The relay separator of intrinsically safe circuits is designed to separate non-intrinsically safe and intrinsically safe circuits.

In the non-intrinsically safe circuit there is a relay coil of the PSOI separator, while its contact can be switched to intrinsically safe circuits of protection rating ia or ib.

The relay separator of intrinsically safe and non-intrinsically safe circuits PSOI thus provides information from non-intrinsically safe control circuits to intrinsically safe or non-intrinsically safe circuits of automation systems.

Explosion protection

Marking
I (M1) [Ex ia Ma] I
II (1)G [Ex ia Ga] IIC T6
II(1)D [Ex ia Da] IIIC T85°C

Ambient temperature
-40°C to + 55°C or-40°C to + 70°C

Certificate
OBAC 05 ATEX 021X

Rated values

Ingress protection rating
IP20

Intrinsically safe contacts

Contact material
Au

Load current – switching
3/0.6 A

Circuit switching voltage
intrinsically safe AC/DC
30 V

Rated AC switching power
25 VA

Max. switching power AC (250 V)
25 VA

Minimum switching current
12/5 V/mA

Relay coil

Control voltages AC (50/60 Hz)/DC
12–24-42/48-60-110…125-230..240 V

Voltage range AC (50/60 Hz)
(0.8… 1.1) Un

DC voltage range
(0.7…1.2)Un

Mechanical data

Mechanical strength
10 x 106

Electrical Strength – switching
60 x 104

Switching time
7/11 ms

Insulation strength EN 61810-5
4 kV / 3

Open contact insulation strength (AC/DC)
1000 V

Selection Chart
Contact type Code
Changeover contact 1
Make contact with diode 2
NO contact with NAMUR system 3
NO contact 4
Coil voltage Code
Coil voltage 12 V AC / DC 1
24 V AC / DC coil voltage 2
Coil voltage 42/48 V AC / DC 3
Coil voltage 60 V AC / DC 4
Coil voltage 110… 125 V AC / DC 5
Coil voltage 220… 240 V AC / DC 6
12V DC coil voltage 7
24 V DC coil voltage 8
24 V AC / DC coil voltage 9
Coil voltage 42/48 V AC / DC 10
Coil voltage 230 V AC 11

Coding

P S O I – * *
A B
A Contact type:
1 – Changeover contact
2 – NO contact with diode
3 – NO contact with NAMUR system
4 – NO contact
B Coil voltage:
1 – 12 V AC / DC
2 – 24 V AC / DC
3 – 42/48 V AC / DC
4 – 60 V AC / DC
5 – 110 … 125 V AC / DC
6 – 220 … 240 V AC / DC
7 – 12 V DC
8 – 24 V DC
9 – 24 V AC / DC
10 – 42/48 V AC / DC
11 – 230 V AC / DC