle: 105
Ambient temperature: 85C
Coil protective element: Diode
3s
1.4
Contact resistance, mΩ
Pick-up and drop-out voltage, V
3. Electrical life test (Blower fan)
0
Max.
X
Min.
Contact resistance, mΩ
Frequency
20
0
20
25
40
30
20
10
Max.
X
Min.
1
0
0
5
No. of operations, × 104
10
0
0
5
10
No. of operations, × 104
M
Load current waveform
Inrush current: 30 A, Steady current: 10 A
10A
500ms
8
ds_61202_en_cb: 030412D
Products with diode inside
CB
are discontinued in 2014.
DIMENSIONS(mm inch)
CAD Data
Data from our Web site.
Download CAD
1. PC board type
External dimensions
CAD Data
Schematic (Bottom view)
1 Form A
86
30
25.0
.984
87
85
4.5
.177
Including diode type,
including resistor type also available
1.0
.039
2.15
6.3 .085
.248
26.0
1.024
22.0
.866
1 Form C
86
30
87a
87
85
86
0.8
.031
Including diode type,
including resistor type also available
8.4
.331
16.8
.661
87a
30
diode type
87
85
8
.315
8.4
17.9 .331
.705
2.6
.102
PC board pattern (Bottom view)
4(or5)-2.6
4(or5)-.102
1 Form C type only
86
8.4
.331
87a
Dimension:
General tolerance
Max. 1mm .039 inch:
0.1 .004
1 to 3mm .039 to .118 inch: 0.2 .008
Min. 3mm .118 inch:
0.3 .012
30
87
4(or5)-1.4
4(or5)-.055
16.8
.661
85
1 Form C type only
8.0
.315
8.4
.331
17.9
.705
2. Plug-in type * The dimensions are the same as those of 35A type.
CAD Data
External dimensions
Schematic (Bottom view)
1 Form A
86
25.0
.984
30
87
85
Including diode type,
including resistor type also available
4.0
11.0.157
.433
5-6.3
5-.248
26.0
1.024
1.7 dia.
.067 dia.
22.0
.866
86
30
8.4
.331
86
0.8
.031
85
87a
87
Including diode type,
including resistor type also available
87a
30
85
1 Form C
87
8
.315
8.4
.331
17.9
.705
16.8
.661
diode type
2.6
.102
Dimension:
General tolerance
Max. 1mm .039 inch:
0.1 .004
1 to 3mm .039 to .118 inch: 0.2 .008
Min. 3mm .118 inch:
0.3 .012
ds_61202_en_cb: 030412D
9
CB
Products with diode inside
are discontinued in 2014.
3. Bracket type
External dimensions
CAD Data
16.0
.630
5.4±0.1 dia.
.213±.004
Schematic (Bottom view)
4.0±0.1
.157±.004
1.7
.067
1 Form A
86
30
6.0 16.0
.236 .630
87
85
Including diode type,
including resistor type also available
25.0
.984
1 Form C
86
30
4.0
11.0.157
.433
22.0
.866
85
5-6.3
5-.248
26.0
1.024
1.7 dia.
.067 dia.
87a
87
Including diode type,
including resistor type also available
diode type
0.8
.031
30
86
85
87a*
17.9
.705
8.4
.331
87
8
.315
2.6
.102
16.8
.661
8.4
.331
Dimension:
General tolerance
Max. 1mm .039 inch:
0.1 .004
1 to 3mm .039 to .118 inch: 0.2 .008
Min. 3mm .118 inch:
0.3 .012
4. High contact capacity (1 Form A) (Plug-in type)
CAD Data
External dimensions
Schematic (Bottom view)
86
30
25.5
1.004
85
87
Including diode type,
including resistor type also available
4.0
.157 11.0
.433
15.0
.591
5.8
.228
2-6.3 ±0.08
2-.248 ±.003
26.5
1.043
4-1.7 dia. hole
4-.067 dia. hole
diode type
22.0
.866
2-9.5±0.08
2-.374±.003
8.4
.331
0.8
.031
86
1.2
.047
16.8
.661
30
87
85
8.4
.331
17.9
.705
2.6
.102
Dimension:
General tolerance
Max. 1mm .039 inch:
0.1 .004
1 to 3mm .039 to .118 inch: 0.2 .008
Min. 3mm .118 inch:
0.3 .012
10
ds_61202_en_cb: 030412D
Products with diode inside
CB
are discontinued in 2014.
5. High contact capacity (1 Form A) (PC board type)
CAD Data
External dimensions
Schematic (Bottom view)
86
30
25.5
1.004
1.0
.039
1.0
.039
4.5
.177
5.3
.209
3-1.7
3-.067
2-0.8
2-.031
A*
9.5
.374
22.0
.866
4.5
.177
3-1.7
3-.067
diode type
PC board pattern (Bottom view)
1.4
.055
8.4
.331
3-2.15
3-.085
2.6
.102
86
86
30
85
87
85
5.3
.209
2-2.15
9.5
6.3 2-.085
.374 .248
26.5
1.043
Sealed by epoxy resin
2-1.2
2-.047
1.0
.039
87
8.4
.331
3.9 3.9
.154 .154 17.9
.705
3.9
.154 16.8
3.9 .661
.154
3-1.8
3-.071
30
87
8.4
7.8 .331 16.8
.307
.661
85
3-2.15
3-.085
2.6
.102
7.8
.307
8.4
.331
17.9
.705
3-1.8
3-.071
* Intervals between terminals is measured at A surface level.
Dimension:
General tolerance
Max. 1mm .039 inch:
0.1 .004
1 to 3mm .039 to .118 inch: 0.2 .008
Min. 3mm .118 inch:
0.3 .012
Cautions regarding the protection element
1. Part numbers without protection
elements
1) 12 V models
When connecting a coil surge protection
circuit to these relays, we recommend a
zener diode with a zener voltage of 24 V
or higher, or a resistor (680 to 1,000).
When a diode is connected to the coil in
parallel, the release time will slow down
and working life may shorten. Before use,
please check the circuit and verify that
the diode is not connected in parallel to
the coil drive circuit.
2) 24 V models
When connecting a coil surge protection
circuit to these relays, we recommend a
zener diode with a zener voltage of 48 V
or higher, or a resistor (2,800 to
4,700).
When a diode is connected to the coil in
parallel, the release time will slow down
and working life may shorten. Before use,
please check the circuit and verify that
the diode is not connected in parallel to
the coil drive circuit.
2. Part numbers with diodes
These relays use a diode in the coil surge
protection element. Therefore, the
release time is slower and the working
life might be shorter compared to part
numbers without protection elements and
part numbers with resistors.
Be sure to use only after evaluating
under actual load conditions.
3. Part numbers with resistors
This part number employs a resistor in
the coil surge protection circuit; therefore,
an external surge protection element is
not required. In particular, when a diode
is connected in parallel with a coil, the
release time becomes slower which
could adversely affect working life.
Please check the circuit and make sure
that a diode is not connected in parallel
with the coil drive circuit.
For Cautions for Use, see Relay Technical Information.
ds_61202_en_cb: 030412D
11
