Form 859-011127
SOLID-STATE RELAYS
DATA SHEET
page 1/13
Opto22 43044 Business Park Drive Temecula, CA 92590 Phone: (909)695-3000 (800)321-OPTO Fax: (909)695-3095 Internet: www.opto22.com
Inside Sales: (800)452-OPTO Product Support: (800)TEK-OPTO (909)695-3080 Fax: (909)695-3017 E-mail: support@opto22.com FaxBack: (800)474-OPTO
In 1974, Opto 22 introduced the first liquid epoxy-filled
line of power solid-state relays (SSR). This innovation in SSR
design greatly improved the reliability and reduced the cost
of manufacturing. At that time, we also incorporated into our
manufacturing process 100% testing of every relay produced
under full load conditions. By 1978, Opto 22 had gained such
I n d e x
Power Series
P Series MP Series
Z Series
Overview
Description Page
Introduction 1
All Models: General Specifications 2
120/240 Volt AC Power Series: General
Specifications 3
120/240 Volt AC Power Series: Surge Current
Data, Thermal Data, and Dimensions 4
480/575 Volt AC Power Series: General
Specifications 5
120/240 Volt AC Power Series Plastic Package
(Z Series): General Specifications 6
AC Power Printed Circuit Series: General
Specifications 7
DC Switching Series: General Specifications 8
APPLICATION TIPS
Heat Sink Calculation, Duty Cycle Calculation 10
Transformer Loads, Solenoid Loads, and
Lamp Loads 11
Solid-State Relays in Series, Lamp Loads,
Heater Loads 12
Motor Loads 13
a reputation for reliability that we were recognized as the world’s
leading manufacturer of solid-state relays. Through continuous
manufacturing improvements and the same 100% testing policy
established 22 years ago, Opto 22 is still recognized today for the
very high quality and reliability of its complete line of solid-state
relays.
Form 859-011127
SOLID-STATE RELAYS
DATA SHEET
page 2/13
Opto22 43044 Business Park Drive Temecula, CA 92590 Phone: (909)695-3000 (800)321-OPTO Fax: (909)695-3095 Internet: www.opto22.com
Inside Sales: (800)452-OPTO Product Support: (800)TEK-OPTO (909)695-3080 Fax: (909)695-3017 E-mail: support@opto22.com FaxBack: (800)474-OPTO
• 4,000 V optical isolation input to output
• Zero voltage turn-on
• Turn-on time: ½ cycle maximum
• Turn-off time: ½ cycle maximum
• Operating frequency: 25 to 65 Hz
(operates at 400 Hz with six times off-state leakage)
• Coupling capacitance input to output: 8 pF maximum
All Models
Specifications
• DV/DT Off-state: 200 volts per microsecond
• DV/DT commutating: snubbed for rated current
at 0.5 power factor
• UL recognized
• CSA certified
• CE component
• See Opto 22 form #986 for torque specifications.
Optional plastic safety cover installed
on a Power Series SSR
A plastic safety cover (Opto 22 part number SAFETY COVER)
is optionally available for Opto 22 Power Series SSRs. The safety
cover reduces the chance of accidental contact with relay
terminals, while providing access holes for test instrumentation.
Safety Cover for Power Series SSRs
Form 859-011127
SOLID-STATE RELAYS
DATA SHEET
page 3/13
Opto22 43044 Business Park Drive Temecula, CA 92590 Phone: (909)695-3000 (800)321-OPTO Fax: (909)695-3095 Internet: www.opto22.com
Inside Sales: (800)452-OPTO Product Support: (800)TEK-OPTO (909)695-3080 Fax: (909)695-3017 E-mail: support@opto22.com FaxBack: (800)474-OPTO
AC Power Series - 120/240 Volt
Opto 22 provides a full range of power series relays with a wide variety of voltage
(110–575) and current options (3–45 amps). All Power Series relays feature 4,000 volts of
optical isolation and have a high PRV rating.
