240D25 OPTO 22, 240D25 Datasheet - Page 16
![SSR, PANEL MOUNT, 280VAC, 32VDC, 25A](/photos/19/31/193130/4734311_sml.jpg)
240D25
Manufacturer Part Number
240D25
Description
SSR, PANEL MOUNT, 280VAC, 32VDC, 25A
Manufacturer
OPTO 22
Specifications of 240D25
Control Voltage Range
3VDC To 32VDC
Operating Voltage Range
24VAC To 280VAC
Load Current
25A
Isolation Voltage
4000Vrms
Control Voltage Type
DC
Relay Terminals
Screw
Peak Surge Current
250A
Brand/series
DC Series
Current, Rating
25 A
Current, Surge
250 A (Max.)
Dimensions
1.75 in. W x 2.25 in. H x 0.77 in. T
Function
Power
Mounting Type
PCB
Relay Type
Solid State
Standards
UL, CSA, CE
Termination
Quick Connect
Voltage, Control
240 VAC
Voltage, Drop, On-state
1 VAC
Control Voltage Max
32V
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
PAGE
16
Sample Calculation 2
240-volt,18-amp load, 25 °C ambient air temperature
Model: 240D45
See the last two columns of the table on
the bottom of the table.
Dissipation: 0.9 watts/amp
Thermal resistance: 0.67 °C/watt
Maximum junction temperature: 110 °C
The calculation would be as follows:
Duty Cycle Calculation
When solid-state relays are operated in an on/off mode, it may be advantageous to calculate the RMS value of the current through
the SSR for heat sinking or determining the proper current rating of the SSR for the given application.
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
© 2006–2011 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com •
I
T
T
I
RMS
ON
1
2
= Time current is on
= Time current is off
= RMS value of load current during on period
= RMS value of load or SSR
page 4
for thermal resistance and dissipation values for the 240D45. Also, see the note at
I
RMS
800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
=
(I
This calculation indicates that you should
select a heat sink with a thermal resistance
of less than 4.6 °C/watt.
T
ON
1
)
+ T
2
x T
2
1
Solid-State Relays