© 2002 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com SD 1
SD\052002\Q1
Dual Output to 50A 600 Vac
DC Control
FEATURES/BENEFITS
•Designed for all types of loads
•Dual output (two relays in one package)
•Faston terminals
•Connector for common or individual control
•Tight zero-cross window for low EMI
•High immunity to surges
DESCRIPTION
The Series SD dual-phase relays are designed for all
types of loads. The design incorporates two relays in a
single package. The relays utilize optical isolation to
protect the control from load transients. High-current
models are excellent for motor and phase angle control.
The 50A 600Vac models are available with common
control connector or individual control connector.
APPLICATIONS
•Motor control
•Heating control
•Uninterruptible power supplies
•Light dimmers
•Industrial and process control
• On/Off controls of AC equipment
APPROVALS
All models are UL recognized.
UL File Number: E128555.
Part Number Description
SD24R50-06 12-280 V ac
SD24R50 12-280 V ac
SD24D50-06 12-280 V ac
SD48D40-06 24-500 V ac
SD48D50A 24-600 V ac
SD48D50A2 24-600 V ac
Part Number Explanation
Series SD
NOTES
1) Line V oltage (nominal): 24 = 240 Vac; 48 = 480 Vac
2) Switch Type: R = Random turn-on; D = Zero cross turn-on;
A = AC control, Zero cross turn-on
3) Options: -06 = Faston terminals
A = Common control adapter
A2 = Individual control adapter
SD R50
48 -06
SeriesLine Voltage1Output Current - Amps
Switch Type2Options3
INPUT (CONTROL) SPECIFICATION
Min Max Units
Control Range
SD24 4 30 Vdc
SD48D40-06 5 30 Vdc
SD48D50XX 10 30 Vdc
Input Current Range
All relays (See Fig.3) 3 mA
Must Turn-Off Voltage
All relays 1 Vdc
Input Resistance (T ypical)
SD24R50-06 1000 Ohms
SD48D40-06 1000 Ohms
SD48D50A 1400 Ohms
SD48D50A2 1800 Ohms
Reverse V oltage Protection
All relays 30 V
+
–
–
+
outputinput
input output
L1
T1
L2
T2
1
2
+
+
output
i
nput
i
nput
output
L1
T1
L2
T2
1
2
–
–
BLOCK DIAGRAM
Figure 1b — SD48D40-06
Figure 1a — All SD relays except SD48D40-06
SD 2 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2002 TELEDYNE RELAYS
SD\052002\Q1
MECHANICAL SPECIFICATION
Figure 2a — SD24R50-06 and SD24D50-06;
dimensions in inches (mm)
.21
(5.2) 1.87 (47.6)
2.28 (58)
0.9 (29.2)
1.75 (44.5)
Ø .19 (4.7)
1.4 (35.8)
.18
(4.57)
0.3 (7.62)
.44
(11.1)
.77 (19.6)
1.26 (32)
.39
(10)
.25x.03
(6.3x0.8)
WEIGHT: 3.88 oz. (110g)
.21
(5.2) 1.87 (47.6)
2.28 (58)
1.67 (42.5)
.32
(8) .3 (7.62)
.31
(7.75)
.88 (22.4)
.77 (19.6)
1.06 (27) 1.1 (28)
1.75 (44.5)
.39
(10)
Ø .19 (4.7) M 4
WEIGHT: 3.88 oz. (110g)
.88 (22.4)
.77 (19.6)
1.06 (27) .88 (22.4)
.77 (19.6)
1.06 (27)
.63 (16) max .63 (16) max
.4 (10.2)
.4 (10.2)
50A
400Vac
(24-600Vac)
400Vac
(24-600Vac)
T2
L2
Input
10-30
Vdc
+
50A
T1
L1
.2 (5.2) 1.87 (47.6)
2.28 (58)
1.1 (28)
1.75 (44.5)
Ø.19 (4.7) M4
1.67 (42.5)
==
.31 (7.75)
—
WEIGHT: 3.88 oz. (110g)
TOLERANCES:
1.26 (32)
.77 (19.6)
1.2 (30)
.024x.024
(0.6x0.6)
1~ 2~
4- 3+
1.1 (28)
Ø .19 (4.7)
1.87 (47.6)
.20 (5.1)
1.0 (25.4)
1.75 (44.5)
2.28 (58)
±
.012
.25 (6.3)
.35
(8.8)
.5 (12.7)
.83 (21)
WEIGHT: 3.88 oz. (110g)
.88 (22.4)
.77 (19.6)
1.06 (27) .88 (22.4)
.77 (19.6)
1.06 (27)
.63 (16) max .63 (16) max
.8 (20.4)
.8 (20.4)
WEIGHT: 3.88 oz. (110g)
.2 (5.2) 1.87 (47.6)
2.28 (58)
1.1 (28)
1.75 (44.5)
Ø.19 (4.7) M4
1.67 (42.5)
.31 (7.75)
==
400Vac
50A
(24-600Vac)
T2
L2
T1
L1
50A
400Vac
+
+
II
1
2
(24-600Vac)
Inp
u
t 1
0
-
30
V
dc
Figure 2b — SD24R50; dimensions in inches (mm)
Figure 2d — SD48D50A; dimensions in inches (mm)
Figure 2c — SD48D40-06; dimensions in inches (mm)
Figure 2e — SD48D50A2; dimensions in inches (mm)
Series SD
Figure 3 — SD48D50A
