CARLO GAVAZZI RA 4850-D12 D12

Specifications are subject to change without notice (28.02.2007) 1

• High-current, high-voltage

• AC Solid State Relay

• Zero switching

• Rated operational current: 50, 90 and 110 AACrms

• Blocking voltage: U

p

to 1600 V

p

• Rated operational voltage: Up to 600 VACrms

• High surge current capability

• Isolation: OPTO (input-output) 4000 VACrms

Product Description

These high-current, high-volt­age solid state relays are
designed for ON-OFF or phase
controlling of high-power AC
applications. High current and
high dV/dt capabilities will al­low switching of inductive loads
e.g. transformers, motors, val-

Solid State Relay
Switching mode
Rated operational voltage
Rated operational current
Control voltage
Blocking voltage

Ordering Key

Solid State Relays

Type Selection

Switching mode Rated operational Rated operational Control voltage Blocking voltage

voltage current

A: Zero switching 24: 230 VACrms 50: 50 AACrms -D: 4.5 to 32 VDC 06: 650 V

p

Optional: 40: 400 VACrms 90: 90 AACrms 10: 1000 V

p

B. Instant-on switching 48: 480 VACrms 110: 110 AACrms 12: 1200 V

p

60: 600 VACrms 16: 1600 V

p

RA 24 .. -D 06 RA 40 .. -D 10 RA 48 .. -D 12 RA 60 .. -D 16

Operational voltage range 24 to 280 VACrms 24 to 440 VACrms 24 to 530 VACrms 24 to 690 VACrms

Blocking voltage ≥ 650 V

p

≥ 1000 V

p

≥ 1200 V

p

≥ 1600 V

p

Zero voltage turn-on ≤ 15 V ≤ 15 V ≤ 15 V ≤ 20 V

Operational frequency range 45 to 65 Hz 45 to 65 Hz 45 to 65 Hz 45 to 65 Hz

Power factor ≥ 0.5 @ 400 VACrms ≥ 0.5 @ 400 VACrms ≥ 0.5 @ 480 VACrms ≥ 0.5 @ 690 VACrms

Approvals CSA, UL CSA, UL CSA, UL CSA (max 600 VAC),

UL

CE-marking Yes Yes Yes Yes

Selection Guide

Rated operational Blocking voltage Control voltage Rated operational current
voltage 50 AACrms 90 AACrms 110 AACrms

230 VACrms 650 V

p

4.5 to 32 VDC * * RA 24110-D 06

400 VACrms 1000 V

p

4.5 to 32 VDC * RA 4090 -D 10 RA 40110-D 10

480 VACrms 1200 V

p

4.5 to 32 VDC * * RA 48110-D 12

600 VACrms 1600 V

p

4.5 to 32 VDC RA 6050 -D 16 RA 6090 -D 16 RA 60110-D 16

* Please refer to standard range, RA-relays.

General Specifications

Industrial, 1-Phase ZS, High Volt./Current Range
Types RA 60 50 -D 16, RA .. 90 -D .., RA .. 110 -D..

ves and solenoids as well as
all resistive loads. A zero
crossing drive circuit will mini­mize the negative effects of
different load types. Optocou­plers provide an ideal inter­face to logic level DC-outputs.

RA 60 110 -D 16

2 Specifications are subject to change without notice (28.02.2007)

RA 60 50 -D 16, RA .. 90 -D .., RA .. 110 -D..

Input Specifications

Control voltage range 4.5 to 32 VDC

Pick-up voltage ≤ 4.5 VDC
Drop-out voltage ≥ 1 VDC

Input current

@ max. input voltage ≤ 40 mA
Reverse voltage ≤ 32 VDC
Response time pick-up ≤ 1/2 cycle
Response time drop-out ≤ 1/2 cycle

Wiring Diagram

Functional Diagram

Control
input

Output Specifications

RA 60 50 -D 16 RA .. 90 -D .. RA .. 110 -D ..

