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Solid State Relays with AC or DC Control Inputs

C$48.34

Item# SSRL240DC10

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 C$48.34
10-24 C$45.92
25-49 C$44.96
50-99 C$43.02
100-199 C$42.06
200+ C$41.09

In stock

Lead Time (If not in stock): 24 weeks
Solid State Relays with AC or DC Control Inputs SSRL240DC10 SSRL240DC10
  • Current Ratings to 100 Amps
  • Multi-Million Cycle Life
  • Compatible with Temperature Controllers
  • Solid-State, SCR Design

SSRL240DC10 Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

AC Line Voltage
Control Signal Type
Control Voltage
Nominal Load Current
Phase
Features


The Omega's SSRL series of solid state relays are used to control large resistance heaters in conjunction with temperature controllers. Solid state relays are SPST, normally open switching devices with no moving parts, capable of millions of cycles of operation. By applying a control signal, an SSR switches ON the ac load current, just as the moving contacts do on a mechanical contactor. Three-phase loads can be controlled using 2 or 3 SSR’s. Use 3 SSR’s for Y or star 3-phase loads using a neutral line. Two SSR’s will control “delta” loads with no neutral line. Three solid state relays are also used when there is no neutral load to provide redundancy and extra assurance of control.

'Switching' takes place at the zero voltage crossover point of the alternating current cycle. Because of this, no appreciable electrical noise is generated, making SSR’s ideal for environments where there are apparatuses susceptible to RFI.

Common Specifications
Operating Temperature: -20 to 80°C (-5 to 175°F)
Storage Temperature:-40 to 80°C (-40 to 175°F)
Isolation: 4000 Vrms, input to output; 2500 Vrms input/output to ground
Capacitance: 8 pF, input to output (max)
Line Frequency Range: 47 to 63 Hz
Turn-On Time: 20 ms, ac; 05 cycle, dc
Turn-Off Time: 30 ms, ac; 05 cycle, dc

These SSR’s are of the twin SCR type, inherently more reliable and capable of higher overloads before failure than triacs. Heat is developed in a solid state relay due to the nominal voltage drop across the switching device. To dissipate the heat, an SSR must be mounted on a finned heat sink or aluminum plate. An SSR should be located where the ambient temperature is relatively low, since the current switching rating is lowered as the temperature increases. Another SSR characteristic is a small leakage current across the output when the relay is open. Because of this, a voltage will always exist on the load side of the device.

In comparing SSR’s with mechanical contactors, the SSR has a cycle life many times that of a comparably priced contactor. However, SSR’s are more prone to failure due to overload and improper initial wiring. Solid state relays can fail, contact closed, on overload circuits. It is essential that a properly rated, fast blowing I2T fuse be installed to protect the load circuit.

Finned heat sinks are anodized fabrications that come complete with tapped mounting holes and screws. See thermal rating curves and ordering instructions for proper selection.

All SSRL series relays come with a thermally conductive pad mounted on the baseplate. This will significantly improve the thermal conductivity between the heat sink and SSR baseplate. It is also suggested that 10-inch-pounds of torque be used on the SSR mounting screws.





Output Specifications for Vac and Vdc Input Models
Specifications10 Amp25 Amp50 Amp75 Amp100 Amp
Max On State Current10 A25 A50 A75 A100 A
Max On State Current100 mA
Max 1-Cycle Surge150 A300 A750 A1000 A1200 A
Max 1 sec Surge30 A75 A150 A225 A300 A
12T (60 Hz), A2sec416937245850006000


SSR240 Series Electrical Specifications
 Input-Control SignalOutput
Model No.TypeControl
Signal
Voltage
Control
Signal
Turn-On
Control
Signal
Turn-Off
Max
Input
Current
Peak
Voltage*
(60 Sec. Max.)
SSRL240AC10
SSRL240AC25
SSRL240AC50
SSRL240AC75
SSRL240AC100
ac
Control
Signal
90 to 280 Vac90 Vac10 Vac10 mA800 V
SSRL240DC10
SSRL240DC25
SSRL240DC50
SSRL240DC75
SSRL240DC100
dc
Control
Signal
3 to 32 Vdc3 Vdc1 Vdc14 mA800 V
SSRL660AC50
SSRL660AC75
SSRL660AC100
ac
Control
Signal
90 to 280 Vac90 Vac10 Vac10 mA1200 V
SSRL660DC50
SSRL660DC75
SSRL660DC100
dc
Control
Signal
4 to 32 Vdc4 Vdc1 Vdc14 mA1200 V
*Transients above table value should be suppressed.