TYPICAL APPLICATION
3 phases
200 up to 480VAC
L
1
L
2
L
3
Y wiring
∆ wiring
single
phase
© 2002 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com SD 3
SD\052002\Q1
Series SD
CONTROL CHARACTERISTICS
Figure 4a — SD24 and SD48D40-06 relays
Figure 4b — SD48D50A relay
Figure 4c — SD48D50A2 relay
Control Voltage (V)
Input Currrent (mA)
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
024681012 14 16 18 20 22 24 26 28 300
Control Voltage (V)
Input Current (mA)
2
4
6
8
10
12
14
16
18
20
051015202530350
Control Voltage (V)
Input Current (mA)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
051015202530350
For each input
OUTPUT (LOAD) SPECIFICATION
Input T ype Min Max Units
Operating Range
SD24 R/D 12 280 Vrms
SD48D40-06 24 510 Vrms
SD48D50XX 24 600 Vrms
Peak V oltage
SD24 600 Vpeak
SD48 1200 Vpeak
Load Current Range (Resistive)
SD48D40-06 .005 40 Arms
All other relays .005 50 Arms
Maximum Surge Current Rating (Non-Repetitive)
SD48D40-06 350 A
All other relays 550 A
On-State V oltage Drop
All relays output current 1.6 V
Zero Cross Window
SD R NA
SD D/A ±12 Vac
Off-State Leakage Current (60Hz)
SD48D40-06 2.5 mA
All other relays 1 mA
Turn-On T ime (60 Hz)
SD24 R 0.1 ms
All other relays 8.3 ms
Turn-Off Time (60 Hz)
All relays 8.3 ms
Off-State dv/dt
All relays 500 V/µs
Maximum di/dt (Non-Repetitive)
All relays 50 A /µs
Operating Frequency Range
All relays 10 440 Hz
OUTPUT (LOAD) SPECIFICATION (Continued)
Input T ype Min Max Units
I2t for Match Fusing (<8.3ms)
SD48D40-06 612 A2S
All other relays 1500 A2S
SD 4 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2002 TELEDYNE RELAYS
SD\052002\Q1
SURGE CURRENT
Figure 5a — SD24 50A output current
Figure 5b — SD48 40A output current
Figure 5c — SD48 50A output current
ENVIRONMENTAL SPECIFICATION
Min Max Units
Operating Temperature –40 100 °C
Storage Temperature –40 100 °C
Input-Output Isolation
SD48D40-06 4000 Vrms
All other relays 3300 Vrms
Output-Case Isolation
SD48D40-06 2500 Vrms
All other relays 3300 Vrms
Output to Output
SD48D50XX 3300 Vrms
All other relays 2500 Vrms
Junction Case Thermal Resistance
SD48D40-06 1.1 °C/W
All other relays 0.5 °C/W
Series SD
1100.10.01
0
200
400
600
A
peak
Non-repetitive
t (s)
Repetitive with initial Tj = 70°C
100
200
300
400
Apeak
Non-repetitive
1100.10.01
0
t (s)
Repetitive with initial Tj = 70°C
1010.10.01
0
200
400
600
t (s)
Apeak
Non-repetitive
Repetitive with initial Tj = 70°C
THERMAL CHARACTERISTICS
Figure 6a — SD24 relays output current
Figure 6b — SD48D40-06 output current
Figure 6c— SD48D50A and SD48D50A2 output current
010 20 30 40 50 60 70 80 90 100 110
90°C
Without heat sink
1.2°C/W
0.9°C/W
0.4°C/W
0.2°C/W
0.55°C/W
0°C/W
0.75°C/W
1.35°C/W
1.6°C/W
2°C/W
4°C/W
2.6°C/W
110
10
20
30
40
50
60
70
80
90
100
051015 20 25 30 4035 45
0
Power Dissipation (W)
2 pole
1 pole
120
130
140
150
Max Case Temperature (°C)
Load Current (Arms) Ambient Temperature (°C)
Power Dissipation (W)
Ambient Temperature (°C)Load Current (Arms) 125
0
5
0 5 10 15 20 25 30 35 40
10
15
20
25
30
35
40
45
50
55
60
0102030405060708090100110120
1.2°C/W
1.6°C/W
2°C/W
Without heat sink
0°C/W
0.2°C/W
0.55°C/W
0.75°C/W
0.9°C/W
2.3°C/W
2.6°C/W
4°C/W
1.35°C/W
1°C/W
0.3°C/W
1 pole
2 pole
0
20
40
60
80
100
120
140
160
05101520 25 30 35 40 45 50 0 10 20 30 40 50 60 70 80 90 100
Load Current (Arms) Ambient Temperature (°C)
Power Dissipation (W)
6°C/W
2.2°C/W
1.6°C/W
0.95°C/W
0.75°C/W
0.3°C/W
2 pole
1 pole
NOTES:
1. Electrical specifications at 25°C unless otherwise specified.
2. For 800Hz applications, contact factory.
3. For additional/custom applications, contact factory.
