© Panasonic Corporation 2019
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2019.03
DSP RELAYS
1a 8A, 1a1b/2a 5A
small polarized power
relays
FEATURES
1. Compact with high contact rating
Even with small 10 mm .394 inch (H) x
11 mm .433 inch (W) x 20 mm .787
inch (L) (dimensions, high capacity
switching is provided: 1a, 8 A 250 V
AC; 2a and 1a1b, 5 A 250 V AC.
2. High switching capability
High contact pressure, low contact
bounce, and wiping operation improve
resistance to weld bonding. Resistant
against lamp load and dielectric
loading: 1a achieves maximum
switching capacity of 2,000 VA (8A 250
V AC).
3. High sensitivity
Using the same type of highperformance
polar magnetic circuits as DS relays, by
matching the spring load to the magnetic
force of attraction, greater sensitivity
has been achieved. The resultant pick
up sensitivity of about 190 mW makes
possible direct driving of transistors and
chips.
4. High breakdown voltage
Breakdown voltage has been raised by
keeping the coil and contacts separate.
Conforms with FCC Part 68
5. Latching types available
6. Wide variation
Three types of contact arrangement
are o󰀨ered: 1a, 2a, and 1a1b. In
addition, each is available in standard
and reversed polarity types.
7. Sealed construction allows
automatic washing
8. Complies with safety standards
Complies with Japan Electrical
Appliance and Material Safety Law
requirements for operating 200 V
power supply circuits, and complies
with UL, CSA, and TÜV safety
standards.
9. Sockets are available
Protective construction: Sealed type
ORDERING INFORMATION
Between contact and
coil Between contacts
3,000 Vrms for 1 min.
5,000 V surge
breakdown voltage
1,000 Vrms for 1 min.
1,500 V surge
breakdown voltage
TYPICAL APPLICATIONS
1. O󰀩ce and industrial electronic
devices
2. Terminal devices of information
processing equipment, such as
printer, data recorder
3. O󰀩ce equipment (copier, facsimile)
4. Measuring instruments
5. NC machines, temperature
controllers and programmable logic
controllers
DSP
Nominal coil voltage
（DC）
3, 5, 6, 9, 12, 24 V
Contact arrangement
1a：1 Form A
1：1 Form A 1 Form B
2a:2 Form A
Contact material
• AgSnO2 type
F ：1 Form A 1 Form B
Nil：1 Form A, 2 Form A
Polarity
Nil：Standard polarity
R ：Reverse polarity
Operating function
Nil：Single side stable
L2：2 coil latching
Notes：1. Reverse polarity types available
（add suffix-R）
2. Certified by UL, CSA and TÜV
Automation Controls Catalog
DSP
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© Panasonic Corporation 2019 ASCTB180E 201903
TYPES
Standard packing: Carton: 50 pcs.; Case: 500 pcs.
Note: Reverse polarity type are manufactured by lot upon receipt of order.
* Sockets available.
RATING
1.Coil data
1) Single side stable
• Operating characteristics such as ‘Operate voltage’ and ‘Release voltage’ are inuenced by mounting conditions, ambient temperature, etc.
Therefore, please use the relay within ± 5% of rated coil voltage.
• ‘Initial’ means the condition of products at the time of delivery.
2) 2 coil latching
Contact
arrangement
Nominal coil
voltage
Single side stable 2 coil latching
Part No. Part No.
