Carlo Gavazzi RA.... .....S Catalog Page

Specifications are subject to change without notice (08.09.00) 1

Product Description Ordering Key

Solid State Relays
System Monitoring Relays (Sense Relay)

Type RA.... .....S

•System (line and load) monitoring relay

•Zero switching

•Rated operational current: 25, 50, 90 and 110 AACrms

•Rated operational voltage: 120, 230, 400 and 480 VACrms

•High surge current capability

•Alarm output signal

•LED indication for alarm and supply

The system monitoring solid
state relay (sense relay) pro­vides an alarm output in the
event of a circuit failure.
Internal circuits monitor:

- line voltage/line current

- correct functioning
of the SSR

- SSR input status

The relay is designed for
applications where immediate
fault detection is required.
A red LED indicates an
alarm, a green LED indicates
DC control supply OK (half
LED light intensity) resp.
relay switched ON (full LED
light intensity).

Solid State Relay
Switching mode
Rated operational voltage
Rated operational current
Control input
Non-rep. peak voltage
Alarm output type
Sense SSR

RA 23 25 H 06 NO S

Switching mode Rated operational Rated operational Control Non-rep. peak Alarm output

voltage current input voltage type

A: Zero switching 12: 120 VACrms 25: 25 AACrms H: Active high 06: 650 V

p

NO: NPN, NO

23: 230 VACrms 50: 50 AACrms L: Active low 10: 1000 V

p

NC: NPN, NC

40: 400 VACrms 90: 90 AACrms 12: 1200 V

p

PO: PNP, NO

48: 480 VACrms 110: 110 AACrms PC: PNP, NC

Rated Control Alarm Rated operational current
op. input output
voltage type 25 AACrms 50 AACrms 90 AACrms 110 AACrms

120 Active high NPN, NO RA 1225 H06NOS RA 1250 H06NOS RA 1290 H06NOS RA 12110 H06NOS
VACrms NPN, NC RA 1225 H06NCS RA 1250 H06NCS RA 1290 H06NCS RA 12110 H06NCS

PNP, NO RA 1225 H06POS RA 1250 H06POS RA 1290 H06POS RA 12110 H06POS
PNP, NC RA 1225 H06PCS RA 1250 H06PCS RA 1290 H06PCS RA 12110 H06PCS

Active low NPN, NO RA 1225 L06NOS RA 1250 L06NOS RA 1290 L06NOS RA 12110 L06NOS

NPN, NC RA 1225 L06NCS RA 1250 L06NCS RA 1290 L06NCS RA 12110 L06NCS
PNP, NO RA 1225 L06POS RA 1250 L06POS RA 1290 L06POS RA 12110 L06POS
PNP, NC RA 1225 L06PCS RA 1250 L06PCS RA 1290 L06PCS RA 12110 L06PCS

230 Active high NPN, NO RA 2325 H06NOS RA 2350 H06NOS RA 2390 H06NOS RA 23110 H06NOS
VACrms NPN, NC RA 2325 H06NCS RA 2350 H06NCS RA 2390 H06NCS RA 23110 H06NCS

PNP, NO RA 2325 H06POS RA 2350 H06POS RA 2390 H06POS RA 23110 H06POS
PNP, NC RA 2325 H06PCS RA 2350 H06PCS RA 2390 H06PCS RA 23110 H06PCS

Active low NPN, NO RA 2325 L06NOS RA 2350 L06NOS RA 2390 L06NOS RA 23110 L06NOS

NPN, NC RA 2325 L06NCS RA 2350 L06NCS RA 2390 L06NCS RA 23110 L06NCS
PNP, NO RA 2325 L06POS RA 2350 L06POS RA 2390 L06POS RA 23110 L06POS
PNP, NC RA 2325 L06PCS RA 2350 L06PCS RA 2390 L06PCS RA 23110 L06PCS

Type Selection

Selection Guide

2 Specifications are subject to change without notice (08.09.00)

Supply voltage range 20 to 32 VDC
Supply current @ 24 VDC ≤ 40 mA DC
Response time pick-up @ 50 Hz

≤ 10 ms

Response time drop-out @ 50 Hz

≤ 10 ms

Active high control input

Pick-up voltage Typ. 7 VDC
Drop-out voltage Typ. 6.8 VDC
Input current (Vc = 32 V) ≤ 4 mA

Active low control input

Pick-up voltage Typ. Vcc - 10 VDC
Drop-out voltage Typ. Vcc - 10 VDC
Input current (Vcc = 32 V) ≤ 4 mA

RA.... .....S

PNP Alarm output

Alarm output voltage open 0 VDC
Alarm output voltage @ 100 mA

Vcc - 2 VDC

Alarm output current ≤ 100 mA

NPN Alarm output

Alarm output voltage open ≤ 32 VDC
Alarm output voltage @ 100 mA

2 VDC

Alarm output current ≤ 100 mA

General Specifications

Control Specifications

Output Specifications

Selection Guide (cont.)