Rated operational current AC 51 50 Arms 90 Arms 110 Arms

AC 53a 15 Arms 20 Arms 30 Arms

Minimum operational current 250 mArms 400 mArms 500 mArms

Rep. overload current t=1 s ≤ 125 Arms ≤ 150 Arms ≤ 200 Arms

Non-rep. surge current t=10 ms 600 A

p

1150 A

p

≤1900 A

p

Off-state leakage current

@ rated voltage and frequency ≤ 2 mArms ≤ 2 mArms ≤ 5 mArms

I

2

t for fusing t=10 ms ≤ 1800 A2s ≤ 6600 A2s ≤ 18000 A

2

s

On-state voltage drop

@ rated current ≤ 1.6 Vrms ≤ 1.6 Vrms ≤ 1.6 Vrms
Critical dV/dt commutating ≥ 500 V/µs ≥ 500 V/µs ≥ 500 V/µs
Critical dV/dt off-state ≥ 500 V/µs ≥ 500 V/µs ≥ 500 V/µs

Insulation

Rated isolation voltage

Input to output ≥ 4000 VACrms

Rated isolation voltage

Output to case ≥ 4000 VACrms

Insulation resistance

Input to output ≥ 1010Ω

Insulation resistance

Output to case ≥ 1010Ω

Insulation capacitance

Input to output ≤ 16 pF

Insulation capacitance

Output to case ≤ 100 pF

Mains input/load output

Load output/mains input

Control
input

Line/load

IC

RA 60 50 -D 16 RA .. 90 -D .. RA .. 110 -D ..

Operating temperature

-20° to +70°C (-4° to +158°F) -20° to +70°C (-4° to +158°F) -20° to +70°C (-4° to +158°F)

Storage temperature

-40° to +100°C (-40° to +212°F) -40° to +100°C (-40° to +212°F) -40° to +100°C (-40° to +212°F)

Junction temperature ≤ 125°C (257°F) ≤ 125°C (257°F) ≤ 125°C (257°F)

R

th

junction to case ≤ 0.65 K/W ≤ 0.35 K/W ≤ 0.3 K/W

R

th

junction to ambient ≤ 12 K/W ≤ 12 K/W ≤ 12 K/W

Thermal Specifications

Specifications are subject to change without notice (28.02.2007) 3

RA 60 50 -D 16, RA .. 90 -D .., RA .. 110 -D..

Heatsink Dimensions (load current versus ambient temperature)

RA 60 50 -D 16

T

A

Ambient temp. [°C]

50

45

40

35

30

25

20

15

10

5

Power
dissipation [W]

Thermal resistance
[K/W]

Load
current [A]

0.92 0.76 0.60 0.45 0.29 - 63

1.2 0.99 0.80 0.62 0.44 0.26 55

1.5 1.3 1.1 0.85 0.63 0.42 47

1.9 1.6 1.4 1.1 0.89 0.63 40

2.4 2.1 1.8 1.5 1.2 0.91 33

3 2.7 2.3 1.9 1.5 1.1 26

3.9 3.5 3 2.5 2 1.5 20

5.5 4.8 4.1 3.4 2.7 2.1 15

8.6 7.5 6.4 5.4 4.3 3.2 9

17.9 15.6 13.4 11.2 8.9 6.7 4

20 30 40 50 60 70

RA .. 90 .. -D ..

T

A

Ambient temp. [°C]

0.63 0.53 0.42 0.32 - - 97

0.81 0.69 0.57 0.45 0.33 - 84

1 0.89 0.75 0.61 0.47 0.33 71

1.3 1.2 1 0.83 0.66 0.49 59

1.7 1.5 1.3 1.1 0.85 0.64 47

2.2 1.9 1.7 1.4 1.1 0.83 36

3.1 2.7 2.3 1.9 1.5 1.2 26

4.8 4.2 3.6 3 2.4 1.8 17

10 8.8 7.5 6.3 5 3.8 8

20 30 40 50 60 70

90

80

70

60

50

40

30

20

10

Thermal resistance
[K/W]

Load
current [A]

Power
dissipation [W]

Applications

Heat flow

Heatsink
temperature

R

th

j-c

R

th

c-s

Rths-a

Junction
temperature

Case
temperature

Ambient
temperature

This relay is designed for use
in applications in which it is
exposed to high surge condi­tions. Care must be taken to
ensure proper heatsinking
when the relay is to be used at
high sustained currents. Ade­quate electrical connection
between relay terminals and
cable must be ensured.

