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High Reliability Solid State Relays

C$145.00

Item# SSRL660AC75

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Volume Discount Schedule
Quantity Price each
1-9 C$145.00
10-24 C$137.75
25-49 C$134.85
50-99 C$129.05
100-199 C$126.15
200+ C$123.25

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Lead Time ( If not in Stock): 10 weeks

High Reliability Solid State Relays SSRL660AC75 SSRL660AC75
Solid State Relays with AC or DC Control Inputs is rated 4.1 out of 5 by 7.
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  • Current Ratings to 100 Amps
  • Multi-Million Cycle Life
  • Compatible with Temperature Controllers
  • Solid-State, SCR Design
  • Zero Voltage Switching
  • Control ac Lines to 660 Vac
  • AC and DC Control Signal Models
  • LED Input Status Indicator

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


Product Specs

  • Input to Output Isolation 4000 Vrms
  • Input to Output Capacitance 8 pF
  • Maximum Ambient Temperature 80 {C} (176 {F})
  • Maximum Control Voltage 660 Vac
  • Minimum Ambient Temperature -20 {C} (-4 {F})
  • Supply Frequency 47 to 63 Hz

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

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 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 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 5 out of 5 by from Omega Solid Start Relay Over the last 20+ years I have only had to replace two of my four relays! I am happy with these & will continue to buy them again when necessary.
Date published: 2018-02-10
Rated 5 out of 5 by from Great Product I continuously bought this product and I am satisfied with its performance.
Date published: 2016-04-19
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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: AENwlk
Date published: 2020-06-26

For the SSRL240DC25, what is the transfer function of input VDC in to output VAC out? Input 3-32VDC, Output 24-280VAC

Asked by: jgemcg
The input and output are optically isolated so there isn't really a transfer function. The turn on time is 0.5 of the power cycle maximum at the zero cross over firing point.
Answered by: ANB ENG
Date published: 2020-04-17

Can I use this relay to power a 1/2 hp submersible pump? Thanks

Asked by: Greg454
Perhaps. The key is to know how many 'amps' your pump will draw. Check the specifications for your pump and see what that value is. That value should always be lower than the SSR amperage specified value that you choose, but not so close as to cause a surge upon start-up. We recommend a 25% 'window'. e.g. if you choose an SSR that is 10 Amps and your load draws 9 amps, a 10 amp SSR will do, but we suggest that you move up to the next amperage in size due to any 'start-up' surges that may occur.
Answered by: dfrisby88
Date published: 2020-03-09

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

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 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

Please advise what will be a Clear Plastic Safety Cover? we bought this part SSRL240DC25 came without Finger Guards?

Asked by: Vieng
Thank you for your question. I have checked with our Tech Support department and unfortunately, we no longer offer a Clear Plastic Safety Cover. Please contact us if you need any further assistance.
Answered by: Jane
Date published: 2019-02-27
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