1 Form A
3V DC DSP1a-DC3V DSP1a-L2-DC3V
5V DC DSP1a-DC5V DSP1a-L2-DC5V
6V DC DSP1a-DC6V DSP1a-L2-DC6V
9V DC DSP1a-DC9V DSP1a-L2-DC9V
12V DC DSP1a-DC12V DSP1a-L2-DC12V
24V DC DSP1a-DC24V DSP1a-L2-DC24V
1 Form A
1 Form B
3V DC DSP1-DC3V-F DSP1-L2-DC3V-F
5V DC DSP1-DC5V-F DSP1-L2-DC5V-F
6V DC DSP1-DC6V-F DSP1-L2-DC6V-F
9V DC DSP1-DC9V-F DSP1-L2-DC9V-F
12V DC DSP1-DC12V-F DSP1-L2-DC12V-F
24V DC DSP1-DC24V-F DSP1-L2-DC24V-F
2 Form A
3V DC DSP2a-DC3V DSP2a-L2-DC3V
5V DC DSP2a-DC5V DSP2a-L2-DC5V
6V DC DSP2a-DC6V DSP2a-L2-DC6V
9V DC DSP2a-DC9V DSP2a-L2-DC9V
12V DC DSP2a-DC12V DSP2a-L2-DC12V
24V DC DSP2a-DC24V DSP2a-L2-DC24V
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
Max. applied voltage
(at 20°C 68°F)
3V DC
80%V or less of
nominal voltage
(Initial)
10%V or more of
nominal voltage
(Initial)
100 mA 30Ω
300mW 130%V of
nominal voltage
5V DC 60 mA 83Ω
6V DC 50 mA 120Ω
9V DC 33.3mA 270Ω
12V DC 25 mA 480Ω
24V DC 12.5mA 1,920Ω
Nominal coil
voltage
Set voltage
(at 20°C 68°F)
Reset 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 Max. applied voltage
(at 20°C 68°F)
Set coil Reset coil Set coil Reset coil Set coil Reset coil
3V DC
80%V or less of
nominal voltage
(Initial)
80%V or less of
nominal voltage
(Initial)
100 mA 100 mA 30Ω 30Ω
300mW 300mW 130%V of
nominal voltage
5V DC 60 mA 60 mA 83Ω 83Ω
6V DC 50 mA 50 mA 120Ω 120Ω
9V DC 33.3mA 33.3mA 270Ω 270Ω
12V DC 25 mA 25 mA 480Ω 480Ω
24V DC 12.5mA 12.5mA 1,920Ω 1,920Ω
DSP
3
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2. Specications
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. Wave is standard shock voltage of ±1.2×50μs according to JEC-212-1981
*3. The upper limit of the ambient temperature is the maximum temperature that can satisfy the coil temperature rise value. Refer to Usage, transport and storage
conditions in NOTES.
REFERENCE DATA
1. Max. switching capacity 2.-(2) Life curve (1 Form A 1 Form B)2.-(1) Life curve (1 Form A 1 Form B)
Characteristics Item Specications
Contact
Arrangement 1 Form A 1 Form A 1 Form B 2 Form A
Contact resistance (Initial) Max. 30 mΩ (By voltage drop 6 V DC 1A)
Contact material Au-ashed AgSnO2 type
Rating
Nominal switching capacity (resistive load) 8 A 250 V AC, 5A 30V DC 5 A 250 V AC, 5 A 30 V DC
Max. switching power (resistive load) 2,000 VA, 150 W 1,250 VA, 150 W
Max. switching voltage 250 V AC, 125 V DC (0.2 A)
Max. switching current 8 A (AC), 5 A (DC) 5 A (AC, DC)
Nominal operating power 300 mW
Min. switching capacity (Reference value)*110m A 5 V DC
Electrical
characteristics
Insulation resistance (Initial) Min. 1,000MΩ (at 500V DC) Measurement at same location as “Breakdown voltage”
section.
Breakdown voltage (Initial)
Between open contacts 1,000 Vrms for 1min. (Detection current: 10mA.)
Between contact sets 2,000 Vrms (1 Form A 1 Form B, 2 Form A) (Detection current: 10mA.)
Between contact and coil 3,000 Vrms for 1min. (Detection current: 10mA.)
Surge breakdown voltage*2
(Initial) between contacts and coil 5,000 V
Operate time [Set time] (at 20°C 68°F) (Initial) Max. 10 ms [10 ms] (Nominal coil voltage applied to the coil, excluding contact bounce time.)
