Datasheet HD4850 Specification

MODEL NUMBERS

AC CONTROL HA4812 HA4825 HA4850 HA4875 HA4890
D C CONTROL HD4812 HD4825 HD4850 HD4875 HD4890

OUTPUT SPECIFICATIONS

➀

Operating Voltage (47-63 Hz) [Vrms] 48-530 48-530 48-530 48-530 48-530
Max. Load Current ➂ [Arms] 12 25 50 75 90
Min. Load Current, [mArms] 40 40 40 40 40
Transient Overvoltage [Vpk] 1200 1200 1200 1200 1200
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 Time➄ 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 AC CONTROL

(D PREFIX) (A PREFIX)➃ (E SUFFIX)

Control Voltage Range 3-32 Vdc 90-280 Vrms (60Hz) 18-36 Vrms
Max. Reverse Voltage -32 Vdc --- ---
Max. Turn-On Voltage 3.0 Vdc 90 Vrms 18 Vrms
Min. Turn-Off Voltage 1.0 Vdc 10 Vrms 4.0 Vrms
Nominal Input Impedance See Note➅ 60K Ohms 9.0K Ohms
Typical Input Current 2.0 mA➅ 2mA @ 120 Vrms, 4mA @ 240 Vrms 3mA @ 24 Vrms

GENERAL NOTES

➀All parameters at 25ºC 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 24 Vac Input option, E suffix.
➄ Turn-on time for random turn-on versions

is 0.02 msec (DC Control Models).

➅ Input circuitry incorporates active current limiter.

• Zero Voltage and Random
Turn-On Switching

• Panel Mount

• 1200V Blocking Capability

FastFax Document No. 158
SERIES HA/HD.032698, 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 9002
Certified facility for optimum product
performance and reliability.

Series HA, Series HD

12-90Amp • 480 Vac• AC Output

©1998 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 • e-mail: [e-mail]

WEB SITE: http://www.crydom.com FASTFAX Product Information: [phone]
UK: (44)1202 812300 • fax [phone] Crydom International Ltd., 85, Condor Close,

Woolsbridge Industrial Estate, Three-Legged Cross. Wimborne, Dorset, England BH21 6SU
GERMANY: (49) (0)6874 182580 • fax [phone] Crydom GmbH,
Gewerbegebiet Im Schachen, D-66687 Nunkirchen, Germany • e-mail: [e-mail]

AVAILABLE OPTIONS

E 24 VAC Input (18-36 Vac)

Example: HA4825E

-10 Random Turn-On (AC & DC Control)
Phase Controllable (DC Control)
Example: HD4890-10

F Faston Terminals (Up to 50 Amp Models)

GENERAL SPECIFICATIONS

Dielectric Strength 50/60Hz Input/Output/Base 4000 Vrms
Insulation Resistance (Min.) @ 500 Vdc 109Ohm
Max. Capacitance Input/Output 8 pF
Ambient Operating Temperature Range -40 to 80ºC
Ambient Storage Temperature Range -40 to 125ºC

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 per­fectly 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. 158
SERIES HA/HD.032698, PAGE 2 OF 3

Series HA, Series HD

12-90Amp • 480 Vac• AC Output

©1998 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.)

Fastons:

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

1.87

(47.5)

.78

(19.8)

2.30

(58.4)

1.70

(43.2)

.90

(22.9)

.45

(11.4)

1.10

(27.9)

8-32 TERMINAL

(2 PLACES )

1.00

(25.4)

6-32 TERMINAL
(2 PLACES)

1.80

(45.7)

SOLID-STATE RELAY

12

OUTPUT

34

+--

INPUT

MOUNTING
HOLE/SLOT

0.17 (4.3) DIA.

BASE PLATE
.125 (3.2)

.90

(22.9)

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

BASE PLATE
.125 (3.2)

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

1.87

(47.5)

.78

(19.8)

2.30

(58.4)

1.70

(43.2)

.87 REF.

(22.2)

12

OUTPUT

43

INPUT

1.00

(25.4)

1.80

(45.7)

.45

(11.4)

1.10

(27.9)

MOUNTING
HOLE/SLOT

0.17 (4.3) DIA.

All dimensions are in inches (millimeters)

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

WEB SITE: http://www.crydom.com FASTFAX Product Information: [phone]
UK: (44)1202 812300 • fax [phone] Crydom International Ltd., 85, Condor Close,

Woolsbridge Industrial Estate, Three-Legged Cross. Wimborne, Dorset, England BH21 6SU
GERMANY: (49) (0)6874 182580 • fax [phone] Crydom GmbH,
Gewerbegebiet Im Schachen, D-66687 Nunkirchen, Germany • e-mail: [e-mail]

12

8

4

0

2 4 8 126 20 40 60 80

Load Current [Arms] Max Ambient Temp. [ºC]

Power Dissipation

110

115

120

Base Plate Temp [ºC]

12A

9ºC/W

5ºC/W

3ºC/W

7ºC/W

NO HEATSINK

30

20

10

25

15

5
0

5 10 20 2515 20 40 60 80

Load Current [Arms] Max Ambient Temp. [ºC]

Power Dissipation

95

120

Base Plate Temp [ºC]

25A

1ºC/W

100

110

3ºC/W

NO HEATSINK

60

40

20

0

10 20 40 5030 20 40 60 80

Load Current [Arms] Max Ambient Temp. [ºC]

Power Dissipation

90

Base Plate Temp [ºC]

50A

2ºC/W

1ºC/W

.5ºC/W

100

110

120

1.5ºC/W

NO HEATSINK

120

80

40

0

15 30 60 7545 20 40 60 80

Load Current [Arms] Max Ambient Temp. [ºC]

Power Dissipation

100

110

120

Base Plate Temp [ºC]

75A

.5ºC/W

95

1ºC/W

120

80

40

0

20 40 80 060 20 40 60 80

Load Current [Arms] Max Ambient Temp. [ºC]

Power Dissipation

100

110

120

Base Plate Temp [ºC]

90A

1ºC/W

.4ºC/W

.2ºC/W

90

.5ºC/W

2ºC/W

.3ºC/W

2

6

10

14

0

10

CURRENT DERATING CURVES

FastFax Document No. 158
SERIES HA/HD.032698, PAGE 3 OF 3

Series HA, Series HD

12-90Amp • 480 Vac• AC Output

©1998 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 • e-mail: [e-mail]

WEB SITE: http://www.crydom.com FASTFAX Product Information: [phone]
UK: (44)1202 812300 • fax [phone] Crydom International Ltd., 85, Condor Close,

Woolsbridge Industrial Estate, Three-Legged Cross. Wimborne, Dorset, England BH21 6SU
GERMANY: (49) (0)6874 182580 • fax [phone] Crydom GmbH,
Gewerbegebiet Im Schachen, D-66687 Nunkirchen, Germany • e-mail: [e-mail]