W6250ASX-1 Magnecraft / Schneider Electric, W6250ASX-1 Datasheet - Page 3

• Manufacturer Part Number: W6250ASX-1
• Description: Solid State Relays 90-280VAC/240AC
• Manufacturer: Magnecraft / Schneider Electric

Specifications of W6250ASX-1

• Load Voltage Rating: 200 V
• Load Current Rating: 50 A
• Relay Type: Solid State
• Termination Style: Solder Leads
• Application: No moving parts, isolate input from output, protects relay from transients, verify presence of input voltage protection from accidential contact
• Contact Form: SPST-NO
• Current, Rating: 50 A
• Current, Surge: 83, 250, 625, 520, 1150 A
• Dielectric Strength: 4000 V (RMS)
• Dimensions: 2.25 in. L x 1.75 in. W x 0.8 in. H
• Function: Zero-Switching
• Mounting Type: Panel
• Standards: UL, CE, CSA, RoHS
• Voltage, Control: 280 VAC
• Voltage, Rating: 280 VAC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 6250ASX-1

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Definition: A SSR (solid state relay) can perform many tasks that an EMR (electromechanical relay) can perform. The
SSR differs in that it has no moving mechanical parts within it. It is essentially an electronic device that relies on the
electrical, magnetic and optical properties of semiconductors, and electrical components to achieve its isolation and
relay switching function.
Principle of Operation: Solid State Relays are similar to electromechanical relays, in that both use a control circuit
and a separate circuit for switching the load. When voltage is applied to the input of the SSR, the relay is energized
by a light emitting diode. The light from the diode is beamed into a light sensitive semiconductor which, in the case
of zero voltage crossover relays, conditions the control circuit to turn on the output solid state switch at the next zero
voltage crossover. In the case of nonzero voltage crossover relays, the output solid state switch is turned on at the
precise voltage occurring at the time. Removal of the input power disables the control circuit and the solid state
switch is turned off when the load current passes through the zero point of its cycle.
Applications: Since its introduction the SSR, as a technology, has gained acceptance in many areas, which had
previously been the sole domain of the EMR or the Contactor. The major growth areas have come from Industrial
Process Control applications; particularly heat/cool temperature control, motors, lamps, solenoids, valves, and
transformers. The list of applications for the SSR is almost limitless.
The following are typical examples of SSR applications: industrial automation, electronic appliances, industrial
appliances, packaging machines, tooling machines, manufacturing equipment, food equipment, security systems,
industrial lighting, fire and security systems, dispensing machines, production equipment, on-board power control,
traffic control, instrumentation systems, vending machines, test systems, office machines, medical equipment, display
lighting, elevator control, metrology equipment, and entertainment lighting.
Advantages: When used correctly in the intended application, the SSR provides many of the characteristics that are
often difficult to find in the EMR; a high degree of reliability, long service life, significantly reduced electromagnetic
interference, fast response and high vibration resistance are significant benefits of the SSR. The SSR has no moving
parts to wear out or arcing contacts to deteriorate, which are often the primary cause of failure with an EMR.
Thermal Considerations: One of the major considerations when using a SSR is properly managing the heat that is
generated when switching currents higher than about 5 amps. In this scenario one must mount the base plate of the
SSR onto a good heat conductor, typically aluminum; along with utilizing a good thermal transfer medium such as
thermal grease or heat transfer pad. Using this technique, the SSR case to heat sink thermal resistance is reduced to
a negligible value of 0.1 ˚C/W.
AUTOMATION
Solid State Relays – Application Data
INDUSTRIAL
• Long life (reliability) > 10
• Zero voltage turn on, low EMI / RFI
• Shock and Vibration resistant
• Random turn-on, proportional control
• No contact bounce
SYSTEMS
ALARM
APPLIANCES
ELECTRONIC
9
operations
APPLIANCES
INDUSTRIAL
• Arc-less switching
• No acoustical noise
• Microprocessor compatible
• Fast response
• No moving parts
EQUIPMENT
MEDICAL
MACHINES
PACKING
M agne cr aft S olu tion Guide 1 0 5 A
Magnec r af t S olut ion G uide 1 0 5 A
MACHINES
TOOLING