Release time [Reset time] (at 20°C 68°F) (Initial) Max. 5 ms [10 ms] (Nominal coil voltage applied to the coil, excluding contact bounce time.)
(without diode)
Mechanical
characteristics
Shock resistance Functional Min. 196 m/s2 (Half-wave pulse of sine wave: 11 ms; detection time: 10µs.)
Destructive Min. 980 m/s2 (Half-wave pulse of sine wave: 6 ms.)
Vibration resistance Functional 10 to 55 Hz at double amplitude of 2 mm (Detection time: 10µs.)
Destructive 10 to 55 Hz at double amplitude of 3.5 mm
Expected life Mechanical Min. 5×107 (at 180 times/min.)
Electrical Min. 105 (resistive load)
Conditions
Conditions for operation, transport and storage*3 (Not
freezing and condensing at low temperature)
Ambient temperature:
–40°C to +60°C
–40°F to +140°F
Ambient temperature:
–40°C to +65°C
–40°F to +149°F
Ambient temperature:
–40°C to +60°C
–40°F to +140°F
Max. operating speed 3 cps
Unit weight Approx. 4.5 g .16 oz
10 100 1,000
0.1
1
10
Contact voltage
（V）
Contact current
（A）
AC resistive
load
（1a）
AC resistive
load
（1a）
AC resistive
load
（1a1b,2a）
AC resistive
load
（1a1b,2a）
DC resistive
load
（1a）
DC resistive
load
（1a）
DC resistive
load
（1a1b, 2a）
DC resistive
load
（1a1b, 2a）
0 1 2 43 765
100
10
265V
・130V AC
（cosφ＝ 1)
265V
・130V AC
（cosφ＝ 1)
265V
・130V AC
（cosφ＝ 0.4)
265V
・130V AC
（cosφ＝ 0.4)
Switching capacity
（A）
No. of operations
（×104）
0.5 1 105
100
50
10
30V DC
（L/R＝7ms）
30V DC
（L/R＝7ms）
Switching capacity
（A）
No. of operations
（×104）
30V DC
resistive load
30V DC
resistive load
3.-(1) Coil temperature rise (1 Form A) 3.-(3) Coil temperature rise (2 Form A)3.-(2) Coil temperature rise
(1 Form A 1 Form B)
8A
0A
Tested sample：DSP1a-12V DC, 5 pcs.
10080 120
10
20
30
40
60
50
0
Temperature rise
（℃）
Coil applied voltage
（%V）
5A
0A
Tested sample：DSP1-12V DC, 5 pcs.
10080 120
10
20
30
40
60
50
0
Temperature rise
（℃）
Coil applied voltage
（%V）
Tested sample：DSP2a-12V DC, 5 pcs.
5A
0A
10080 120
10
20
30
40
60
50
0
Temperature rise
（℃）
Coil applied voltage
（%V）
DSP
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4.-(1) Operate & release time
(without diode, 1 Form A)
4.-(3) Operate & release time
(without diode, 2 Form A)
4.-(2) Operate & release time
(without diode, 1 Form A 1 Form B)
4.-(4) Operate & release time
(with diode, 1 Form A)
4.-(6) Operate & release time
(with diode, 2 Form A)
4.-(5) Operate & release time
(with diode, 1 Form A 1 Form B)
Max.
Max.
Min.
Ave.
Ave.
Min.
10080 120
1
2
3
4
5
6
7
0
Tested sample：DSP1a-12V DC, 5 pcs.
Coil applied voltage
（%V）
Operate timeOperate time
Release timeRelease time
Operate and release time
（ms）
Max.
Min.
Ave.
Ave.
Max.
Min.
10080 110
1
2
3
4
6
7
8
9
Tested sample：DSP1-12V DC, 5 pcs.
5
0
Coil applied voltage
（%V）
Operate timeOperate time
Release time
Operate and release time
（ms）
Tested sample：DSP2a-12V DC, 5 pcs.
