HIGH POWER
AUTOMOTIVE RELAY
CB-RELAYS
22.0
.866
26.5
1.043
FEATURES
25.5
1.004
22.0
.866
26.0
1.024
25.0
.984
• 40 A rating at 85
°
C
185
°
F
• ISO type terminals
• High shock resistance for drop test requirements
(2 meters
6.6 feet)
• Low temperature rise — all current carrying material
is copper.
• Quick connect and PC board type
mm
inch
SPECIFICATIONS
Contact
(1) Standard type (12V coil voltage)
Arrangement
Nominal switching capacity
Max. switching current
(at 85
°
C
185
°
F)
Initial contact resistance, max.
Contact material
Mechanical (at 120 cpm)
Expected life
Electrical (at rated load)
Rating
1 Form A
40 A 14 V DC
40 A 14 V DC
1 Form C
N.O.: 40 A 14 V DC
N.C.: 30 A 14 V DC
N.O.: 40 A 14 V DC
N.C.: 30 A 14 V DC
15m
Ω
Silver alloy
Min. 10
6
Flux-resistant type: Min. 10
5
*
1
Sealed type: Min. 5
×
10
4
1 Form A
Nominal switching capacity
Rating
Max. switching current
(at 85
°
C
185
°
F)
20 A 28V DC
20 A 28 V DC
1 Form C
N.O.: 20 A 28 V DC
N.C.: 10 A 28 V DC
N.O.: 20 A 28 V DC
N.C.: 10 A 28 V DC
High contact capacity
(1 Form A)
70 A 14 V DC (at 20
°
C
68
°
F)
50 A 14 V DC (at 85
°
C
185
°
F)
40 A 14 V DC
(2) Standard type (24V coil voltage)
Arrangement
*
1
All other specifications are the same as those of standard type (12V coil voltage)
(3) Heat resistant type (12V, 24V coil voltage)
Type
Arrangement
Rating
Nominal switching
capacity
Max. switching current
(at 85
°
C
185
°
F)
1 Form A
35 A 14V DC
35 A 14 V DC
12V coil voltage
1 Form C
N.O.: 35 A 14 V DC
N.C.: 30 A 14 V DC
N.O.: 35 A 14 V DC
N.C.: 30 A 14 V DC
1 Form A
20 A 28 V DC
20 A 28V DC
24V coil voltage
1 Form C
N.O.: 20 A 28 V DC
N.C.: 10 A 28 V DC
N.O.: 20 A 28 V DC
N.C.: 10 A 28 V DC
*
1
All other specifications are the same as those of standard type (12V coil voltage)
Coil
Arrangement
1 Form A,
1 Form C
High contact capacity
Coil voltage
12V DC
24V DC
12V DC
Nominal operating power
1.4W
1.8W
1.8W
379
CB
Characteristics
Max. operating speed (at rated load)
Initial insulation resistance*
2
Initial breakdown voltage*
3
Between open contacts
Between contacts and coil
15 cpm
Min. 20 M
Ω
(at 500 V DC)
500 Vrms for 1 min.
500 Vrms for 1 min.
Max. 15 ms
Max. 15 ms
Min. 200 m/s
2
{20 G}
Min. 1,000 m/s
2
{100 G}
10 to 500Hz, Min. 44.1m/s
2
{4.5G}
10 to 2,000Hz, Min. 44.1m/s
2
{4.5G}
–40
°
C to +85
°
C
–40
°
F to +185
°
F
(Heat resistant type: –40
°
C to +125
°
C
–40
°
F to +257
°
F)
5 to 85% R.H.
Approx. 33 g
1.16 oz
*
6
Half-wave pulse of sine wave: 11ms; detection time: 10
µ
s
*
7
Half-wave pulse of sine wave: 6ms
*
8
Detection time: 10
µ
s
*
9
Refer to 5. Conditions for operation, transport and storage mentioned in
AMBIENT ENVIRONMENT (Page 61)
Operate time*
4
(at nominal voltage)
Release time (without diode)*
4
(at nominal voltage)
Shock resistance
Vibration resistance
Conditions for operation, transport and storage*
9
(Not freezing and condensing at low temperature)
Unit weight
Remarks
* Specifications will vary with foreign standards certification ratings.
*
1
All other specifications are the same as those of standard type (12V coil voltage)
*
2
Measurement at same location as "Initial breakdown voltage" section
*
3
Detection current: 10 mA
*
4
Wave is standard shock voltage of
±
1.2
×
50
µ
s according to JEC-212-1981
*
5
Excluding contact bounce time
Functional*
5
Destructive*
6
Functional*
7
Functional*
8
Ambient temp.
Humidity
TYPICAL APPLICATIONS
• Automotive system
• ABS, Head Lamp, Air conditioner
• Tracter, Combine
ORDERING INFORMATION
CB
1
F
T
R
M
12 V
Contact arrangement
1a: 1 Form A
1: 1 Form C
1aH: High contact
capacity*
1
(1 Form A)
Protective construction
Nil: Sealed type
F: Flux-resistant type
Heat resistant of types
Nil: Standard type
T: Heat resistant type*
2
Type classification
Nil: Standard type
D: with diode inside
R: with resistor inside
Mounting classification
Nil: Quick connect type
P: PC board type
M:Bracket type
Coil voltage (DC)
12, 24 V
Note: Bulk pakage: 50 pcs.; Case: 200 pcs.
