Crydom Series A48, Series D48 Data Sheet

MODEL NUMBERS

AC CONTROL A4812 A4825 A4850 A4875 A4890
D C CONTROL D4812 D4825 D4850 D4875 D4890

OUTPUT SPECIFICATIONS

➀

Operating Voltage (47-63 Hz) [Vrms] 80-530 80-530 80-530 80-530 80-530
Max. Load Current ➂[Arms] 12 25 50 75 90
Min. Load Current, [mArms] 40 40 40 40 40
Transient Overvoltage [Vpk] 800 800 800 800 800
Max. Surge Current, (16.6ms) [Apk] 140 250 625 1000 1200
Max. On-State Voltage Drop @ Rated Current [Vpk] 1.7 1.7 1.7 1.7 1.7
Thermal Resistance Junction to Case (R

θJC

) [˚C/W] 1.48 1.02 0.63 0.31 0.28

Maximum I2 t for Fusing, (8.3 msec.) [A2sec] 81 260 1620 4150 6000

Max. Off-State Leakage Current @ Rated Voltage [mArms] 10 10 10 10 10
Min. Off-State dv/dt @ Max. Rated Voltage [V/µsec]

➁

500 500 500 500 500

Max. Turn-On Time 1/2 Cycle (DC Input), 10.0 msec (AC Input)
Max. Turn-Off Time 1/2 Cycle (DC Input), 40.0 msec (AC Input)
Power Factor (Min.) with Max. Load 0.5 0.5 0.5 0.5 0.5

INPUT SPECIFICATIONS ➀ DC CONTROL AC CONTROL

(D PREFIX) (A PREFIX)

Control Voltage Range 3-32 Vdc 90-280 Vrms (60Hz)
Max. Reverse Voltage -32 Vdc ---
Max. Turn-On Voltage 3.0 Vdc 90 Vrms
Min. Turn-Off Voltage 1.0 Vdc 10 Vrms
Nominal Input Impedance See Note 60K Ohms
Typical Input Current 2.0 mA 2mA @ 120 Vrms, 4mA @ 240 Vrms

GENERAL NOTES

➀ All parameters at 25˚C unless otherwise specified.
➁ Off-State dv/dt test method per EIA/NARM standard RS-443, paragraph 13.11.1
➂ Heat sinking required, for derating curves see page 2.
➃

➄

Turn-on time for random turn-on versions
is 0.02 msec (DC Control Models).

Input circuitry incorporates active current limiter.

• Zero Voltage and Random
Turn-On Switching

• Panel Mount

• 800V Transient Capability

FastFax Document No.
SERIES A48/D48.
REV. 012601
PAGE 1 OF 3

Featuring state-of-the-art Surface
Mount Technology, these SPST-NO
relays deliver proven reliability in the
most demanding applications.
Output consists of an SCR AC switch
and is available in zero-cross, random
turn-on (phase controllable) and ver­sions with either AC or DC input (coil)
control.
Manufactured in Crydom’s ISO 9001
Certified facility for optimum product
performance and reliability.

Series A48, Series D48

12-90Amp • 480 V ac• AC Output

© 2001 CRYDOM CORP, Specifications subject to change without notice.

• Internal Snubber

➃

➄

➄

For recommended applications and more information contact:
USA: (800) 8 CRYDOM • [phone] •[phone] • fax [phone]
Crydom Corp, 9525 Chesapeake Drive, San Diego, CA 92123 • Email: [e-mail]
WEB SITE: http://www.crydom.com FASTFAX Product Information: [phone]
UK: (44)1202 857300 • fax [phone] Crydom International Ltd., Riverside House
Brook Road, Wimborne, Dorset, England BH21 2BH, Email: [e-mail].
GERMANY: 0180 3000 506 • fax [phone] Crydom GmbH

AVAILABLE OPTIONS

-10 Random Turn-On (AC & DC Control)

Phase Controllable (DC Control)
Example: D4890-10

GENERAL SPECIFICATIONS

Dielectric Strength 50/60Hz Input/Output/Base 4000 Vrms
Insulation Resistance (Min.) @ 500 Vdc 10

9

Ohm

Max. Capacitance Input/Output

8 pF

Ambient Operating Temperature Range

-40 to 80˚C

Ambient Storage Temperature Range -40 to 125˚C

MECHANICAL SPECIFICATIONS

Weight: (typical)

3.0 oz. (86.5g)
Encapsulation: Thermally Conductive Epoxy
Terminals:

Screws and Saddle Clamps Furnished, Unmounted

Crydom Heat Sinks offer excellent
thermal management and are per-

fectly matched to the load current
ratings of Crydom panel mount
relays. Request Crydom’s Heat Sink
specification sheet for all the details.