1
2
3
4
6
7
8
9
5
010080 120
Max.
Max.
Min.
Ave.
Ave.
Min.
Coil applied voltage
（%V）
Operate timeOperate time
Release timeRelease time
Operate and release time
（ms）
Tested sample：DSP1a-12V DC, 5 pcs.
Max.
Min.
Ave.
Ave.
Max.
Min.
1
2
3
4
6
7
8
9
5
010080 120
Coil applied voltage
（%V）
Operate timeOperate time
Release time
Operate and release time
（ms）
Max.Max.
Min.
Ave.
Ave.
Max.
Min.Min.
10080 110
1
2
3
4
6
7
8
9
5
0
Tested sample：DSP1-12V DC, 5 pcs.
Coil applied voltage
（%V）
Operate timeOperate time
Release time
Operate and release time
（ms）
Tested sample：DSP2a-12V DC, 5 pcs.
Max.
Min.
Ave.
Ave.
Max.
Min.
1
2
3
4
6
7
8
9
5
010080 120
Coil applied voltage
（%V）
Operate timeOperate time
Release time
Operate and release time
（ms）
5.-(1) Change of pick-up and drop-out voltage
(1 Form A)
5.-(3) Change of pick-up and drop-out voltage
(2 Form A)
5.-(2) Change of pick-up and drop-out voltage
(1 Form A 1 Form B)
2020
ｰ40ｰ40ｰ60ｰ60 ｰ20ｰ20 00
4040 6060 8080 100100
2020
Tested sample：DSP1a-12V DC, 5 pcs.
Operate voltageOperate voltage
Release voltageRelease voltage
Ambient
temperature
（℃）
Ambient
temperature
（℃）
1010
3030
ｰ10ｰ10
ｰ30ｰ30
ｰ20ｰ20
Change rate to
nominal V
（
%
V
）
Change rate to
nominal V
（
%
V
）
8080
Release voltageRelease voltage
2020
ｰ40ｰ40ｰ60ｰ60 ｰ20ｰ20 00
4040 6060 100100
2020
1010
3030
ｰ10ｰ10
ｰ30ｰ30
ｰ20ｰ20
Tested sample：DSP1-12V DC, 5 pcs.
Operate voltageOperate voltage
Ambient
temperature
（℃）
Ambient
temperature
（℃）
Change rate to
nominal V
（
%
V
）
Change rate to
nominal V
（
%
V
）
2020
ｰ40ｰ40ｰ60ｰ60 ｰ20ｰ20 00
4040 6060 8080 100100
2020
1010
3030
ｰ10ｰ10
ｰ30ｰ30
ｰ20ｰ20
Tested sample：DSP2a-12V DC, 5 pcs.
Operate voltageOperate voltage
Release voltageRelease voltage
Ambient
temperature
（℃）
Ambient
temperature
（℃）
Change rate to
nominal V
（
%
V
）
Change rate to
nominal V
（
%
V
）
6.-(1) Inuence of adjacent mounting
(1 Form A)
6.-(3) Inuence of adjacent mounting
(2 Form A)
6.-(2) Inuence of adjacent mounting
(1 Form A 1 Form B)
0
5
10
15
5
10
15
Tested sample：DSP1a-12V DC, 5 pcs.
105
ℓ
A B C
ℓ
A, C
relays
are not
energized
A, C
relays
are
energized
Rate of change
（％）
Rate of change
（％）
Operate voltageOperate voltage
Release voltageRelease voltage
Inter-relay distance
（ℓ）
, mm
1 2 43 5 6
ｰ8
ｰ10
ｰ6
ｰ4
ｰ2
0
0
2
4
6
8
10
ℓ
A B C
ℓ
A, C
relays
are not
energized
A, C
relays
are
energized
Rate of change
（％）
Rate of change
（％）
Tested sample：DSP1-12V DC, 5 pcs.
Operate voltageOperate voltage
Release voltageRelease voltage
Inter-relay distance
（ℓ）
, mm
Tested sample：DSP2a-12V DC, 5 pcs.
