general purpose relay

ANY Timer Rrelay
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Successful general purpose relay for High-Risk Applications
Reliable general purpose relay Designs for Commercial and Industrial Applications
CHINA – ?¡ãAny Electronics?¡À proudly presents their complete range of general purpose relay . They provide a total set of general purpose relay solutions as well as other interrelated items. These units are observed in different applications for example industrial applications, industrial manage circuits along with OEM Panels. These devices come with fantastic precision and repeatability. The common general purpose relay which might be made lately demand really little panel space.
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Supco 90382 General Purpose Fan Relay, 18 A Load Current, 120 V Coil Voltage, Normally Open and Normally Closed Contacts

  • Electric relay for receiving and controlling electric signals
  • Controls signals for a fan
  • SPST-NO, SPST-NC, SPDT 1 NO/1 NC contact forms
  • Sealed enclosure

The Supco 902 series fan relays receive and control electrical signals for general purpose fan applications. This fan relay has SPST-NO, SPST-NC, SPDT-NO/NC contacts made of silver alloy and coil voltage ratings of 24VAC to 240VAC. It is suitable for use in fan applications.

Specifications
ContactsSPST-NO, SPST-NC, SPDT, 1 NO/1 NC
Contact materialSilver alloy
Power ratings (all forms)125VAC, 18 amp resistive, 12 FLA, 60 LRA, 240/277VAC, 18 amp resistive, 8 FLA, 48 LRA
Special power ratings (form 1 and 2)125VAC, 14 FLA, 84 LRA, 277VAC, 25 amp resistive
Pilot ratings (all forms)3 amp, 277VAC general purpose
250VA at 250VAC
277VA at 277VAC
125VA at 125VAC
Coil voltage rating24, 120, 208/240, 77VAC, 12, 24
Coil frequency50/60 Hz
Coil pick-up voltageAC 85% of nominal, DC 75% of nominal
Coil power ratingAD DC, Inrush 5VA 3VA, Sealed 3VA 3VA

Relay switches (also called an electrical relay or an electrical relay switch) use a small amount of power to control a larger source of power connected to electrical devices such as car motors, computers, and lighting installations. A basic relay switch has a control circuit with an electromagnetic coil and a load circuit with contacts and a lever. When current flows into the relay switch, it moves through the coil and a magnetic field is created, which causes the lever in the load circuit to move between contacts, either turning the device on or off. In a normally open (NO) relay switch, when power is supplied to the relay, the load circuit is closed and the power source connected to the relay is turned on. In a normally closed (NC) relay switch, when power is supplied to the relay, the load circuit is open and the power source connected to the relay is turned off. In other types of relay switches, non-moving parts such as transistors or semiconductors can be used as the control circuit to operate the switching mechanism. Relay switches can be controlled with an external switch, such as a light switch, or they can be connected to an automatically switched power source, such as a car ignition. One relay can operate multiple switches, and multiple relays can be operated with a single switch, with each relay operating independently from the other relays in the system.

Supco manufactures test instruments and replacement parts for heating, ventilation, air conditioning, and refrigeration systems. The company, founded in 1945, is headquartered in Allenwood, NJ.

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Ocran asked what is the formula for setting overload relay of a three phase electric motor.?

If one wants to select an ovverload relay to trip off a three phase electric motor with a rated current of 15amps,what formula is to be used.Klockner Moeller states that the rated current is to be multiplied by 0.58..if that's true what's the formula.

And got the following answer:

No general purpose formulas, but just an eye on physics.... Since thermal relays differ to each other, what matters is to have a look to their current VS time tripping curves... If your induction motor frequently starts at full current (5..6 times the rated current), then you can't load it at rated current for long time otherwise windings temperature will exceed the rated one for sure....suggestion is to multiply motor rated current by 0.75..0.80 If you start your motor once per day and then operate at constant torque and power for hours, then you can load r motor up to its rated current being on the safe side...suggestion is to multiply motor rated current by 0.95


The general purpose relay function particularly well with unique applications that happen to be precise to power distribution and protection. The relays include wide adjustment ranges using a scale that may be simple to study either in three or four digits based on the model. These general purpose relay assistance in increasing the flexibility in the applications, lower the general power and maintenance charges. There are relays that are used for general purposes which are available in trustworthy designs with quick replacement solutions. And there are actually models which can be applied for industrial applications and heavier duty applications that work on huge loads. These solutions are created to meet the lifetime industrial manage requirements of the applications.
Their most current goods are the Time counter, Timer Delay, general purpose relay, Fast Connect Couplings, Electronic Motor Couplings, Aluminum Couplings, Morse Couplings and numerous others. The website gives a detailed description of every single model in numerous categories of general purpose relay couplings and sensors. These merchandise are extremely helpful for high-risk applications. The general purpose relay are also offered with features like many timing ranges and functions. The organization is at present searching for agents and dealers who can promote and sell their factory made merchandise. They are usually on a lookout for developing new and more reputable products according to the needs and needs with the business.

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