Data Sheet
Functional class EN 12101-10:2007 
A 
Mains supply 
~230 V; 50 Hz 
Efficiency 
89% max 
Output voltage at 20 ºC 
22,0 V÷ 27,6 V DC – buffer operation 
20,0 V÷ 27,6 V DC – battery-assisted operation 
Maximal resistance of the battery circuit 
300m Ohm 
Ripple voltage (max.) 
30÷150m Vp-p max. 
Current consumption by the PSU 
during battery-assisted operation 
52 ÷ 85mA 
Coefficient of temperature compensation of the 
battery voltage 
-36mV/ ºC (-5 ºC ÷ 40 ºC) 
The LoB low battery voltage indication 
Ubat < 23 V, during battery mode 
Overvoltage protection OVP 
U>32 V±2 V, automatic recovery 
Short-circuit protection SCP 
F
AUX1
, F
AUX2
 melting fuse (failure requires fuse replacement) 
Overload protection OLP 
105-150% of power supply, automatic recovery 
Battery circuit protection SCP and reverse 
polarity connection 
F
BAT
 melting fuse (failure requires fuse replacement) 
Deep discharge battery protection UVP 
U<20 V (± 2%) – disconnection of the batteries 
TAMPER output indicating enclosure opening 
Microswitch TAMPER 
Technical outputs: 
- EPS FLT; indicating AC power failure 
- ALARM; indicating collective failure 
- relay type: 1 A@ 30 V DC /50 V AC 
- 10s time lag. 
- relay type: 1 A@ 30 V DC /50 V AC 
EXTi technical inputs 
Closed input – no indication 
Open input - alarm 
Optical indication: 
- LEDs on the PCB of the power supply unit (see section 3.3) 
- LED panel 
·  230 V mains power supply ON 
·  DC power at the AUX outputs 
·  failure indication 
Additional equipment 
(not included) 
- fuse modules: EN54C-LB4, EN54C-LB8 
- sequential modules: EN54C-LS4, EN54C-LS8 
Operating conditions 
2nd environmental class (EN 12101-10:2007), -5
o
C÷40
o
C 
Enclosure: 
Steel plate DC01, 1,0÷1,5mm, color: RAL 3001 (red) 
Closing: 
Key lock 
Certificates, declarations, warranty  
Certificate of constancy of performance CNBOP-PIB No 1438-CPR-0628,  
certificate of approval CNBOP-PIB No 3501/2019, 
CE, RoHS, 3 years from the production date 
Notes: 
The enclosure does not adjoin the mounting surface so that cables can be led. 
Convection cooling. 
PSU power  Charging current  Enclosure dimensions 
EN54C-2A7 
56,8 W 
0,4 A  335 x 308 x 82 [mm] 
EN54C-2A17 
0,8 A  390 x 406 x 88 [mm] 
EN54C-3A7 
85,2 W 
0,4 A  335 x 308 x 82 [mm] 
EN54C-3A17 
0,8 A  390 x 406 x 88 [mm] 
EN54C-3A28 
1,2 A  425 x 411 x 178 [mm] 
EN54C-5A7 
142 W 
0,4 A  335 x 308 x 82 [mm] 
EN54C-5A17 
0,8 A  390 x 406 x 88 [mm] 
EN54C-5A28 
1,2 A  425 x 411 x 178 [mm] 
EN54C-5A40 
1,8 A  425 x 411 x 178 [mm] 
EN54C-5A65 
2,6 A  416 x 618 x 180 [mm] 
EN54C-10A17 
284 W 
0,8 A  390 x 406 x 88 [mm] 
EN54C-10A28 
1,2 A  425 x 411 x 178 [mm] 
EN54C-10A40 
1,8 A  425 x 411 x 178 [mm] 
EN54C-10A65 
2,6 A  416 x 618 x 180 [mm] 
EN54C series power supply unit
Power supplies for fire alarm systems 27,6 V DC
Pulsar
®
Tel. +48-14-610-19-40, fax: +48-14- 610-19-50, www.pulsar.pl, www.zasilacze.pl, e-mail: sales@pulsar.pl