0
5
10
15
5
10
15
105
ℓ
A B C
ℓ
A, C
relays
are not
energized
A, C
relays
are
energized
Rate of change
（％）
Rate of change
（％）
Operate voltageOperate voltage
Release voltageRelease voltage
Inter-relay distance
（ℓ）
, mm
DSP
5
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DIMENSIONS (mm)
External dimensions1. 1 Form A type
Schematic (Bottom view)
PC board pattern (Bottom view)
Single side stable 2 coil latching
(Deenergized condition) (Reset condition)
3.510.5
4ｰ0.8 4ｰ0.3
1.21
20.2
11
7.62
10.167.62
10
General tolerance ±0.3
6ｰ0.3
6ｰ0.8
3.5 10.5
1.21 2.54
7.62 7.62
7.62
10
20.2
11
General tolerance ±0.3
Single side stable 2 coil latching
Single side stable 2 coil latching
－
＋
16
158
－
＋
－
＋
16
1
15
258
4ｰ1.2dia.
7.62
10.167.62
Tolerance ±0.1
2.54
6ｰ1.2dia.
7.62
7.627.62
Tolerance ±0.1
External dimensions2. 1 Form A 1 Form B type
Schematic (Bottom view)
7.62
3.5 10.5
1.21 10.167.62
10
20.2
11
6ｰ0.36ｰ0.8
General tolerance ±0.3
3.5 10.5
1.21 2.54
7.62 7.62
7.62
10
20.2
11
8ｰ0.3
8ｰ0.8
General tolerance
±
0.3
PC board pattern (Bottom view)
Single side stable 2 coil latching
(Deenergized condition) (Reset condition)
Single side stable 2 coil latching
Single side stable 2 coil latching
－
＋
16129
158
－
＋
－
＋
16129
1
15
258
6ｰ1.2dia.
Tolerance ±0.1
7.62
10.167.62 2.54
8ｰ1.2dia.
7.62
7.627.62
Tolerance ±0.1
External dimensions3. 2 Form A type
Schematic (Bottom view)
7.62
3.5 10.5
1.21 10.167.62
10
20.2
11
6ｰ0.36ｰ0.8
General tolerance ±0.3
3.5 10.5
1.21 2.54
7.62 7.62
7.62
10
20.2
11
8ｰ0.3
8ｰ0.8
General tolerance ±0.3
PC board pattern (Bottom view)
Single side stable 2 coil latching
(Deenergized condition) (Reset condition)
Single side stable 2 coil latching
Single side stable 2 coil latching
－
＋
1612
8
9
15
－
＋
－
＋
16129
1
15
258
6ｰ1.2dia.
Tolerance ±0.1
7.62
10.167.62 2.54
8ｰ1.2dia.
7.62
7.627.62
Tolerance ±0.1
CAD The CAD data of the products with a “CAD” mark can be downloaded from our Website.
CAD
CAD
CAD
DSP
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SAFETY STANDARDS
Item UL (Recognized) CSA (Certied) TÜV (Certied)
File No. Contact rating File No. Contact rating File No. Contact rating
1 Form A
E43028 8A 125/250V AC General use
1/6HP 125/250V AC
5A 30V DC Resistive
B300
LR26550 8A 125/250V AC General use
1/6HP 125/250V AC
5A 30V DC Resistive
B300
B 13 11
13461 342
8A 250V AC (cosφ =1.0)
5A 250V AC (cosφ =0.4)
5A 30V DC (0 ms)
1 Form A
1 Form B
E43028 5A 125/250V AC General use
1/6HP 125/250V AC
5A 30V DC Resistive
30W Max.: 1A 30V DC-0.24A
125V DC
LR26550 5A 125/250V AC General use
1/6HP 125/250V AC
5A 30V DC Resistive
30W Max.: 1A 30V DC-0.24A
125V DC
B300
B 13 11
13461 342
5A 250V AC (cosφ =1.0)
3A 250V AC (cosφ =0.4)
5A 30V DC (0 ms)
2 Form A
E43028 5A 125/250V AC General use
1/10HP 125/250V AC
5A 30V DC Resistive
LR26550 5A 125/250V AC General use
1/10HP 125/250V AC
5A 30V DC Resistive
B 13 11
13461 342
5A 250V AC (cosφ =1.0)
3A 250V AC (cosφ =0.4)
5A 30V DC (0 ms)
* Remarks: The standard certied for may di󰀨er depending on where the product was manufactured.