Specifications
Model
Number
Nominal
AC Line
Vol tage
Nominal
Current
Rating
(Amps)
1 cycle
Su rge
(Amps)
Peak
Nomin al
Signal
Input
Resi stance
(Ohms)
Signal
Pi ck-u p
Vo l t a g e
Signal
Drop-out
Vol ta ge
Peak
Repetitive
Vo l t a g e
Maximum
Maximum
Output
Voltag e
Drop
Off-State
Leakage
(mA)
Maximum
**
Operating
Vol tage
Range
(Volts AC)
I2t Rating
t=8.3
(ms)
Isolation
Vol tage
qjc*
(°C/Watt)
Dissipation
(Watts/Amp)
120D 3 12 0 3 85 100 0 3VDC
(32V allowed) 1 VDC 600 1.6 volts 2.5mA 12-140 30 4,000VRMS 11 1.7
120D 10 120 10 110 1000 3VDC
(32V allowed) 1 VDC 600 1.6 volts 7 mA 12-140 50 4,000VRMS 1.3 1.6
120D 25 12 0 25 250 1000 3VDC
(32V allowed) 1 VDC 600 1.6 volts 7 mA 12-140 250 4,000VRMS 1.2 1. 3
120D 45 120 45 650 1000 3VDC
(32V allowed) 1 VDC 600 1.6 volts 7 mA 12-140 1750 4,000VRMS 0.67 0 .9
240D 3 240 3 85 1000 3VDC
(32V allowed) 1 VDC 600 1.6 volts 5 mA 24-280 30 4,000VRMS 11 1.7
240D10 240 10 110 1000 3VDC
(32V allowed) 1 VDC 600 1.6 volts 14 mA 24-280 50 4,000VRMS 1.3 1.6
240D25 240 25 250 1000 3VDC
(32V allowed) 1 VDC 600 1.6 volts 14 mA 24-280 250 4,000VRMS 1.2 1. 3
240D45 240 45 650 1000 3VDC
(32V allowed) 1 VDC 600 1.6 volts 14 mA 24-280 1750 4,000VRMS 0.67 0 .9
380D25 380 25 250 1000 3VDC
(32V allowed) 1 VDC 800 1.6 volts 12 mA 24-420 250 4,000VRMS 1.2 1. 3
380D45 380 45 650 1000 3VD C
(32V allowed) 1 VDC 800 1.6 volts 12 mA 24-420 1750 4,000VRMS 0.67 0 .9
120A 10 120 10 110 33K 85 VAC
(280 al lowed) 10 VAC 600 1.6 volts 7 mA 12-140 50 4,000VRMS 1.3 1.6
120A 25 12 0 25 250 33K 85 VAC
(280 al lowed) 10 VAC 600 1.6 volts 7 mA 12-140 250 4,000VRMS 1.2 1.3
240A10 240 10 110 33K 85 VAC
(280 al lowed) 10 VAC 600 1.6 volts 14 mA 24-280 50 4,000VRMS 1.3 1.6
240A25 240 25 250 33K 85 VAC
(280 al lowed) 10 VAC 600 1.6 volts 14 mA 24-280 250 4,000VRMS 1.2 1.3
240A45 240 45 650 33K 85 VAC
(280 al lowed) 10 VAC 600 1.6 volts 14 mA 24-280 1750 4,000VRMS 0.67 0.9
Notes: q jc* = Thermal resistance junction to base. Maximum junction temperature i s 110°C.
** Operating Frequency: 25 to 65 Hz (operates at 400 Hz with 6 times the offstate leakage)
Form 859-011127
SOLID-STATE RELAYS
DATA SHEET
page 4/13
Opto22 43044 Business Park Drive Temecula, CA 92590 Phone: (909)695-3000 (800)321-OPTO Fax: (909)695-3095 Internet: www.opto22.com
Inside Sales: (800)452-OPTO Product Support: (800)TEK-OPTO (909)695-3080 Fax: (909)695-3017 E-mail: support@opto22.com FaxBack: (800)474-OPTO
Surge Current Data
Thermal Ratings
AC Power Series - 120/240 Volt (Continued)
Specifications:
Dimensional Drawings
Time
(Seconds)
Time*
(Cycles)
3-Amp
Peak
Amps
10-Amp
Peak
Amps
25-Amp
Peak
Amps
45-Amp
Peak
Amps
0.017 1 85 110 250 650
0.050 3 66 85 175 420
0.100 6 53 70 140 320
0.200 12 45 60 112 245
0.500 30 37 50 80 175
1 60 31 40 67 134
2 120 28 33 53 119
3 180 27 32 49 98
4 240 26 31 47 95
5 300 25 30 45 91
10 600 24 28 42 84
Note: *60 HZ.