*1 High contact capacity type is available only for “Quick connect” and 12 V.
(See “1. Standard type in TYPES” Page 380)
*2 Heat resistant type with high contact capacity is not available.
(See “2. Heat resistant type in TYPES” Page 381)
TYPES
1. Standard type
Contact arrangement
Mounting classification
PC board type
1 Form A
Quick connect type
Bracket type
PC board type
1 Form C
Quick connect type
Bracket type
High contact capacity (1 Form A)
Quick connect type
Coil voltage, V DC
12V
24V
12V
24V
12V
24V
12V
24V
12V
24V
12V
24V
12V
Part No.
Sealed type
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-12V
Flux-resistant type
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-12V
380
CB
2. Heat resistant type
Contact arrangement
Mounting classification
PC board type
1 Form A
Quick connect type
Bracket type
PC board type
1 Form C
Quick connect type
Bracket type
Coil voltage, V DC
12V
24V
12V
24V
12V
24V
12V
24V
12V
24V
12V
24V
Part No.
Sealed type
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
Flux-resistant type
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
COIL DATA
(at 20
°
C
68
°
F)
Contact
arrangement
1 Form A
1 Form C
High contact
capacity
(1 Form A)
Nominal
voltage,
V DC
12
24
12
Pick-up voltage,
V DC (max.)
3 to 7
6 to 14
3 to 7
Drop-out
voltage,
V DC (mim.)
1.2 to 4.2
2.4 to 8.4
1.2 to 4.2
Nominal
current,
mA (
±
10%)
117
75
150
Coil resistance,
Ω
(
±
10%)
103
320
80
Nominal
operating power,
W
1.4
1.8
1.8
Usable voltage
range,
V DC
10 to 16
20 to 32
10 to 16
mm
inch
Schematic (Bottom view)
25.0
.984
DIMENSIONS
1. PC board type
1a
86
1c
86
87a
87
4.5
.177
85
87
85
1.0
.039
2.15
6.3
.085
.248
26.0
1.024
Sealed by epoxy resin
22.0
.866
Including diode type, including load type also available.
Including diode
(1 Form A)
86
Including load
(1 Form C)
86
30
87a
87
Venting
hole
86
87a*
0.8
.031
30
8.4
.331
16.8
.661
87
85
87
85
85
8.0
.315
8.4
17.9
.331
.705
2.6
.102
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. Quick connect type
Schematic (Bottom view)
25.0
.984
1a
86
1c
86
87a
87
4.0
11.0
.157
.433
1.7 dia.
.067 dia.
5-6.3
5-.248
26.0
1.024
Sealed by epoxy resin
Venting
hole
86
87a*
85
87
85
Including diode type, including load type also available.
22.0
.866
8.4
.331
0.8
.031
30
85
87
16.8
.661
2.6
.102
8.0
.315
8.4
.331
17.9
.705
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
381
CB
3. Bracket type
5.4±0.1 dia.
.213±.004
16.0
.630
6.0 16.0
.236 .630
4.0±0.1
.157±.004
1.7
.067
mm
inch
Schematic (Bottom view)
1a
86
1c
86
87a
87
25.0
.984
85
87
85
Including diode type, including load type also available.
4.0
11.0
.157
.433
22.0
.866
1.7 dia.
.067 dia.
5-6.3
5-.248
26.0
1.024
Sealed by epoxy resin
0.8
.031
30
85
86
87a*
8.0±0.1
.315±.004
2.6
.102
8.4
.331
8.4
.331
17.9
.705
16.8
.661
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
87
4. High contact capacity type
Schematic (Bottom view)
25.5
1.004
86
30
85
87
15.0
.591
5.8
.228
26.5
1.043
4-1.7 dia. hole
4-.067 dia. hole
Sealed by epoxy resin
4.0
.157
11.0
.433
2-6.3
±0.08
2-.248
±.003
2-9.5
±0.08
2-.374
±.003
22.0
.866
0.8
.031
1.2
.047
30
8.4
.331
16.8
.661
86
85
87
8.4
.331
17.9
.705
2.6
.102
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
REFERENCE DATA
1. Coil temperature rise
Tested sample: CB1aF-P-12V, 3pcs.
Ambient temperature: 85
°
C
185
°
F
Contact carrying current: 40A
180
Pick-up and drop-out voltage, V
2. Electrical life test (Motor load)
Tested sample: CB1a-12V, 3pcs.
Load: 18A steady, Inrush 82A
Operating frequency: ON 2s, OFF 6s
7
5
Contact welding: 0 times
Miscontact: 0 times
40A
Temperature rise,
°C
150
6
5
4
3
2
1
0
0
5
Contact resistance, mΩ
4
Max.
120
Pick-up voltage
–
x
3
x
90
Drop-out voltage
60
Max.
–
x
Min.
2
Min.
30
0
12
14
16
Coil applied voltage, V
1
0
10
0
5
No. of operations,
×10
4
10
No. of operations,
×10
4
For Cautions for use, see Relay Technical Information (Page 48 to 76).
382
9/1/2000
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