NOTES
1. For cautions for use, please read
“GENERAL APPLICATION
GUIDELINES”.
2. Soldering conditions
Please obey the following conditions
when soldering automatically.
1) Preheating: Within 120°C 248°F and
within 120 seconds
2) Soldering iron: 260°C±5°C
500°F±41°F and within 6 seconds
3. Cleaning
For automatic cleaning, the boiling
method is recommended. Avoid
ultrasonic cleaning which subjects the
relays to high frequency vibrations, which
may cause the contacts to stick.
It is recommended that a uorinated
hydrocarbon or other alcoholic solvents
be used.
4. External magnetic eld
Since DSP relays are highly sensitive
polarized relays, their characteristics will
be a󰀨ected by a strong external magnetic
eld. Avoid using the relay under that
condition.
5. Coil operating power
Pure DC current should be applied to the
coil. The wave form should be
rectangular. If it includes ripple, the ripple
factor should be less than 5%.
However, check it with the actual circuit
since the characteristics may be slightly
di󰀨erent.
6. When using, please be aware that
the a contact and b contact sides of
1 Form A 1 Form B type may go on
simultaneously at operate time and
release time.
Please refer to "the latest product specications"
when designing your product.
• Requests to customers :
https://industrial.panasonic.com/ac/e/salespolicies/
© Panasonic Corporation 2019
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2019.03
DSP RELAYS
PC BOARD SOCKETS
ACCESSORIES
TYPES AND APPLICABLE RELAYS
TYPES
Standard packing: Carton: 50 pcs.; Case: 500 pcs.
Type No.
Applicable
relays
For DSP1a For DSP1a, DSP1, DSP2a
DSP1a-PS DSP1a-PSL2 DSP2a-PS DSP2a-PSL2
DSP1a relays OK OK OK OK
DSP1a-L2 relays OK OK
DSP1 relays OK OK
DSP1-L2 relays OK
DSP2a relays OK OK
DSP2a-L2 relays OK
Product name Part No.
For Single side stable For 2 coil latching
For DSP1a DSP1a-PS DSP1a-PSL2
For DSP1a, DSP1, DSP2a DSP2a-PS DSP2a-PSL2
SPECIFICATIONS
Item Specications
Breakdown voltage 3,000 Vrms between terminals
(Except for the portion between coil terminals)
Insulation resistance 1,000 MΩ between terminals at 500 V
Heat resistance 150°C 302°F for 1 hour
Max. continuous current 8 A (DSP1a-PS and DSP1a-PSL2),
5 A (DSP2a-PS and DSP2a-PSL2)
DIMENSIONS (mm)
External dimensions PC board pattern (Bottom view)
DSP1a-PS, DSP1a-PSL2 DSP2a-PS, DSP2a-PSL2
5.7
17±0.6
0.3±0.1
3.7
7.6210.16
10.167.62
2.54
2 coil latching type only
7.62
2.61
0.65±0.14ｰ0.8±0.1
23±0.6
11±0.6
General tolerance ±0.3
2
2.54
2 coil latching type only
2 coil latching type only
Tolerance ±0.1
Note
：
Terminal No.2 and 15 are for
DSP1a-PSL2 only.
2.54
1.2dia.
1
15
15 16
58 2
2.54
2 coil latching type only
2 coil latching type only
Tolerance ±0.1
Note
：
Terminal No.2 and 15 are for
DSP2a-PSL2 only.