Form 859-011127
SOLID-STATE RELAYS
DATA SHEET
page 5/13
Opto22 43044 Business Park Drive Temecula, CA 92590 Phone: (909)695-3000 (800)321-OPTO Fax: (909)695-3095 Internet: www.opto22.com
Inside Sales: (800)452-OPTO Product Support: (800)TEK-OPTO (909)695-3080 Fax: (909)695-3017 E-mail: support@opto22.com FaxBack: (800)474-OPTO
Surge Current Data
Thermal Ratings
DC SERIES: The DC Series delivers isolated DC control to large OEM customers worldwide.
AC SERIES: The AC Series offers the ultimate in solid-state reliability. All AC power series
relays feature a built-in snubber and zero voltage turn-on. Transient proof models offer self-
protection for noisy electrical environments.
Dimensional
Drawings
AC Power Series - 480/575 Volt
Specifications
Mod el
Number
Nominal
AC L ine
Voltage
Nominal
Current
Rating
(Amp s)
1 cycle
Surge
(Amps)
Peak
Nominal
Signal
Input
Resistan ce
(Oh m s)
Signal
Pick-up
Voltag e
Signal
Drop-out
Voltage
Peak
Repetitive
Voltage
Maxim um
Maximum
Ou tp ut
Volta ge
Drop
Off-S tate
Leakage
(mA)
Maximum
**
Operating
Vo lta ge
Range
(Volts AC)
I2t Rating
t=8.3
(ms )
Isolation
Voltag e
q
jc*
(°C/Watt)
Dissipatio n
(Watts/Amp)
480D10-12 480 10 110 1000
3VDC
(32V
Allo wed)
1 VDC 1200 3.2 volts 11 mA 100-530 50 4,000VRMS 1.2 2.5
480D15-12 480 15 150 1000
3VDC
(32V
Allo wed)
1 VDC 1200 3.2 volts 11 mA 100-530 50 4,000VRMS 1.2 2.5
480D25-12 480 25 250 1000
3VDC
(32V
Allo wed)
1 VDC 1000 1.6 volts 11 mA 100-530 250 4,000VRMS 1.3 1.3
480D45-12 480 45 650 1000
3VDC
(32V
Allo wed)
1 VDC 1000 1.6 volts 11 mA 100-530 1750 4,000VRMS 0.67 0.9
575D15-12 575 15 150 1000
3VDC
(32V
Allo wed)
1 VDC 1200 3.2 volts 15 mA 100-600 90 4,000VRMS 1.2 2.5
575D45-12 575 45 650 1000
3VDC
(32V
Allo wed)
1 VDC 1000 1.6 volts 15 mA 100-600 1750 4,000VRMS 0.67 0.9
Note:
q
jc* = Thermal resistance junction to base. Maximum junction temperature is 110°C.
** Operating Fre que ncy: 25 to 65 Hz (op erates at 40 0 Hz with 6 times the offstate leakage)
Time
Second
Time***
(Cycles)
10-Amp
Peak
Amps
15-Amp
Peak
Amps
25-Amp
Pea k
Amps
45-Amp
Peak
Amps
0.017 1 110 150 250 650
0.050 3 85 140 175 420
0.100 6 70 110 140 320
0.200 12 60 90 112 245
0.50030507080175
1 60405567134
2 120 33 49 53 119
3 180 32 47 49 98
4 240 31 43 47 95
5 300 30 40 45 91
1060028354284
Note: ***60 HZ
Form 859-011127
SOLID-STATE RELAYS
DATA SHEET
page 6/13
Opto22 43044 Business Park Drive Temecula, CA 92590 Phone: (909)695-3000 (800)321-OPTO Fax: (909)695-3095 Internet: www.opto22.com
Inside Sales: (800)452-OPTO Product Support: (800)TEK-OPTO (909)695-3080 Fax: (909)695-3017 E-mail: support@opto22.com FaxBack: (800)474-OPTO
Current vs. Ambient Ratings Surge Current Data
The Z Series employs a unique heat transfer system that makes it possible
for Opto 22 to deliver a low-cost, 10-amp, solid-state relay in an all-plastic case.
