Part Number: FTR-LYCA024Y

Manufacturer: Fujitsu

Description: General Purpose Relays 24 VDC 1 Form C Silver Alloy Contact

Shipped from: Shenzhen/HK Warehouse

Stock Available: Check with us

The FTR-LYCA024Y is a Power Relay 24VDC 6A SPDT (28x5x15)mm THT with a non-latching relay structure and an SPDT coil arrangement. Its dimensions are 28x5x15 millimeters. This power relay has an operating temperature range of -40 to 85 degrees Celsius and has a coil resistance of 3.388 kOhm.

FTR-LYCA024Y Features and Specification

Case/Package SIP
Contact Material Cadmium, Silver, Tin
Mount PCB, Through Hole
Number of Pins 5
Weight 5 g
Coil Current 7.08 mA
Coil Power 170 mW
Coil Resistance 3.388 kΩ
Coil Voltage (AC) 24 V
Coil Voltage (DC) 24 V
Contact Current Rating 6 A
Contact Resistance 100 mΩ
Max Current Rating 6 A
Max Operating Temperature 85 °C
Max Voltage Rating (AC) 250 V
Min Operating Temperature -40 °C
Operate Time 8 ms
Power Consumption 170 mW
Schedule B 8536490050
Termination Solder
Throw Configuration SPDT
Voltage Rating (AC) 250 V
Depth 5 mm
Height 15 mm
Length 28 mm
Radiation Hardening No
RoHS Compliant

Frequently Asked Questions

What Is a Power Relay?

Power relays open and close circuits using electromagnets. An electromagnet coil, an armature, a spring, and one or more contacts are the fundamental components that make up the construction of a relay. When the power relay is in the off position, the circuit will not be completed because it was meant to be open generally.

The electromagnet draws in the armature, a movable arm often formed of iron, when power is supplied to the power relay, typically done through a battery as the power source. The spring-held armature is dragged toward the coil until it touches a contact, completing the circuit. The spring was responsible for holding the armature in place. When the relay is in its normally closed position, the coil will draw the armature away from the contact, allowing current to flow through the relay.

A power relay can be activated with a very modest voltage, but it can also conduct a significantly higher voltage when necessary. Because of this property, power relays are utilized in various applications, including audio amplification, automobile electronics, and telephone systems, amongst others. In addition to their use in early computer and telegraph systems, power relays were also utilized to transmit signals from one circuit to the next.

What distinguishes latching relays from non-latching relays?

One type of control device is known as a latching relay, which maintains its condition after being triggered. Because of this characteristic, some people refer to these as keep relays, stay relays, or impulse relays. This relay can be used in situations where the amount of power consumed and lost needs to be restricted. This relay’s operation can be carried out manually, wirelessly, in response to impulses, or using a variety of control inputs. Remote operation is also possible. These relays are also known as impulse and bistable relays, amongst other names.

When a signal with a mains voltage is applied to the terminals of the latching relay’s coil, the relay will operate by opening or closing its contact each time the signal is applied. One of the push buttons that are parallelly connected can be pressed to produce the signal, and this can be done by selecting one of the buttons. Versatile relays help operate the zone’s lighting circuit from various locations.

When these relays are used in lighting circuits in place of contractors, there is no need for the coil to be powered-driven, which results in a power savings of 2W for each relay. The amount of universal energy that can be saved over one year by each relay is greater than 5 kWh. These relays control the lighting with various push buttons at various locations. A quick understanding of the circuit can be achieved by using parallel keys. Therefore, this is mainly utilized in lighting plants that present more challenges.

Non-Latching Relays

Relays that do not have a latching mechanism can be found in the NC position, and they will maintain this orientation even without an external power supply. The relay turns to NO and remains there when electricity is applied to the coil. After the power is switched off, the non-latching relay will return to its original, static NC position. Push-button applications, such as keyboards and the buttons on microcontrollers, are excellent candidates for non-latching relays.

Non-latching relays are ideal for use in a wide variety of applications due to their high level of durability and resistance to wear. These relays can be found in various types of equipment, such as vehicle engines, household appliances, industrial machinery, and medical and telecommunications equipment.

Both latching and non-latching relays perform similar functions, but when the power is cut, they behave very differently. A latching relay will remember its last state between power cycles as opposed to a non-latching relay, which will reset to its initial state upon power restoration.

Difference between Latching and Non-Latching Relays

Latching Relay Non-Latching Relay
A latching relay will hold its position even after its power is turned off. A relay that doesn’t latch returns to its original setting.
This relay goes under several other names, including “maintain impulse,” “bi-stable,” and “lock up the relay.” Commonly, it is referred to as a mechanical relay.
Power consumption is reduced because of the relay’s latching mechanism. Power consumption is higher due to this relay.
The relays’ noiseless switching is a huge plus when used in domestic settings. These relays produce some noise during operation.
Latching relays are not designed for highly delicate situations, unlike non-latching relays. The latching relay’s sensitivity drops significantly when it’s anxious. Compared to latching relays, the sensitivity of non-latching ones is far higher.
Indicating knobs on the latching relays allows for hands-on manipulation of the relay’s state. This relay need not be used to denote a knob function.
The latching relay has reached the end of its useful life. The non-latching relay provides longer service life.
The cost of these relays has increased. Unlike their latching counterparts, non-latching relays are pretty cheap.
Due to their high-efficiency level, these relays can only be used in a limited number of situations. Everywhere you look in electronics and automation, you’ll find non-latching relays in use.


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