EZ240A18 Crydom Co., EZ240A18 Datasheet - Page 18
![RELAY SSR 18A 240VAC AC OUT QC](/photos/9/56/95646/ez_series_sml.jpg)
EZ240A18
Manufacturer Part Number
EZ240A18
Description
RELAY SSR 18A 240VAC AC OUT QC
Manufacturer
Crydom Co.
Series
EZr
Specifications of EZ240A18
Load Current
18A
Circuit
SPST-NO (1 Form A)
Output Type
AC, Zero Cross
Voltage - Input
90 ~ 140VAC
Voltage - Load
24 ~ 280 V
Mounting Type
Chassis Mount
Termination Style
Quick Connect - .250" (6.3mm)
Package / Case
Module
Control Voltage Range
90Vrms To 140Vrms
Operating Voltage Range
24Vrms To 280Vrms
Isolation Voltage
4000Vrms
Control Voltage Type
AC
Relay Terminals
Quick Connect
Load Voltage Rating
24 VAC to 280 VAC
Load Current Rating
18 Amps
Output Device
SCR
Mounting Style
Panel
Turn-on Switching
Random
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
On-state Resistance
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
EZ240A18
Manufacturer:
Crydom
Quantity:
135
Part Number:
EZ240A18S
Manufacturer:
CRYDOM
Quantity:
20 000
18
Crydom offers a broad line of digital I/O modules and mounting
boards. Designed for long, reliable service in demanding industrial
environments, these modules provide optical isolation between
logic-level control systems and external loads, such as motors,
valves, solenoids, resistive heating elements, etc.. Output modules
within the offer can switch loads up to 5 Amps at 24-280 VAC (Form
A, SPST-NO, zero-crossing output), or up to 5A/3A at 100/200 VDC
(Form A SPST-NO). Input modules provide digital feedback to the
control system when the load is energized and are available with
inputs up to 280Vac / 48 VDC, with either a 5 VDC or 24 VDC logic-
level output.
Terminology
Control Voltage Range - the range of voltage when applied across the SSR Input terminals,
will maintain an ON condition across the Output terminals.
Control Current - Current drain on the control source at specified SSR input voltages and
On/Off conditions.
dv/dt - Maximum rate of rise of voltage applied across the output terminals that the SSR can
withstand without turning ON.A characteristic of thyristors used in AC SSRs.
dv/dt Off State (Static) - Specified as a minimum dv/dt withstand capability of SSRs in the
off or blocking state.
Form, Contact - Contact or output configuration, as in Form A for Single Pole, Single Throw,
Normally Open (SPST-NO)
Holding Current - The minimum load current required to maintain a thyristor in its
conducting state.
Input Current (Maximum) - Current drain on the control source at specified SSR input
voltages and On/Off conditions.
Isolation Voltage - The value of dielectric strength measured between the input and output,
input to base, or output to base.
LED - Light Emitting Diode, commonly used for status indication on some models of SSRs
and as the light source in a photocoupler .
Line Voltage Range - The range of voltages applied to the output, over which the SSR will
continuously block or switch and otherwise perform as specified.
Load Current Range - The range of current applied to the output, over which the SSR will
continuously block or switch and otherwise perform as specified.
MOSFET - Metal Oxide Semiconductor Field-Effect Transistor.The control electrode (gate) is
generally isolated from the source electrode by a layer of silicon oxide. A voltage applied
between the gate and the source will provide a current flow between the drain and the source.
Normally Open (NO) - A contact or SSR output that is open when no control power is
present at the input (coil).This is a Form A device.
Normally Closed (NC) - A contact or SSR output that is closed when no control power is
present at the input (coil).This is a Form B device.
Off-State Voltage - The maximum transient voltage that an SSR output can withstand
without malfunction or damage.
Mounting boards available
0.6" Modules
M Series
SM Series
C4 Series
Quads
Questions? Call or e-mail
Glossary of Terms
Industry Standard Packaging
UL Recognized, CSA Certified,
CE Compliant
I/O Modules
Americas
Europe
Number of Modules
4
6
8
16
+44 (0) 1202 606030
24
+1 (877) 502 5500
32
0.6" Modules
M Series
SM Series
C4 Series
Quads
On-State Voltage (Maximum) - The peak voltage that appears across the SSR output
terminals at full rated load current.
Phase Control - Turn-On of a non-zero switching SSR (each half cycle), at a phase angle
determined by the control signal source.
Photocoupler/Isolator - A combination of light-emitting diode and light-sensitive
semiconductor used to transmit information optically while providing electrical isolation.
Commonly used isolating element for coupling the control signal to the output in an SSR.
Power Dissipation - The maximum average power dissipation (Watts) resulting from the
effective voltage drop (power loss) in the SSR output semiconductor.
Rectifier - Asemiconductor used to convert AC power to DC.It allows current to flow in one
direction (forward) and prevents the flow of current in the opposite directions (reverse).
SCR - Silicon Controlled Rectifier. Unidirectional semiconductor of the thyristor family with
latching properties.
Snubber - A resistor-capacitor combination placed across the SSR output terminals to
reduce dv/dt and transients in thyristor circuits.
Solid State Relay (SSR) - Isolated On-Off switch composed of non-moving electrical parts
(primarily semiconductors, transformers and passive components).
Surge Current - The maximum allowable SSR momentary current flow for a specific time
duration.Typically specified as a peak value for one line cycle for AC.
Thermal Resistance - Expressed in degrees Celsius per watt (˚C/W).This value defines the
temperature gradient in the path between the power generated in the output SSR
semiconductor and the final dissipating medium (heat sink/air).
Thyristor - A semiconductor bistable device comprising three or more junctions (PNPN,
etc).The generic name for a family of gate controlled switches including SCRs and triacs.
Triac - Bidirectional semiconductor of the thyristor family. Performance is similar to that of
an inverse pair of SCRs, triggered by a single gate electrode.
Trigger - To turn on an SCR or triac.
Turn-Off Voltage (Must Release) - The voltage applied to the SSR input at or below which
the output must be in the Off-State (Normally-Open).
Turn-On Voltage (Must Operate) - The voltage applied to the SSR input at or above which
the output must be in the on state (Normally-Open).
AC Inputs for 24 V, 120 V, 240 V
DC Inputs for 3.3 to 32 V, 10 to 48 V
4 kV Optical Isolation
Plugs into 0.6" Mounting boards
Built-in LED Status Indicator
Regulated Supply Voltage
4 kV Optical Isolation
Replaceable 2 AG Type Fuse (output modules)
Plugs into C4 Series Mounting boards
4 Input Circuits per module
AC Inputs for 24 V, 120 V, and 240 V
DC Inputs for 4 to 32 V, 10 to 60 V
4kV Optical Isolation
Plugs into mounting boards for quad-pack modules
AC Inputs for 24 V, 120 V, 240 V
DC Inputs for 3.3 to 32 V, 10 to 48 V
4 kV Optical Isolation
Plugs into M Series Mounting boards
AC Inputs for 24 V, 120 V, 240 V
DC Inputs for 3.3 to 32 V, 10 to 48 V
4 kV Optical Isolation
Plugs into SM Series Mounting boards
sales-europe@crydom.com
sales@crydom.com