FastFax Document No.
SERIES A48/D48
REV. 012601
PAGE 2 OF 3

Series A48, Series D48

12-90Amp • 480 V ac• AC Output

© 2001 CRYDOM CORP, Specifications subject to change without notice.

APPROVALS

UL E116949
CSA LR81689
VDE 10143 UG

Screw Torque Requirements:

6-32 Screws - 10 in. lbs.,
8-32 and 10-32 Screws - 20in. lbs.
(Screws dry without grease.)

All dimensions are in inches (millimeters)

F Faston Terminals (Up to 25 Amp Models)

Example: D4850F

Fastons:

Single pair (up to 25A)
Double pair* (up to 50A).
*Caution: User must connect to both pairs

MOUNTING
HOLE/SLOT

0.17 (4.3) DIA.

1.87

(47.5)

BASE PLATE
.125 (3.2)

MOUNTING
HOLE/SLOT

0.17 (4.3) DIA.

1.87

(47.5)

BASE PLATE
.125 (3.2)

1.10

(27.9)

.45

(11.4)

OUTPUT

12

SOLID-STATE RELAY

+--

34

INPUT

1.00

(25.4)

1.80

(45.7)

1.10

(27.9)

.45

(11.4)

OUTPUT

12

SOLID-STATE RELAY

--

4

(45.7)

INPUT

1.00

(25.4)

1.80

+

1.70

(43.2)

1.70

(43.2)

3

2.30

(58.4)

6-32 TERMINAL
(2 PLACES)

2.30

(58.4)

FASTON
TERMINAL
.187 X .032
(2 PLCS.)

8-32 TERMINAL

(2 PLACES )

.78

(19.8)

.90

(22.9)

FASTON TERMINAL
.250 X .032 (2 PLCS.)

.87 REF.

(22.2)

.78

(19.8)

.90

(22.9)

For recommended applications and more information contact:
USA: (800) 8 CRYDOM • [phone] •[phone] • fax [phone]
Crydom Corp, 9525 Chesapeake Drive, San Diego, CA 92123 • Email: [e-mail]

WEB SITE: http://www.crydom.com FASTFAX Product Information: [phone]
UK: (44)1202 857300 • fax [phone] Crydom International Ltd., Riverside House
Brook Road, Wimborne, Dorset, England BH21 2BH, Email: [e-mail].
GERMANY: 0180 3000 506 • fax [phone] Crydom GmbH

12

8

4

0

24 8 126 20406080

Load Current [Arms] Max Ambient Temp. [˚C]

Power Dissipation

110

115

120

Base Plate Temp [˚C]

12A

9˚C/W

5˚C/W

3˚C/W

7˚C/W

NO HEATSINK

30

20

10

25

15

5
0

510 202515 20 40 60 80

Load Current [Arms] Max Ambient Temp. [˚C]

Power Dissipation

95

120

Base Plate Temp [˚C]

25A

1˚C/W

100

110

3˚C/W

NO HEATSINK

60

40

20

0

10 20 40 5030 20 40 60 80

Load Current [Arms] Max Ambient Temp. [˚C]

Power Dissipation

90

Base Plate Temp [˚C]

50A

2˚C/W

1˚C/W

.5˚C/W

100

110

120

1.5˚C/W

NO HEATSINK

120

80

40

0

15 30 60 7545 20 40 60 80

Load Current [Arms] Max Ambient Temp. [˚C]

Power Dissipation

100

110

120

Base Plate Temp [˚C]

75A

.5˚C/W

95

1˚C/W

120

80

40

0

20 40 80 060 20 40 60 80

Load Current [Arms] Max Ambient Temp. [˚C]

Power Dissipation

100

110

120

Base Plate Temp [˚C]

90A

1ºC/W

.4˚C/W

.2˚C/W

90

.5˚C/W

2˚C/W

.3˚C/W

2

6

10

14

0

10

CURRENT DERATING CURVES

FastFax Document No.
SERIES A48/D48.
REV. 012601
PAGE 3 OF 3

Series A48, Series D48

12-90Amp • 480 V ac• AC Output

© 2001 CRYDOM CORP, Specifications subject to change without notice.

For recommended applications and more information contact:
USA: (800) 8 CRYDOM • [phone] •[phone] • fax [phone]
Crydom Corp, 9525 Chesapeake Drive, San Diego, CA 92123 • Email: [e-mail]

WEB SITE: http://www.crydom.com FASTFAX Product Information: [phone]
UK: (44)1202 857300 • fax [phone] Crydom International Ltd., Riverside House
Brook Road, Wimborne, Dorset, England BH21 2BH, Email: [e-mail].
GERMANY: 0180 3000 506 • fax [phone] Crydom GmbH