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  • General-Purpose Relay LY4
  • General-Purpose Relay LY4
  • General-Purpose Relay LY4

General-Purpose Relay LY4 LY4 DC24

4.60 (10)
LY4 DC24
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Item Feature
Ambient Humidity
5 - 85%RH
Rated Current (mA)
Inductive Load (cos phi =0.4, L/R = 7 ms)
DC24V 5A
Contact Materials
Not available
Terminal Shape
Plug-in terminal
Failure Rate P Level (Reference Value: Opening/Closing Frequency 120 times/min)
DC5V 100mA
Impact Resistance (Malfunction)
Installation Shape
Standard type
Number of Poles
Coil Inductance (H)/ Iron Working Time
Power Consumption (VA, W)
About 1.5
Indicator Lamp
Not available
Contact Maximum Value
Withstand Voltage
Coil and contacts between :AC2000V50/60 Hz 5 min Different pole contacts between :AC2000V50/60 Hz 5 min The junction between same poles :AC1000V50/60 Hz 5 min
Mechanical Durability
More than100 million times (opening and closing frequency of 18000 times per hour)
Vibration Resistance (malfunction)
10-55 To 10 Hz single amplitude (double amplitude of 1.0 mm) 0.5 mm
Insulation Resistance (Mohm)
More than 100 Measure the same DC500V insulation resistance meter for voltage section location
This product is manufactured in Japanese standards. Please check the specification before you order., This product is manufactured in Japanese standards. Please check the specification before you order.
Recovery Time
25 ms or less Rated operation voltage condition, excluding contact bounce.
Operating Time
25 ms or less Rated operation voltage condition, excluding contact bounce.23 deg C ambient temperature
Contact Type
Impact Resistance
CR Circuit
Not available
Resistance Load
DC24V 10A
Maximum Contact Voltage (V)
Number of Pins
Rated Voltage (V)
Maximum Switching Frequency (times/hour)/rated load
Maximum Switching Frequency (times/hour)/mechanical
Operating Voltage
80% or less
Release Voltage
More than 10 %
Weight (g)
About 70
Coil Inductance (H)/ Iron Opening Time
Rated Current
Vibration Resistance
10-55 To 10 Hz single amplitude (double amplitude of 1.0 mm) 0.5 mm
Electrical Durability
More than 200,000 (rated openign and closing frequency of 1800 times per hour)
Contact Resistance (mohm)
Less than 50 DC5V 1A voltage depression
Operating Ambient Temperature (deg C)
-25-40 (however, not in cases of freezing or dew condensation) With an energization current below 4A, it is -25-55 deg C.
Maximum Voltage (V)
110% (ambient temperature of 23 deg C)
External Dimensions (Width (W)x Depth (D)x Height (H)) (mm)
41.5 or less x 42.4 x 28.0 or less
Standard form
Coil Resistance (ohm)
350 (when coil temperature is 23 deg C) common differences: +/-15%
Customer Reviews
5 star 8
4 star 0
3 star 2
2 star 0
1 star 0
Review Rating: 4.60
10 Customer Reviews
The reviews are automatic translation.
Repair of welding machine
From Japan
On 2016-12-28 22:33:25
It is perfect for genuine replacement. If you can keep the price a little more, it is even better.
This review is about item#2492332.
Machine maintenance
From Japan
On 2016-11-16 20:28:34
Since it is the first exchange, I do not know because there is no track record but I hope the movement of the machine will be smooth
This review is about item#2492314.
For office machines
From Japan
On 2016-02-23 18:08:34
I bought this purchase for spare use.
This review is about item#02492323.
Original equipment (car racing field)
From Japan
On 2015-09-17 22:32:41
It can be used under a bad environment without worry with stable operation. I hope you will continue to manufacture it for a long time.
This review is about item#35080726.
Disconnection of circuit
From Japan
On 2014-06-19 20:01:10
Goods are solid and it seems to be reliable
This review is about item#02492314.
Switching instantaneous power interruption
From Japan
On 2014-02-25 19:18:24
· Good for the application
This review is about item#02492314.
We are using it as a fixed time OFF circuit of heater for home toilet.
From Japan
On 2014-02-18 22:51:42
Compact in terms of contact capacity. Robustness is also good. I feel that it is difficult to see the figure of the contact point as an improvement point. Since I am not working for a company, I will remove the company name check.
This review is about item#02492314.
Machine control system repair
From Japan
On 2013-12-23 17:27:04
Since it is used in the control system of repaired machine, it is always in stock, but since there is no retail store in the neighborhood, this time I purchased it with monotaro san. It can be used normally. Although other relay purchasers are also written, I think that it is good that the legs of the relay bend at the time of transportation, so it would be good to insert foamed polystyrene and protect it.
This review is about item#02492375.
Synchronous on / off control of the load connected to the tenant circuit.
From Japan
On 2011-09-11 23:14:09
Normally, I think that it is a place to choose "MY ~" even from a large number of choices because of the price. But I'm making it "LY ~". <Good point> Unlike "MY ~", the legs for the motion coil are "vertically oriented", points easy for beginners' workers to educate, "few mistakes" on construction . <Points that were bad> ① Because I ordered it with individuals this time, "Restoring one leg, one bent slightly", restoring on site, with a radio pliers. It is exaggerated to say "bad points", it is not a problem. I plan to use it in the future. ② Compared to "MY ~", "Price is high" and "There are few options" points. Apart from expensive prices, I think it would be better to increase the choices. For example, if it is "MY ~", such as "with CR circuit" lineup that is normally taken.
This review is about item#02492341.
As a replacement part.
From Japan
On 2011-01-27 10:31:52
I would like you to consider bulk selling on the box. Individual packaging takes time and effort to peel off as the number increases, and legs often bend.
This review is about item#02492357.