Catalog 1308242
Issued 3-03 (PDF Rev. 2-14)
Potter & Brumfield
SSR
series
“Hockey Puck”
Solid State Relay With
Paired SCR Output
File E81606
Users should thoroughly review the technical data before selecting a product part
number. It is recommended that users also seek out the pertinent approvals files
of the agencies/laboratories and review them to ensure the product meets the
requirements for a given application.
Features
• Standard “hockey puck” package.
• Enhanced noise immunity (designed to meet level 3 requirements of
European EMC Directive).
• LED indicator.
• Inverse parallel SCR output.
• 25, 50, & 125A rms versions.
• 120/240VAC & 480VAC output types.
• Zero voltage and random voltage turn-on versions.
• AC & DC input versions.
• 4,000V rms optical isolation.
• Floating terminal design.
Engineering Data
Form:
1 Form A (SPST-NO).
Duty:
Continuous.
Isolation:
4,000V rms minimum.
Capacitance:
8 pf typical (input to output).
Temperature Range:
Storage:
–40°C to +100°C
Operating:
–20°C to +80°C.
NOTE: Operation to –40°C is permitted for DC input types at an
increased minimum input voltage of 4VDC (240V line
voltage models) or 5VDC (480V line voltage models).
Case Material:
Plastic, UL rated 94V-0.
Case and Mounting:
Refer to outline dimension.
Termination:
Refer to outline dimension.
Approximate Weight:
3.5 oz. (98g).
Ordering Information
Sample Part Number
1. Basic Series:
SSR = "hockey puck" inverse parallel SCR output solid state relay
2. Line Voltage:
240 = 24 - 240VAC
3. Input Type & Voltage:
480 = 48 - 660VAC
SSR -240
D
25
A = 90 - 280VAC
D = 3 - 32VDC (240V line voltage model) / 4 - 32VDC (480V line voltage model)
4. Maximum Switching Rating/Output:
25 = .1 - 25A rms, mounted to heatsink
50 = .1 - 50A rms, mounted to heatsink
125 = .1 - 125A rms, mounted to heatsink
5. Options:
Leave Blank = Zero voltage turn-on
R = Random voltage turn-on (phase controllable)
Our authorized distributors are more likely to maintain the following items in stock for immediate delivery.
SSR-240A25
SSR-240A50
SSR-240D25
SSR-240D25R
SSR-240D50
SSR-480D125
Input Specifications
AC Input
Parameter
Zero V Turn-on Units
90 - 280VAC
90VAC
10VAC
15mA
DC Input
Zero and Random V Turn-on Units
240VAC Rated Models
Control Voltage Range V
IN
Must Operate Voltage V
IN(OP)
(Min.)
Must Release Voltage V
IN(REL)
(Min.)
Input Current (Max.)
3 - 32VDC
3VDC
1VDC
15mA
480VAC Rated Models
4 - 32VDC
4VDC
1VDC
15mA
1104
reference purposes only.
Dimensions are shown for
Dimensions are in inches over
(millimeters) unless otherwise
specified.
Specifications and availability
subject to change.
www.te.com
http://relays.te.com
Catalog 1308242
Issued 3-03 (PDF Rev. 2-14)
Potter & Brumfield
Output Specifications (@ 25° C, unless otherwise specified)
Parameter
Load Voltage Range V
L
Repetitive Blocking Voltage (Min.)
Load Current Range I
L
*
Single Cycle Surge Current (Min.)
Leakage Current (Off-State) (Max.)
On-State Voltage Drop (Max.)
Static dv/dt (Off-State) (Min.)
Thermal Resistance, Junction to Case
(R
θ
J-C
) (Max.)
Turn-On Time (Max.)
Turn-Off Time (Max.)
I T Rating
Load Power Factor Rating
*See Derating Curves
2
Nom. Line Voltage
120/240V Model
480V Model
120/240 Model
480V Model
120/240 & 480V Models
120/240 & 480V Models
120/240V Model
480V Model
120/240 & 480V Models
120/240 & 480V Models
120/240 & 480V Models
120/240 & 480V Models
120/240 & 480V Models
120/240 & 480V Models
120/240 & 480V Models
Conditions
Units
V rms
V rms
V peak
V peak
A rms
A peak
mA rms
25A Models
50A Models
24 - 280
48 - 660
600
1200
.1 - 50
750
.1
.25
1.35
125A Models
Resistive
f = 60 Hz. V
L
= 240V rms
f = 60 Hz. V
L
= 480V rms
I
L
= Max.
.05 - 25
250
.1 - 125
1,700
V/s
C/W
f = 60 Hz.
f = 60 Hz.
t = 8.3 ms
I
L
= Max.
ms
ms
A Sec.
2
500
0.4
0.25
.15
8.3 for Zero Voltage Turn-On DC input types,
20 for Zero Voltage Turn-On AC input types,
0.02 for Random Voltage Turn-On Models
8.3 for DC input types, 30 for AC input types
937
2,458
0.5 - 1.0
12,000
Electrical Characteristics (Thermal Derating Curves)
25A Units
50A Units
125A Units
Heatsink Recommendations
• We recommend that solid state relay modules be mounted to a
heatsink sufficient to maintain the module’s base temperature at less
than 85°C under worst case ambient temperature and load conditions.
• The heatsink mounting surface should be a smooth (30-40 micro-inch
finish), flat (30-40 micro-inch flatness across mating area), un-painted
surface which is clean and free of oxidation.
• An even coating of thermal compound (Dow Corning DC340 or
equivalent) should be applied to both the heatsink and module mounting
surfaces and spread to a uniform depth of .002” to eliminate all air
pockets.
• The module should be mounted to the heatsink using two #10 screws.
Operating Diagrams
-4
CONSTANT
CURRENT
DC INPUT
+3
4
AC INPUT
Outline Dimensions
1
ZERO
VOLTAGE
CIRCUIT
†
1.850
(47.0)
OUTPUT
1.700
(43.18)
LED INDICATOR
.870
(22.1)
EQUIVALENT CIRCUIT ONLY
2
1
OUTPUT
1.100
.470 (27.94)
(11.9)
1.750
(44.45)
.875
(22.23)
ZERO
VOLTAGE
CIRCUIT
†
EQUIVALENT CIRCUIT ONLY
†
1.000
(25.4)
3
2
.250
(6.35)
Random Turn-on Units have a Random Turn-on circuit
instead of Zero Voltage Circuit
2.250
(57.15)
.785
(19.94)
Dimensions are shown for
reference purposes only.
Dimensions are in inches over
(millimeters) unless otherwise
specified.
Specifications and availability
subject to change.
www.te.com
http://relays.te.com
1105
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