The push-on tool-free quick-connect terminals make the Z Series ideal for high-
volume OEM applications.
Dimensional Drawings
AC Power Series - 120/240 Volt
Plastic Package (z series)
Specifications
Model
Number
Nominal
AC L ine
Voltage
Nominal
Current
Rating
(A mp s )
1 cycle
Surge
(Amps )
Peak
Nominal
Signal
Input
Resistance
(Ohms)
Signal
Pick-up
Voltage
Signal
Drop-out
Vo lt age
Peak
Repetitive
Voltage
Maximum
Maximum
Output
Vo lt age
Drop
Off-State
Leakage
(mA)
Maximum
**
Operating
Vo lt ag e
Range
(Volts AC)
I2t
Rating
t=8.3
(ms )
Isolation
Voltage
q
jc*
(°C/Watt)
Dissipation
(Watts/Amp)
Z120D10 120 10 110 1000
3VDC
(32V
allowed)
1 VDC 600 1.6 volts 6 mA 12-140 50 4,000
VRMS
41
Z240D10 240 10 110 1000
3VDC
(32V
allowed)
1 VDC 600 1.6 volts 12 mA 24-280 50 4,000
VRMS
41
Notes: θjc* = Thermal resistance junction to base. Maximum junction temperature is 110°C.
** Operating Frequency: 25 to 65 Hz (operates at 400 Hz with 6 times the offstate leakage)
Time
Second
Time***
(Cycles)
Peak
Amps
0.017 1 110
0.050 3 85
0.100 6 70
0.200 12 60
0.500 30 50
16040
2 120 33
3 180 32
4 240 31
530030
10 600 28
Note: ***60 HZ
Form 859-011127
SOLID-STATE RELAYS
DATA SHEET
page 7/13
Opto22 43044 Business Park Drive Temecula, CA 92590 Phone: (909)695-3000 (800)321-OPTO Fax: (909)695-3095 Internet: www.opto22.com
Inside Sales: (800)452-OPTO Product Support: (800)TEK-OPTO (909)695-3080 Fax: (909)695-3017 E-mail: support@opto22.com FaxBack: (800)474-OPTO
Model
P240D4
Surge Current Data
Dimensional Drawings
AC Power - Printed Circuit Package (P & MP Series)
Specifications
Model
MP240D4
Model
Number
Nominal
AC Lin e
Voltage
Nominal
Curre nt
Rating
Amp s
1 cycle
Surge
(Am ps )
Peak
Nominal
Signal
Input
Resistance
(Ohms)
Signal
Pick-up
Voltage
Signal
Drop-out
Voltage
Peak
Repetitive
Voltage
Maximum
Maximum
Output
Voltage
Drop
Off-State
Leaka ge
mA
Maximum
**
Opera tin g
Voltage
Range
(Volts AC)
I2t
Rating
t=8.3
(ms)
Isolation
Voltage
θjc *
°C/Watt
Dissipation
Wa t ts /A mp
MP120D2
or P120D2 1202201000
3VD C***
(32V
allowed)
1 VDC 600 1.6 volts 5 mA 12-140 2 4,000
VRM S 20 1.2
MP120D4
or P120D4 1204851000
3VD C***
(32V
allowed)
1 VDC 600 1.6 volts 5 mA 12-140 30 4,000
VRM S 6.5 1.2
MP240D2
or P240D2 240 2 20 1000
3VD C***
(32V
allowed)
1 VDC 600 1.6 volts 5 mA 24-280 2 4,000
VRM S 20 1.2
MP240D4
or P240D4 240 4 85 1000
3VD C***
(32V
allowed)
1 VDC 600 1.6 volts 5 mA 24-280 30 4,000
VRM S 6.5 1.2
MP380D4 380 4 85 1000
3VDC
***
(32V
allowed)
1 VDC 800 1.6 volts 5 mA 24-420 30 4,000
VRM S 6.5 1.2
Notes: θjc* = Thermal resistance junction to bas e. Maximum junction temperature is 110°C.