RA12...06..S RA23...06..S RA40...10..S RA48...12..S

Operational voltage range 60 to 140 VACrms 170 to 250 VACrms 150 to 440 VACrms 180 to 530 VAC
Non-rep. peak voltage 600 V

p

600 V

p

1000 V

p

1200 V

p

Zero voltage turn-on ≤ 15 V ≤ 15 V ≤ 15 V ≤25 V
Operational frequency range 45 to 65 Hz 45 to 65 Hz 45 to 65 Hz 45 to 65 Hz
Power factor cos ϕ ≥0.5 @ 120 VACrms ≥ 0.5 @ 230 VACrms ≥ 0.5 @ 400 VACrms ≥ 0.5 @ 400 VACrms

Approvals UL, CSA UL, CSA UL, CSA UL, CSA
CE-marking Yes Yes Yes Yes

RA..25.06..S RA..50.06..S RA..90.10..S RA..110.12..S

Rated operational current AC 1 ≤ 25 Arms ≤ 50 Arms ≤ 90 Arms ≤ 110 Arms
Min. operational load current ≤ 200 mA ≤ 200 mA ≤ 200 mA ≤ 200 mA
Non-rep. surge current t=10 ms

≤ 250 A

p

≤ 600 A

p

≤ 1000 A

p

≤ 1500 A

p

Off-state leakage current
@ rated voltage and frequency ≤ 6 mA ≤ 6 mA ≤ 6 mA ≤ 6 mA

I2t for fusing t=1-10 ms ≤ 310 A2s ≤ 1800 A2s ≤ 5000 A2s ≤ 11250 A2s
Critical dv/dt ≥ 500 V/µs ≥ 500 V/µs ≥ 500 V/µs ≥ 500 V/µs

Rated Control Alarm Rated operational current
op. input output
voltage type 25 AACrms 50 AACrms 90 AACrms 110 AACrms

400 Active high NPN, NO RA 4025 H10NOS RA 4050 H10NOS RA 4090 H10NOS RA 40110 H10NOS
VACrms NPN, NC RA 4025 H10NCS RA 4050 H10NCS RA 4090 H10NCS RA 40110 H10NCS

PNP, NO RA 4025 H10POS RA 4050 H10POS RA 4090 H10POS RA 40110 H10POS
PNP, NC RA 4025 H10PCS RA 4050 H10PCS RA 4090 H10PCS RA 40110 H10PCS

Active low NPN, NO RA 4025 L10NOS RA 4050 L10NOS RA 4090 L10NOS RA 40110 L10NOS

NPN, NC RA 4025 L10NCS RA 4050 L10NCS RA 4090 L10NCS RA 40110 L10NCS
PNP, NO RA 4025 L10POS RA 4050 L10POS RA 4090 L10POS RA 40110 L10POS
PNP, NC RA 4025 L10PCS RA 4050 L10PCS RA 4090 L10PCS RA 40110 L10PCS

480 Active high NPN, NO RA 4825 H12NOS RA 4850 H12NOS RA 4890 H12NOS RA 48110 H12NOS
VACrms NPN, NC RA 4825 H12NCS RA 4850 H12NCS RA 4890 H12NCS RA 48110 H12NCS

PNP, NO RA 4825 H12POS RA 4850 H12POS RA 4890 H12POS RA 48110 H12POS
PNP, NC RA 4825 H12PCS RA 4850 H12PCS RA 4890 H12PCS RA 48110 H12PCS

Active low NPN, NO RA 4825 L12NOS RA 4850 L12NOS RA 4890 L12NOS RA 48110 L12NOS

NPN, NC RA 4825 L12NCS RA 4850 L12NCS RA 4890 L12NCS RA 48110 L12NCS
PNP, NO RA 4825 L12POS RA 4850 L12POS RA 4890 L12POS RA 48110 L12POS
PNP, NC RA 4825 L12PCS RA 4850 L12PCS RA 4890 L12PCS RA 48110 L12PCS

Specifications are subject to change without notice (08.09.00) 3

Sense Specifications

RA.... .....S

RA..25.....S RA..50.....S RA..90.....S RA..110.....S

Operating temperature

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

Storage temperature

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

Junction temperature ≤ 125°C (257ºF) ≤ 125°C (257ºF) ≤ 125°C (257ºF) ≤ 125°C (257ºF)
Rthjunction to case ≤ 1.25 K/W ≤ 0.65 K/W ≤ 0.35 K/W ≤ 0.30 K/W
R

th

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

Mains input/load output

Load output/mains input

C/V

VCC

Control
input

Com.

Alarm
output

Rated insulation voltage

Input to output ≥ 4000 VACrms

Rated insulation voltage

Output to case ≥ 4000 VACrms

IC

Alarm output

Control input

+ 3

6
7
4

2

1

Line/load

RAxxxxxxNxS

C/V

1

+ 3

6
7
4

IC

Alarm output

Control input

2

Line/load

RAxxxxxxPxS

4 ­5 Not con.