2.54
1.2dia.
1
15
15 16
58
129
FIXING AND REMOVAL METHOD
1. Match the direction of relay and socket. 3. Remove the relay, applying force in the
direction shown below.
4. In case there is not enough space for
nger to pick relay up, use screw drivers
in the way shown below.
2. Both ends of relays are xed so tightly
that the socket hooks on the top surface
of relays.
Notes: 1. Exercise care when removing relays. If
greater than necessary force is applied at
the socket hooks, deformation may alter the
dimensions so that the hook will no longer
catch, and other damage may also occur.
2. It is hazardous to use IC chip sockets.
CAD
CAD The CAD data of the products with a “CAD” mark can be downloaded from our Website.
Panasonic Corporation 2019
c
Panasonic Corporation Electromechanical Control Business Division
industrial.panasonic.com/ac/e/ -1-
Humidity, %R.H.
Allowable range
85
5
0 85–40
(Avoid
condensation
when used at
temperatures
higher than
0°C
(Avoid icing
when used at
temperatures
lower than 0°C)
Ambient temperature, °C
)
GUIDELINES FOR POWER RELAYS AND HIGH-CAPACITY DC CUT OFF RELAYS USAGE
Long term current carrying
A circuit that will be carrying a current continuously for long periods
without relay switching operation. (circuits for emergency lamps, alarm
devices and error inspection that, for example, revert only during
malfunction and output warnings with form B contacts) Continuous,
long-term current to the coil will facilitate deterioration of coil insulation
and characteristics due to heating of the coil itself.
For circuits such as these, please use a magnetic-hold type latching
relay. If you need to use a single stable relay, use a sealed type relay
that is not easily a󰀨ected by ambient conditions and make a failsafe
circuit design that considers the possibility of contact failure or
disconnection.
DC Coil operating power
Steady state DC current should be applied to the coil. The wave form
should be rectangular. If it includes ripple, the ripple factor should be
less than 5%.
However, please check with the actual circuit since the electrical
characteristics may vary. The rated coil voltage should be applied to
the coil and the set/reset pulse time of latching type relay di󰀨ers for
each relays, please refer to the relay's individual specications.
Coil connection
When connecting coils of polarized relays, please check coil polarity
(+,-) at the internal connection diagram (Schematic). If any wrong
connection is made, it may cause unexpected malfunction, like
abnormal heat, re and so on, and circuit do not work. Avoid
impressing voltages to the set coil and reset coil at the same time.
Usage, Transport, and Storage Conditions
During usage, storage, or transportation, avoid locations
subjected to direct sunlight and maintain normal temperature,
humidity and pressure conditions.
Temperature/Humidity/Pressure
When transporting or storing relays while they are tube
packaged, there are cases the temperature may di󰀨er from the
allowable range. In this case be sure to check the individual
specications. Also allowable humidity level is inuenced by
temperature, please check charts shown below and use relays
within mentioned conditions. (Allowable temperature values
di󰀨er for each relays, please refer to the relay's individual
specications.)
Maximum allowable voltage and temperature rise
Proper usage requires that the rated coil voltage be impressed on the
coil. Note, however, that if a voltage greater than or equal to the
maximum continuous voltage is impressed on the coil, the coil may
burn or its layers short due to the temperature rise. Furthermore, do
not exceed the usable ambient temperature range listed in the catalog.
Operate voltage change due to coil temperature rise
(Hot start)
In DC relays, after continuous passage of current in the coil, if the
current is turned OFF, then immediately turned ON again, due to the
temperature rise in the coil, the pick-up voltage will become somewhat
higher. Also, it will be the same as using it in a higher temperature
atmosphere. The resistance/temperature relationship for copper wire
is about 0.4% for 1°C, and with this ratio the coil resistance increases.
That is, in order to operate of the relay, it is necessary that the voltage
be higher than the pick-up voltage and the pick-up voltage rises in
accordance with the increase in the resistance value. However, for
some polarized relays, this rate of change is considerably smaller.