** = Operating Frequency: 25 to 65 Hz (operates at 400 Hz with 6 times the offstate leakage)
*** = MP Series 24 volts maximum.
Time
Second
Time*
(Cycles)
Peak
Amps
Peak
Am ps
0.017 1 20 85
0.050 3 18 66
0.100 6 15 53
0.200 12 11 45
0.500 30 9 37
1608.531
21208 28
31807.527
42407 26
5 300 6.5 25
10 600 6 24
Note: *60 HZ
Form 859-011127
SOLID-STATE RELAYS
DATA SHEET
page 8/13
Opto22 43044 Business Park Drive Temecula, CA 92590 Phone: (909)695-3000 (800)321-OPTO Fax: (909)695-3095 Internet: www.opto22.com
Inside Sales: (800)452-OPTO Product Support: (800)TEK-OPTO (909)695-3080 Fax: (909)695-3017 E-mail: support@opto22.com FaxBack: (800)474-OPTO
Thermal Ratings
Power Series
Specifications
P Series
MP Series
Dimensional Drawings
Dimensional
Drawings
DC Switching Series
Description
DC60P or
DC60MP
DC200P or
DC200MP DC60S-3 DC60S-5
Operating Voltage
Range 5-60 VDC 5-200 VDC 5-60 VDC 5-60 VDC
Forward Voltage
Drop
1.5 volts
at 1 amp
1.5 volts
at 3 amps
1.5 volts
at 5 amps
Nominal Current
Rating 3 amps 1 amp 3 amps 5 amps
Off-State Blocking 60 VDC 250 VDC 60 VDC 60 VDC
Signal Pickup
Voltage
3 VDC
32 Volts*
allowed
3 VDC
32 Volts*
allowed
3 VDC
32 Volts
allowed
3 VDC
32 Volts
allowed
Signal Dropout
Voltage 1 VDC 1 VDC 1 VDC 1 VDC
Signal Input
Impedance 1,000 ohms 1, 000
ohms 1,000 ohms 1,000 ohms
1 Second Surge 5 amps 2 amps 5 amps 10 amps
Operating Temp.
Range
-40° C to
100° C
-40° C to
100° C
-40° C to
100° C
-40° C to
100° C
Isolation Voltage 4,000 VRMS 4,000 VRMS 4,000 VRMS 4,000 VRMS
Off-st at e Leakage 1 mA
maximum
1 mA
maximum
1 mA
maximum
1 mA
maxi mum
Package Type P/MP
series
P/MP
series
Power
series
Pow er
series
Turn-On Time 100
m
sec 100
m
sec 100
m
sec 100
m
sec
Turn-Off Time 750
m
sec 750
m
sec 750
m
sec 750
m
sec
Note: *MP series maximum allowed control signal 24 VDC.
Form 859-011127
SOLID-STATE RELAYS
DATA SHEET
page 9/13
Opto22 43044 Business Park Drive Temecula, CA 92590 Phone: (909)695-3000 (800)321-OPTO Fax: (909)695-3095 Internet: www.opto22.com
Inside Sales: (800)452-OPTO Product Support: (800)TEK-OPTO (909)695-3080 Fax: (909)695-3017 E-mail: support@opto22.com FaxBack: (800)474-OPTO
Heat Sink Calculation
Like all semiconductor devices, SSR current ratings
must be based on maximum junction temperature.
All Opto 22 SSRs operate conservatively at maximum
junction temperatures of 110° C. Determining an
adequate heat sink for a given SSR conducting a
given current is very simple.
Note: Thermally conductive grease must be used
between the relay base and the heat sink.
Sample Calculation Given:
120-Volt, 20-Amp Load
50° C Ambient Air
Choose Model 120D25 SSR.
Calculate dissipation as: 20 amps x 1.3 Watts per amp = 26 Watts
Calculate temperature rise junction to SSR base as: 26 Watts x 1.2° C per Watt = 31.2° C
Calculate allowable temperature of heat sink by subtracting 31.2° C from 110° C allowable junction temperature:
110° C-31.2 = 78.8° C
The heat sink is in a 50°C ambient, therefore, allowable temperature rise on heat sink is: 78.8° C-50° C = 28.8° C
If heat sink is allowed to rise 28.8° C above ambient, then the thermal resistance of the heat sink is simply the 28.8° C rise divided by
the 26 Watt. Any heat sink having a thermal resistance less than 1.1° C per Watt will be adequate.
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.