Thermal characteristics

The thermal design of Solid
State Relays is very important.

Compare the value found in the load current versus tempera­ture chart with the standard heatsink values and select the
heatsink with the next lower value.

Carlo Gavazzi Heatsink

(see Accessories)

No heatsink required
RHS 100 Assy
RHS 301 Assy
RHS 301 F Assy
Consult your distributor

Heatsink Selection

Thermal resistance

R

th s-a

> 12.5 K/W

3.0 K/W

0.8 K/W

0.25 K/W

< 0.25 K/W

Rthc-s = case to heatsink
R

th

s-a = heatsink to ambient

Thermal resistance:
R

th

j-c = junction to case

RA.. 110-D ..

It is essential that the user
makes sure that cooling is ad­equate and that the maximum
junction temperature of the
relay is not exceeded.

If the heatsink is placed in a
small closed room, control panel
or the like, the power dissipation
can cause the ambient tem­perature to rise. The heatsink
is to be calculated on the basis
of the ambient temperature and
the increase in temperature.

0.43 0.35 0.27 - - - 126

0.63 0.53 0.42 0.32 - - 97

0.81 0.69 0.57 0.45 0.33 - 84

1 0.89 0.75 0.61 0.47 0.33 71

1.3 1.2 1 0.83 0.66 0.49 59

1.7 1.5 1.3 1.1 0.85 0.64 47

2.2 1.9 1.7 1.4 1.1 0.83 36

3.1 2.7 2.3 1.9 1.5 1.2 26

4.8 4.2 3.6 3 2.4 1.8 17

10 8.8 7.5 6.3 5 3.8 8

20 30 40 50 60 70

Thermal resistance
[K/W]

Load
current [A]

Power
dissipation [W]

T

A

Ambient temp. [°C]

110

90

80

70

60

50

40

30

20

10

4 Specifications are subject to change without notice (28.02.2007)

RA 60 50 -D 16, RA .. 90 -D .., RA .. 110 -D..

Applications (cont.)

Motor start application (3-phase motors)

Starting time: 5 s max.

Running time/starting time ratio ≥10.

Selection Guide

Dimensions

** = ±0.4 mm
*** = ± 0.5 mm

All dimensions in mm

**

**

***

*** ***

***

Weight Approx. 110 g
Housing material Noryl GFN 1, black
Base plate

50 A type Aluminium, nickel-plated

90 and 110 A types Copper, nickel-plated
Potting compound Polyurethane
Relay

Mounting screws M5

Mounting torque ≤ 1.5 Nm

Control terminal

Mounting screws M3 x 6

Mounting torque ≤ 0.5 Nm

Power terminal

Mounting screws M5 x 6

Mounting torque ≤ 2.4 Nm

Accessories

Protection cover
Heatsinks
DIN rail adapter
Varistors
Fuses

1)

Varistor diameter min. 20 mm

2)

Max. ambient temperature 50°C (one relay per heatsink)

3-phase switching circuit or 2-phase switching circuit

Housing Specifications

For further information refer
to "General Accessories".

Motor size Mains voltage Relay type Varistor voltage

1)

Heatsink2)Full load Fuse type

[kW] current

11 kW 230/400 VAC RA 40 90 -D 10 440 V 1 K/W 24 A 6.921 CP GRC 22x58/80

18.5 kW 230/400 VAC RA 40 110 -D 10 440 V 0.5 K/W 39 A 6.921 CP GRC 22x58/100

22 kW 280/480 VAC RA 48 110 -D 12 550 V 0.5 K/W 34 A 6.921 CP GRC 22x58/100

7.5 kW 400/600 VAC RA 60 50 -D 16 680 V 3 K/W 11 A 6.921 CP GRC 22x58/50

18.5 kW 400/600 VAC RA 60 90 -D 16 680 V 1 K/W 25 A 6.921 CP GRC 22x58/80

30 kW 400/600 VAC RA 60 110 -D 16 680 V 0.5 K/W 39 A 6.921 CP GRC 22x58/100