SSR240 Series Output-Vac Load Specifications
Model No.Nominal
ac Line
Voltage
Nominal
Load
Current
Max.
Contact
Voltage Drop
Max. Off-State Leakage
(25°C max. ambient)
120 Vac240 Vac440 Vac
SSRL240AC10
SSRL240AC25
SSRL240AC50
SSRL240AC75
SSRL240AC100
24 to 280 Vac10 A
25 A
50 A
75 A
100 A
1.6 V0.1 mA0.1 mAN/A
SSRL240DC10
SSRL240DC25
SSRL240DC50
SSRL240DC75
SSRL240DC100
24 to 280 Vac10 A
25 A
50 A
75 A
100 A
1.6 V0.1 mA0.1 mAN/A
SSRL660AC50
SSRL660AC75
SSRL660AC100
48 to 660 Vac50 A
75 A
100A
1.6 V0.25 mA0.25 mA0.25 mA
SSRL660DC50
SSRL660DC75
SSRL660DC100
48 to 660 Vac50 A
75 A
100 A
1.6 V0.25 mA0.25 mA0.25 mA
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Rated 5 out of 5 by from Compact and Functional Easy to use and inexpensive. Good documentation as always.
Date published: 2016-03-05
Rated 1 out of 5 by from Defective I spoke with one of your engineers and was advised to purchase this model of the solid state relay. When I received it I found it would not do anything. I took one off another heat treat furnace and it worked. I contacted Allen Courtney. Because I failed to write down the name of the engineer he refused to replace it or give a refund. Lost a customer.
Date published: 2017-06-09
Rated 5 out of 5 by from Good Relays Our company use a lot of Omega products including these inexpensive relays. We have not encountered any problems with these. As with all electronic components, heat is number one killer. Safeguarding them will increase service life.
Date published: 2018-07-17
Rated 4 out of 5 by from Work very well We have used these SSR in our Chemical Engineering labs for many years. Built many projects based on these and have never had a failure. The indicator LED is very handy in debugging computer programs to make sure you are indeed sending correct information from the computer.
Date published: 2017-01-11
Rated 4 out of 5 by from They work All ten of the ones I've bought have worked perfectly without any problems.
Date published: 2016-07-27
Rated 5 out of 5 by from Excellent components Very reliable relays used in our estate automation.
Date published: 2023-12-20
Rated 5 out of 5 by from Right part, right price, delivered quick! Part worked as described, it was delivered quick, and the price was right!
Date published: 2023-06-23
Rated 4 out of 5 by from Good Solid State Relays Good and well made product that works and has minimal issues.
Date published: 2021-03-05
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loading all QA

Does the PCM-4 Pulse Control Module work on this SSR?

Asked by: Brandt
Thank you for your inquiry. Yes, the PCM-4 is compatible.
Answered by: Application Engineer JB
Date published: 2020-02-12

What is the min latch/unlatch amperage for this relay? Assume 5 Vdc control voltage.

Asked by: joboyle
Hi joboyle, Thank you for the inquiry. Latch / Unlatch levels vary depending on the model and are covered in following manual; https://assets.omega.com/manuals/M3813.pdf Best regards, OMEGA
Answered by: NorwalkAE_RS
Date published: 2020-06-26

I noticed that the FB-1 fuse holder is discontinued. Do you offer any other fuse holders that work with this fuse?

Asked by: Leah
The FB-2 can be used as well for the KAX-10 fuses.
Answered by: ApplicationsEngineerANB
Date published: 2024-02-14

Hi, Can I use three single solid state relays to power a 3 phase heater coil? Thank you! Paul

Asked by: paul27
You can use three separate solid state relays to power a 3 phase heater. You would wire in parallel the control signal to each relay.
Answered by: RD Engineer
Date published: 2020-02-13

Is a CN743 PID compatible with a SSRL240AC25 SSR? Thank you.

Asked by: BAMA HEAT
Thank you for your inquiry. Yes, the CN743 PID is compatible with SSRL240AC25 SSR.
Answered by: NorwalkAE_SP
Date published: 2024-02-07

What are the dimensions?

Asked by: mark krzyzaniak
Hi, thanks for connecting with Omega. Our Tech Support has sent you the manual with the dimensions. Please contact us anytime for any further assistance.
Answered by: Jane
Date published: 2019-05-22

SSRL240AC10 will use this in series with a AC motor the output will switch a low voltage ( less than 3 vdc ) line to ground will this work?

Asked by: Grandbend
Hi Grandbend, On this model the input and the output are AC voltage only. So this is not compatible with the application. Please email a request for technical support to TEMP@OMEGA.COM. Best regards OMEGA
Answered by: NorwalkAE_RS
Date published: 2021-12-20
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