IRMS = RMS value of load or SSR
T1 = Time current is on
T2 = Time current is off
ION = RMS value of load current during on period
IRMS = (ION)2 x T1
T1 + T2
Tips
Applications
Form 859-011127
SOLID-STATE RELAYS
DATA SHEET
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Opto22 43044 Business Park Drive Temecula, CA 92590 Phone: (909)695-3000 (800)321-OPTO Fax: (909)695-3095 Internet: www.opto22.com
Inside Sales: (800)452-OPTO Product Support: (800)TEK-OPTO (909)695-3080 Fax: (909)695-3017 E-mail: support@opto22.com FaxBack: (800)474-OPTO
Transformer Loads Solenoid Valve and Contactor Loads
Careful consideration should be given to the selection
of the proper SSR for driving a given transformer. Transformers
are driven from positive saturation of the iron core to negative
saturation of the core each ½ cycle of the alternating voltage.
Large inrush currents can occur during the first ½ cycle of line
voltage when a zero voltage SSR happens to turn on during
the positive ½ cycle of voltage when the core is already in
positive saturation. Inrush currents greater than 10 times rated
transformer current can easily occur. The following table
provides a guide for selecting the proper SSR for a given
transformer rating.
All Opto 22 SSRs are designed to drive inductive loads such as solenoid
valves and electromechanical contactors. The built-in snubber in each
SSR assures proper operation into inductive loads. The following table
is a guide in selecting an SSR to drive a solenoid or contactor.
Tips (Continued)
Applications
Control Current Calculation
All Opto 22 DC controlled SSRs have a control circuit consisting of 1000 ohms in
series with an LED. Since 3 volts is required to turn on any SSR, the maximum current
required is (3 volt - 1 volt) divided by 1000 ohms which equals 2.0 mA. The 1 volt is
subtracted from the 3 volt signal because 1 volt is dropped across the LED. For higher
control voltages, an external resistor can be added in series with the control voltage to
limit the control current. To limit the control current to 2 mA, calculate the external resistor
RC = 500 (EC- 3) where EC = the control voltage.
The DC control voltage range is 3–32 VDC. To calculate the control current for any voltage
within the 3–32 VDC range, use the formula:
EC - 1
1000
IC =
where RC = zero.
With a 5V control signal,
IC = = 4 mA.
5 - 1
1000
120-Volt Coils
SSR CURRENT
RATING SOLENOID CONTACTOR
2-Amp 1-Amp NEMA Size 4
4-Amp 3-Amp NEMA Size 7
240-Volt Coils
SSR CURRENT
RATING SOLENOID CONTACTOR
2-Amp 1-Amp NEMA Size 7
4-Amp 3-Amp NEMA Size 7
120-Volt Transformers
SSR MODEL TRANSFORMER
P or MP 120D2 100 VA
Z120D10 500 VA
120D3 100 VA
P or MP 120D4 250 VA
120D10 or 120A10 500 VA
120D25 or 120A25 1 KVA
120D45 2 KVA
240-Volt Transformers
P or MP240D2 200 VA
7240D10 1 KVA
120D3 200 VA
P or MP240D4 500 VA
240D10 or 240A10 1 KVA
240D25 or 240A25 2 KVA
240D45 4 KVA
480-Volt Transformers
SSR MODEL TRANSFORMER
480D10-12 5-Amp Primary
480D15-12 5-Amp Primary
Form 859-011127
SOLID-STATE RELAYS
DATA SHEET
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Opto22 43044 Business Park Drive Temecula, CA 92590 Phone: (909)695-3000 (800)321-OPTO Fax: (909)695-3095 Internet: www.opto22.com
Inside Sales: (800)452-OPTO Product Support: (800)TEK-OPTO (909)695-3080 Fax: (909)695-3017 E-mail: support@opto22.com FaxBack: (800)474-OPTO
Solid-State Relays In Series
In applications requiring greater current rating at higher voltage,
two Opto 22 SSRs may be operated in series for double the
voltage rating. The built-in snubber in each SSR assures proper
voltage sharing of the two SSRs in series. In the diagram below,
two 240-volt, 45-amp SSRs are connected in series for
operation on a 480-volt line. The control is shown with a
parallel hook-up but it should be noted that a serial connection
can also be implemented.
