Carlo Gavazzi RA 24.. -D 06 L, RA 40.. -D 08 L Catalog Page

Specifications are subject to change without notice 1

• AC Solid State Relay

• Zero switching

• For ohmic load applications

• Rated operational current: 10 and 25 AACrms

• Rated operational voltage: Up to 400 VACrms

• 10 A type meets CISPR 22 B requirements

This relay is designed for use
in applications where low
electromagnetic emission is
essential.

Today, household and electri­cal appliances, information
technology- and medical
equipment must conform with
the latest EN standards.
These new EN standards de­fine general and product relat­ed requirements for noise im­munity and noise emission.
The RA24..-D06L and RA40..­D08L are relays for applica-

Ordering Key

Solid State Relays

Solid State Relay
Switching mode
Rated operational voltage
Rated operational current
Control voltage
Non-rep. peak voltage
Low RFI

tions where the noise emis­sion must be low and where
the customer does not want
to relinquish all Solid State Re­lay features. The relay is avail­able with zero crossing func­tion. It is designed for resistive
loads, i.e. power factor = 1.

Predestined applications for
this relay are office machines,
ovens and cookers for domes­tic and industrial use, theatre
or stage lighting systems, film
processing and copying ma­chines or medical equipment.

Product Description

RA 24.. -D 06 L RA 40.. -D 08 L

Operational voltage range 180 to 265 VACrms 340 to 530 VACrms

Non-rep. peak voltage ≥ 650 V

p

≥ 850 V

p

Operational frequency range 45 to 65 Hz 45 to 65 Hz
Power factor 1 1
Approvals UL, CSA, VDE UL, CSA, VDE

Type Selection

Switching mode Rated opera- Rated operational Control voltage Non-rep. voltage Electromagnetic

tional voltage current noise emission

A: Zero switching 24: 230 VACrms 10: 10 AACrms -D: 3 to 32 VDC 06: 650 V

p

L: Low RFI

40: 400 VACrms 25: 25 AACrms 08: 850 V

p

Selection Guide

General Specifications

Rated operational Non-rep. voltage Electromagnetic Control voltage Rated operational current
voltage noise emission 10 AACrms 25 AACrms

230 VACrms 650 Vp Low RFI 3 to 32 VDC RA 2410 -D 06 L RA 2425 -D 06 L

400 VACrms 850 Vp Low RFI 3 to 32 VDC RA 4010 -D 08 L RA 4025 -D 08 L

Low Electromagnetic Noise Emission
Types RA 24.. -D 06 L, RA 40.. -D 08 L

RA 24 25 -D 06 L

2 Specifications are subject to change without notice

RA 24.. -D 06 L, RA 40.. -D 08 L

Control voltage range 3 to 32 VDC

Pick-up voltage ≤ 3 V
Drop-out voltage ≥ 1 V
Reverse voltage ≤ 32 VDC
Input impedance 1 kΩ
Response time ≤ 1/2 cycle

Input Specifications Insulation

Rated insulation voltage

Input to output ≥ 4000 VACrms

Rated insulation voltage

Output to case ≥ 4000 VACrms

Reference voltage 500 VACrms
Insulation meets VDE 0700

requirements

Output Specifications

RA ..10 -D 0. L RA ..25 -D 0. L

Rated operational current AC 1 10 Arms 25 Arms
Min. operational current AC 1 1 Arms 2 Arms

Rep. overload current t=1 s ≤ 30 A

p

≤ 50 A

p

Non-rep. surge current t=20 ms 90 A

p

200 A

p

Off-state leakage current ≤ 1 mArms ≤ 1 mArms

I

2

t for fusing t=1-10 ms ≤ 120 A2s ≤ 200 A

2

s

On-state voltage drop ≤ 1.2 Vrms ≤ 1.2 Vrms
Critical dV/dt off-state ≥ 250 V/µs ≥ 250 V/µs
Synchronization current ≤ 20 mArms ≤ 20 mArms