Precautions for Coil Input
Ambient Environment
For cautions for use, please read “GUIDELINES FOR RELAY USAGE”.
https://industrial.panasonic.com/ac/e/control/relay/cautions_use/index.jsp
1) Temperature:
The tolerance temperature range differs for each relays,
please refer to the relay’s individual specifications
2) Humidity:
5 to 85 % RH
3) Pressure:
86 to 106 kPa
Dew condensation
Condensation occurs when the ambient temperature drops
suddenly from a high temperature and humidity, or the relay is
suddenly transferred from a low ambient temperature to a high
temperature and humidity. Condensation causes the failures like
insulation deterioration, wire disconnection and rust etc.
Panasonic Corporation does not guarantee the failures caused
by condensation.
The heat conduction by the equipment may accelerate the
cooling of device itself, and the condensation may occur.
Please conduct product evaluations in the worst condition of
the actual usage. (Special attention should be paid when high
temperature heating parts are close to the device. Also please
consider the condensation may occur inside of the device.)
Icing
Condensation or other moisture may freeze on relays when the
temperature become lower than 0°C.This icing causes the sticking of
movable portion, the operation delay and the contact conduction failure
etc. Panasonic Corporation does not guarantee the failures caused by
the icing.
The heat conduction by the equipment may accelerate the cooling of
relay itself and the icing may occur. Please conduct product
evaluations in the worst condition of the actual usage.
Low temperature and low humidity
The plastic becomes brittle if the switch is exposed to a low
temperature, low humidity environment for long periods of time.
High temperature and high humidity
Storage for extended periods of time (including transportation periods)
at high temperature or high humidity levels or in atmospheres with
organic gases or sulde gases may cause a sulde lm or oxide lm to
form on the surfaces of the contacts and/or it may interfere with the
functions. Check out the atmosphere in which the units are to be
stored and transported.
ASCTB412E 201903
Panasonic Corporation Electromechanical Control Business Division
industrial.panasonic.com/ac/e/ Panasonic Corporation 2019
c
-2-
GUIDELINES FOR POWER RELAYS AND HIGH-CAPACITY DC CUT OFF RELAYS USAGE
Package
In terms of the packing format used, make every e󰀨ort to keep the
e󰀨ects of moisture, organic gases and sulde gases to the absolute
minimum.
Silicon
When a source of silicone substances (silicone rubber, silicone oil,
silicone coating materials and silicone lling materials etc.) is used
around the relay, the silicone gas (low molecular siloxane etc.) may be
produced.
This silicone gas may penetrate into the inside of the relay. When the
relay is kept and used in this condition, silicone compound may adhere
to the relay contacts which may cause the contact failure. Do not use
any sources of silicone gas around the relay (Including plastic seal
types).
Others
Cleaning
1) Although the environmentally sealed type relay (plastic sealed type,
etc.) can be cleaned, avoid immersing the relay into cold liquid (such
as cleaning solvent) immediately after soldering. Doing so may
deteriorate the sealing performance.
2) Cleaning with the boiling method is recommended(The temperature
of cleaning liquid should be 40°C or lower ).
Avoid ultrasonic cleaning on relays. Use of ultrasonic cleaning may
cause breaks in the coil or slight sticking of the contacts due to
ultrasonic energy.
Please refer to "the latest product specications"
when designing your product.
•Requests to customers:
https://industrial.panasonic.com/ac/e/salespolicies/
NOx Generation
When relay is used in an atmosphere high in humidity to switch a load
which easily produces an arc, the NOx created by the arc and the
water absorbed from outside the relay combine to produce nitric acid.
This corrodes the internal metal parts and adversely a󰀨ects operation.
Avoid use at an ambient humidity of 85%RH or higher (at 20°C). If use
at high humidity is unavoidable, please contact our sales
representative.
ASCTB412E 201903
2019
ASCTB180E-2 201903