Lamp Loads
Since all Opto 22 SSRs are zero voltage switching,
they are ideal for driving incandescent lamps because
the initial inrush current into a cold filament is
reduced. The life of the lamp is increased when
switched by a zero voltage turn on SSR. The
following table is a guide to selecting an Opto 22
SSR for switching a given incandescent lamp.
Heater Loads
Care should be taken in selecting a SSR for driving a heater load if
the load is cycled on and off in a continuous manner as might occur
in a temperature control application. Constant cycling can cause
thermal fatigue in the thyristor chip at the point where the chip
bonds to the lead frame. Opto 22 employs a thick copper lead frame
for mounting the SCR chips in the power series SSRs to eliminate
thermal fatigue failures. In addition, Opto 22 recommends operating
any SSR at 75% rated current for cycling heater loads to ensure
complete reliability.
The following table is a guide to selecting the proper SSR for a
given heater load.
Tips (Continued)
Applications
120 Volt Lamps
SSR CURRENT RATING LAMP RATING
2-Amp 100 Watt
4-Amp 400 Watt
10-Amp 1 Kilowatt
25-Amp 2 Kilowatt
45-Amp 3 Kilowatt
240 Volt Rating
SSR CURRENT RATING LAMP RATING
2-Amp 200 Watt
4-Amp 800 Watt
10-Amp 2 Kilowatt
25-Amp 4 Kilowatt
45-Amp 6 Kilowatt
Nominal SSR
Current Rating
Maximum
Recommended
Heater Current
2-Amp 1½-Amp
4-Amp 2½-Amp
10-Amp 7½-Amp
25-Amp 18-Amp
45-Amp 35-Amp
10 480V 8-Amp
10 480V 8-Amp
Form 859-011127
SOLID-STATE RELAYS
DATA SHEET
page 12/13
Opto22 43044 Business Park Drive Temecula, CA 92590 Phone: (909)695-3000 (800)321-OPTO Fax: (909)695-3095 Internet: www.opto22.com
Inside Sales: (800)452-OPTO Product Support: (800)TEK-OPTO (909)695-3080 Fax: (909)695-3017 E-mail: support@opto22.com FaxBack: (800)474-OPTO
Single-Phase Reversing Motor Control
Three-Phase Motor Control Three-Phase Reversing Motor Control
Three-phase motors may
be controlled by solid-state
relays as shown. A third
SSR as shown is optional,
but not necessary. The
control windings may be
connected in series or
parallel. Care should be
taken to ensure that surge
current drawn by the motor
does not exceed surge
current rating of the SSR.
Three-phase reversing motor control can be implemented with four
SSRs as shown in the connection diagram. The SSRs work in pairs
with SSR1 and SSR3 operated for rotation in one direction and SSR2
and SSR4 operated for rotation in the reverse direction. The resistor
R1 as shown in the connection diagram protects against line-to-line
shorts if SSR1 and SSR4 or SSR3 and SSR2 are on at the same time
during the reversing transition period. Use the following table as a
guide to the proper selection of an SSR for this application.
The resistors are unnecessary if the
control circuit is designed to ensure
one SSR is off before the other SSR
is on.
1.4 EAC
10 x SSR full load rating
1.4 x 120
10 x 10
© 19962001 Opto 22. All rights reserved. All trademarks, trade names, logos, and service marks referenced herein belong to their respective companies.
Tips (Continued)
Applications
The circuit diagram illustrates a typical 1 Ø motor winding inductance and the phase shift
capacitor can cause twice line voltage to appear across the open SSR. A 240-volt SSR should
be used for a 120-Volt line. During the transition period when one SSR is turned on and the
other SSR is going off, both SSRs may be on. In this case, the capacitor may discharge through
the two SSRs, causing large currents to flow, which may destroy the SSRs. The addition of RL
as shown will protect the SSRs from the short circuit capacitor discharge current.