Thermal Specifications

RA ..10 -D 0. L RA ..25 -D 0. L

Operating temperature range -20 to +80°C (-4 to +176ºF) -20 to +80°C (-4 to +176ºF)
Storage temperature range -40 to +100°C (-40 to +212ºF) -40 to +100°C (-40 to +212ºF)
Junction temperature ≤ 125°C (257ºF) ≤ 125°C (257ºF)

R

th

junction-case ≤ 2.5 K/W ≤ 1.8 K/W

Control
input

Functional Diagram

Wiring Diagram

Control
input

Line

Load

S

Synchr.
voltage

Mains input

Load output

Synchr.
voltage

S

Specifications are subject to change without notice 3

Heatsink Dimensions (load current versus ambient temperature)

RA 24.. -D 06 L, RA 40.. -D 08 L

RA ..10 -D 0. L

5.7 5.0 4.3 3.6 2.8 2.0 14

6.2 5.4 4.6 3.9 3.1 2.2 12

7.4 6.4 5.5 4.6 3.7 2.7 11

8.5 7.4 6.3 5.3 4.2 3.1 9

9.8 8.6 7.4 6.1 4.9 4.9 8

- 10.2 8.7 7.2 5.8 6.2 7

- - 10.5 8.7 7.0 5.7 6

- - - 10.7 8.5 4.7 5

- - - - 10.8 8.1 4

- - - - - 10.7 3

20 30 40 50 60 70

10

9

8

7

6

5

4

3

2

1

T

A

Thermal resistance
[K/W]

Power
dissipation [W]

Load
current [A]

RA ..25 -D 0. L

1.0 0.8 0.5 0.25 - - 38

1.5 1.1 0.8 0.5 0.26 - 33

1.9 1.6 1.2 0.9 0.5 - 29

2.5 2.1 1.7 1.3 0.9 0.5 25

3.3 2.9 2.4 1.9 1.4 1.0 21

4.4 3.9 3.3 2.7 2.1 1.5 17

5.7 5.0 4.3 3.6 2.9 2.1 14

7.5 6.6 5.6 4.7 3.7 2.8 11

10.6 9.3 8.0 6.6 5.3 4.0 8

- - - 10.7 8.5 6.4 5

20 30 40 50 60 70

T

A

Ambient temp. [°C]

Load
current [A]

Thermal resistance
[K/W]

Power
dissipation [W]

Ambient temp. [°C]

25

22.5

20

17.5

15

12.5

10

7.5

5

2.5

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

The very low, wire-conduct­ed RFI feature of this relay is
obtained by synchronized fir­ing of the output triac in the
zero crossing of the mains
voltage. Therefore the relay
must have the synchroniza­tion input connected to the
mains, either to neutral or to
the phase depending on how
the load is connected.

The relay can only switch re­sistive loads with a power fac­tor of 1.

A minimal load current of 1A
for the RA ..10 -D 0. L and 2 A
for the RA ..25 -D 0. L is re­quired as long as the control
input is activated.

Applications

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

Accessories

Heatsinks
DIN rail adapter
Varistors
Fuses

Connection Diagram

Control
input

N/L

2

L

1

S

Load

For further information refer
to "General Accessories".

4 Specifications are subject to change without notice

RA 24.. -D 06 L, RA 40.. -D 08 L

Weight Approx. 110 g
Housing material Noryl GFN 1, black
Base plate Aluminium
Potting compound Polyurethane
Relay

Mounting screws M5

Mounting torque ≤ 1.5 Nm

Control and Synchr. terminal

Mounting screws M3 x 6

Mounting torque ≤ 0.5 Nm

Power terminal

Mounting screws M5 x 6

Mounting torque ≤ 2.4 Nm

Dimensions

** = ±0.4 mm
***= ± 0.5 mm

**

**

***

*** ***

***

Cover

Housing Specifications

Connection Examples

RA24xx-D06L and RA40xx-D08L

3-phase application with three heat elements.

SSR

SSR

L1

L2

L3

SSR

L1

L2

3-phase application with one heat element.

SSR0

SSR

L1

L2

N

SSR

L2

SSR

L1

N

1-phase application without ground.

3-phase application with two heat elements without ground.