Main range of product
Phaseo Optimum

product or component type
Safety and isolation transformer

rated power in VA
250 VA

input voltage
230 V AC single phase, terminal(s): N-L1
400 V AC phase to phase, terminal(s): L1-L2

output voltage
230 V AC

secondary winding
Single

protective cover
Without

ambient air temperature for operation
-20...50 Celsius degrees

Complementary input voltage limits
207...253 V
360...440 V

network frequency limits
47...63 Hz

input voltage tolerance
+/- 15 V

efficiency
90 %

power dissipation in W
27.8 W

output sustained overvoltage
5 % (no load, hot state)

voltage drop at rated load
<= 0.7 %

no load losses
12.5 W

short-circuit voltage
0,0585

output protection type
Against overload, protection technology: external
Against overvoltage, protection technology: external
Against short-circuits, protection technology: external

connections - terminals
Screw type terminals for input connection, connection capacity: 5 x 4 mm^2AWG 11
Screw type terminals for input ground connection, connection capacity: 1 x 4 mm^2AWG 11
Screw type terminals for output connection, connection capacity: 2 x 4 mm^2AWG 11

marking
CE

fixing mode
By 4 screws, screw(s) D= 5.8 mm on horizontal panel with derating to 90 %
By 4 screws, screw(s) D= 5.8 mm on vertical panel, operating position: horizontal
By 4 screws, screw(s) D= 5.8 mm on vertical panel, operating position: vertical

operating altitude
3000 m

electrical insulation class
Class B

width
120 mm

height
122 mm

depth
85 mm

product weight
4.4 kg

Environment product certifications
UR
EAC

standards
UL 506

IP degree of protection
IP20

environmental characteristic
EMC conforming to EN 62041
Safety conforming to EN 61558-1
Safety conforming to EN 61558-2-6

protective treatment
TC

ambient air temperature for storage
-40...80 Celsius degrees

overvoltage category
Class I conforming to VDE 0106-1

dielectric strength
Between winding and ground
Between primary and secondary