CALCULATE RL as: RL =
EXAMPLE: 10 amp SSR
120 V AC Line
RL = = 1.7 ohm
240-Volt 3q Motors
SSR MODEL MOTOR
Z240D25 1/3 HP
Z240D10 3/4 HP
240D10 3/4 HP
240A10 3/4 HP
240 D25 2 HP
240A25 2 HP
240 D45 3 HP
480-Volt 3q Motors
SSR MODEL MOTOR
480D10-12 1-½ HP
480D15-12 1-½ HP
Opto 22
Relay
Motor Full
Load Rating
Resistor for
120V line
Resistor for
240V line
3-Amp 1.25-Amp 4 ohm 50 W 8 ohm 50 W
10-Amp 5-Amp 1 ohm 100 W 2 ohm 100 W
25-Amp 8-Amp .5 ohm 100 W 1 ohm 100 W
45-Amp 16-Amp .25 ohm 150 W .5 ohm 150 W
15-Amp 5-Amp 1 ohm 100 W 2 ohm 100 W
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590 • Phone: (909) 695-3000 • (800) 321-OPTO • Fax: (909) 695-3095 • Internet: www.opto22.com
Inside Sales: (800) 452-OPTO • Product Support: (800) TEK-OPTO • (909) 695-3080 • Fax: (909) 695-3017 • E-mail: sales@opto22.com • FaxBack: (800) 474-OPTO.
Products
Opto 22 produces a broad array of reliable, flexible hardware
and software for industrial automation and remote monitoring.
Opto 22’s diverse and complete product range allows you to
buy in at any level, from solid-state relays to fully integrated
control systems.
SNAP Ultimate I/O™
The most intelligent and powerful I/O system available,
SNAP Ultimate I/O effectively combines I/O, control,
networking, and enterprise connectivity
into a single cohesive system.
SNAP Ultimate I/O has the ability
to communicate
directly
with
enterprise systems, eliminating the
need for complex middleware and the significant
investments associated with it. Software and utilities
for use with SNAP Ultimate I/O include ioControl™
flowchart-based control programming software and
ioDisplay™, a Windows-based HMI development package.
SNAP Ethernet I/O™
Using SNAP Ethernet I/O systems, you can connect a wide
variety of electronic and mechanical devices
such as lights, temperature and pressure
sensors, motors, and serial devices to
computers via a standard Ethernet network,
wireless LAN, or even the Internet.
SNAP-IT™ Systems
A packaged solution that brings industry-proven
SNAP Ethernet technology to your enterprise
faster and easier than ever before, SNAP-IT
is a Web-enabled hardware appliance that
connects environmental, device, and
other sensors directly to your enterprise
applications. The connected devices can
then be controlled and real-time operational data can be
collected, monitored, and delivered via a standard Ethernet,
wireless LAN, or dial-up network.
Opto 22 FactoryFloor™ Software
FactoryFloor is an integrated suite of
industrial control software applications
designed to help you develop control
automation solutions, build easy-to-use
operator interfaces, and expand your
manufacturing systems’ connectivity.
© 2001 Opto 22. All rights reserved. All trademarks, trade names, logos, and service marks referenced herein belong to their respective companies. Form #1335-011119
Other Software and Hardware
Software developer kits (SDKs), diagnostic
utilities, support for the Linux operating
system, and a full line of SNAP industrial
controllers are also available from Opto 22.
Quality
In delivering hardware and software solutions for worldwide
device management and control, Opto 22 retains the highest
commitment to quality.
We do no statistical testing; each product is made in the
U.S.A. and is tested twice before leaving our 160,000 square-
foot manufacturing facility in Temecula, California. That’s why
we can guarantee solid-state relays and all optically-isolated
I/O modules
for life
.
Product Support
Opto 22’s Product Support Group offers comprehensive
technical support for Opto 22 products. The staff of support
engineers represents years of training and experience, and
can assist with a variety of project implementation questions.
Product support is available in English and Spanish from
Monday through Friday, 8 a.m. to 5 p.m. Pacific Standard Time.
Opto 22 Web Sites
www.opto22.com
www.ManageTheRealWorld.com
www.internetio.com (live Internet I/O demo)
www.ultimateio.com (SNAP Ultimate I/O information)
Other Resources
• OptoInfo CDs • Ongoing, up-to-date training
• Integration support • FaxBack service: (800) 474-OPTO
About Opto 22
Founded in 1974, Opto 22 is a leading manufacturer of
high-quality hardware and software
solutions for connecting real-world
devices with computer networks.
Customer applications include
enterprise management, remote
monitoring and control, industrial automation, and data
acquisition. Opto 22 was one of the first companies to
recognize and implement solutions involving networks,
computers, and real-world equipment and devices. More
than 65 million devices worldwide are reliably connected
to Opto 22 systems.
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