3 +

6 Control
7 Alarm

Thermal Specifications

Insulation Wiring Diagrams

Functional Diagram

RA..25.....S RA..50.....S RA..90.....S RA..110.....S

Current

Sensed load current ≥ 50 mA ≥ 50 mA ≥ 50 mA ≥ 50 mA
Non-sensed leakage current ≤ 20 mA ≤ 20 mA ≤ 20 mA ≤ 20 mA

Voltage

Sensed line voltage ≥ 60 Vrms ≥ 120 Vrms ≥ 150 Vrms ≥ 180 Vrms
Non-sensed line voltage ≤ 30 Vrms ≤ 50 Vrms ≤ 80 Vrms ≤ 100 Vrms

Timing

Response time from fault to
alarm output ≤ 100 ms ≤ 100 ms ≤ 100 ms ≤ 100 ms

Short-circuit of semiconductor Will be sensed Will be sensed Will be sensed Will be sensed

4 Specifications are subject to change without notice (08.09.00)

RA ..90 .....S

RA ..25 .....S RA ..50 .....S

T

A

Ambient temp. [°C]

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

50

45

40

35

30

25

20

15

10

5

Power dissipa­tion [W]

Thermal resistance
[K/W]

Load
current [A]

Power dissipa­tion [W]

2 1.7 1.4 1 0.71 0.40 32

2.5 2.1 1.8 1.4 1 0.66 27

3.1 2.7 2.3 1.9 1.4 1 23

4 3.5 3 2.5 2 1.4 20

4.9 4.3 3.7 3.1 2.5 1.9 16

6.2 5.4 4.6 3.9 3.1 2.3 13

8.1 7.1 6.1 5.1 4 3 10

11.3 9.9 8.5 7.1 5.6 4.2 7

- 15.6 13.3 11.1 8.9 6.7 5

- - - - 18.7 14 2

20 30 40 50 60 70

25

22.5

20

17.5

15

12.5

10

7.5

5

2.5

T

A

Ambient temp. [°C]

Load
current [A]

Thermal resistance
[K/W]

90

80

70

60

50

40

30

20

10

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

T

A

Ambient temp. [°C]

Thermal resistance
[K/W]

Load
current [A]

Power dissipa­tion [W]

RA.... .....S

Heatsink Dimensions (load current versus ambient temperature)

Normal Operation

Relay Relay

OFF ON

Line

Voltage

Loss

Line

Voltage

Loss

Load

Open

Circuit

DC

Supply

Loss

DC

Supply

Loss

Relay

Remains

OFF

Shorted

Relay

Shorted

Relay

Line Voltage

= Half LED light intensity

Operation Diagram

Load Current

Control

Green LED

DC Supply

Red LED

Alarm output (normally open type)

RA ..110 .....S

T

A

Ambient temp. [°C]

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

110

90

80

70

60

50

40

30

20

10

Power dissipa­tion [W]

Thermal resistance
[K/W]

Load
current [A]

Specifications are subject to change without notice (08.09.00) 5

RA.... .....S

Housing Specifications

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

Mounting screws M5
Mounting torque ≤ 1.5 Nm

Power terminal

Mounting screws M5 x 6
Mounting torque ≤ 2.4 Nm

Control connector 5 pole,

centre distance 2.54 mm

R-System
Cable sense
5-wire
Cable length in cm

* 0: No connector mounted (Method 1300-105-424)

1: 1 connector mounted
2: 2 connectors mounted

Heatsinks
DIN rail adapter
Varistors
Fuses
Connector for ribbon cable: Methode 1300-105-424
Header for PCB mounting: Methode 1100-8-105-01
Ribbon cable: 5 x 0.5 mm

2

,

centre distance 2.54 mm

ALARM LED
SUPPLY LED

5.2

13

2 x M5

APPLY

HEATSINK

COMPOUND

17.8

5.1

58.245.5

5.3

14.5
4 x M
M = 2.54

47.5

29

24.5

All dimensions in mm

Dimensions Accessories

Ribbon Cable Selection

RCS 5-200-0*

Carlo Gavazzi

Heatsink Thermal ...for power

(See “General Accessories”) resistance.. dissipation

No heatsink required --- N/A

RHS 300 5.00 K/W > 0 W
RHS 100 3.00 K/W > 25 W
RHS 45A 2.70 K/W > 60 W
RHS 45B 2.00 K/W > 60 W

RHS 90 1.35 K/W > 60 W
RHS 45A plus fan 1.25 K/W > 0 W
RHS 45B plus fan 1.20 K/W > 0 W

RHS 112 1.10 K/W > 100 W
RHS 301 0.80 K/W > 70 W

RHS 90 plus fan 0.45 K/W > 0 W
RHS 112 plus fan 0.40 K/W > 0 W
RHS 301 plus fan 0.25 K/W > 0 W

Consult your distributor > 0.25 K/W N/A

Infinite heatsink - No solution

--- N/A

Heatsink Selection