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Solid State Relays

SSRL240 and SSRL660 Series   
1 year warranty RoHS
 
High Performance Solid State Relays
SSRL240 and  SSRL660 Series:Solid State Relays
Click for larger image.
   
$26.00  SSRL240DC25
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
Thermal Conductive Pad Included

View related products - Industrial pH Instrumentation and Electrodes

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The 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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Most Popular Models Highlighted!
 Part Number   Availability   Price   Description RoHS   Qty.
Click to expand/minimize a list of what others bought with the SSRL240AC10  SSRL240AC10 In Stock   $25.00    ac Control Signal(280Vac line) 10 A Nominal rating RoHS compliancy undetermined
Click to expand/minimize a list of what others bought with the SSRL240AC25  SSRL240AC25 In Stock   $30.00    ac Control Signal(280Vac line) 25 A Nominal rating RoHS compliancy undetermined
Click to expand/minimize a list of what others bought with the SSRL240AC50  SSRL240AC50 In Stock   $43.00    ac Control Signal (280Vac line) 50 A Nominal rating RoHS compliancy undetermined
    SSRL240AC75 6 Weeks   $65.00    ac Control Signal (280Vac line)75 A Nominal rating RoHS compliancy undetermined
    SSRL240AC100 In Stock   $80.00    ac Control Signal (280Vac line) 100 A Nominal rating RoHS compliancy undetermined
Click to expand/minimize a list of what others bought with the SSRL240DC10  SSRL240DC10 3 Weeks   $22.00    dc Control Signal (280 Vac line) 10 A Nominal rating RoHS compliancy undetermined
Click to expand/minimize a list of what others bought with the SSRL240DC25  SSRL240DC25 In Stock   $26.00    dc Control Signal (280 Vac line) 25 A Nominal rating RoHS compliancy undetermined
Click to expand/minimize a list of what others bought with the SSRL240DC50  SSRL240DC50 In Stock   $37.00    dc Control Signal (280 Vac line) 50 A Nominal rating RoHS compliancy undetermined
Click to expand/minimize a list of what others bought with the SSRL240DC75  SSRL240DC75 In Stock   $61.00    dc Control Signal (280 Vac line) 75 A Nominal rating RoHS compliancy undetermined
Click to expand/minimize a list of what others bought with the SSRL240DC100  SSRL240DC100 In Stock   $76.00    dc Control Signal (280 Vac line) 100 A Nominal rating RoHS compliancy undetermined
    SSRL660AC50 In Stock   $48.00    ac Control Signal (660 Vac line) 50 A Nominal rating RoHS compliancy undetermined
    SSRL660AC75 In Stock   $99.00    ac Control Signal (660 Vac line)75 A Nominal rating RoHS compliancy undetermined
    SSRL660AC100 7 Weeks   $84.00    ac Control Signal (660 Vac line) 100 A Nominal rating RoHS compliancy undetermined
Click to expand/minimize a list of what others bought with the SSRL660DC50  SSRL660DC50 In Stock   $45.00    dc Control Signal (660 Vac line) 50 A Nominal rating RoHS compliancy undetermined
Click to expand/minimize a list of what others bought with the SSRL660DC75  SSRL660DC75 7 Weeks   $65.00    dc Control Signal (660 Vac line) 75 A Nominal rating RoHS compliancy undetermined
Click to expand/minimize a list of what others bought with the SSRL660DC100  SSRL660DC100 In Stock   $85.00    dc Control Signal (660 Vac line) 100 A Nominal rating RoHS compliancy undetermined
 Heat Sinks
Click to expand/minimize a list of what others bought with the FHS-1  FHS-1 In Stock   $20.00    Finned Heat Sink 2°C/W RoHS compliant
Click to expand/minimize a list of what others bought with the FHS-2  FHS-2 In Stock   $20.00    Finned Heat Sink 1.2°C/W RoHS compliant
Click to expand/minimize a list of what others bought with the FHS-6  FHS-6 In Stock   $25.00    Finned Heat Sink .7°C/W Not RoHS compliant
 Fuses
Click to expand/minimize a list of what others bought with the KAX-10  KAX-10 In Stock   $35.00    10 A 14 x 51 mm (0.6 x 2'') RoHS compliant
Click to expand/minimize a list of what others bought with the KAX-25  KAX-25 In Stock   $39.00    25 A 14 x 51 mm (0.6 x 2'') RoHS compliant
Click to expand/minimize a list of what others bought with the KAX-30  KAX-30 In Stock   $60.00    30 A 14 x 51 mm (0.6 x 2'') RoHS compliant
Click to expand/minimize a list of what others bought with the KAX-50  KAX-50 In Stock   $110.00    50 A 21 x 81 mm (0.8 x 3.2'') RoHS compliant
    KBH-50 In Stock   $75.00    50 A 18 x 81 mm (0.7 x 3.2'') RoHS compliant
    KBH-70 In Stock   $85.00    70 A 19 x 92 mm (0.7 x 3.6'') RoHS compliant
 Fuse Holders
Click to expand/minimize a list of what others bought with the FB-1  FB-1 In Stock   $30.00    Single fuse, for KAX-10, KAX-25, KAX-30 RoHS compliant
Click to expand/minimize a list of what others bought with the FB-2  FB-2 In Stock   $57.00    Two fuse, for KAX-10, KAX-25, KAX-30 RoHS compliant
Click to expand/minimize a list of what others bought with the FB-3  FB-3 In Stock   $90.00    Three fuse, for KAX-10, KAX-25, KAX-30 RoHS compliant
Click to expand/minimize a list of what others bought with the BS-101  BS-101 In Stock   $80.00    Single fuse, for KAX-50, KAX-70, KAX-100, KBH (all models) RoHS compliant
 Shunt Resistors for Controllers with AC SSR (Triac) Output
    SSRR20-12 In Stock   $8.00    2000 ohms, 12 watts Compliant upon request
    SSRR20-50 In Stock   $10.00    2000 ohms, 50 watts Compliant upon request
    SSRR15-12 In Stock   $6.00    1500 ohms, 12 watts Compliant upon request
    SSRR15-50 In Stock   $9.00    1500 ohms, 50 watts Compliant upon request
All dollar amounts on this site are shown in US currency.

 Note: All SSRL Series come with thermally conducting pad. Reference SSR330 Series for additional heat sinks.
 Ordering Example: (1) SSRL240DC25 Solid state relay, $26.00
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Option Descriptions
(1) Nominal AC Line Voltage Range
  Select
240 for 24 to 280 Vac
660 for 48 to 660 Vac
(2) Type
  Select
AC for AC control signal
DC for DC control signal
(3) Nominal Load Current
  Select
10 for 10 AMP
25 for 25 AMP
50 for 50 AMP
75 for 75 AMP
100 for 100 AMP
 NOTE: All combinations may not be valid, check spec sheet for valid part numbers.


   
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