> Pulsar EN54C-3A28 fire alarm power supply 27.6 V / 3 A
> Source: https://pap.fi/en/tuote/pulsar-en54c-3a28/
> Full site in machine-readable form (in Finnish): https://pap.fi/llms-full.txt
> Pages in English: https://pap.fi/llms.txt

# Pulsar EN54C-3A28 fire alarm power supply 27.6 V / 3 A, for 2 × 28 Ah batteries

Product code 61443

EN 54-4 compliant 27.6 V power supply for fire alarm and aspirating equipment. Continuous output current 1.8 A, space for two 28 Ah batteries. LED indicators, red steel enclosure.

-   Approved to EN 54-4 and EN 12101-10, CPR 1438-CPR-0628
-   Output 27.6 V DC, continuous 1.8 A (short-term 3 A)
-   Batteries 2 × 28 Ah (max. 28 Ah), charging current 1.2 A
-   Relays for mains failure (EPS) and common fault (ALARM)
-   Two outputs AUX1 and AUX2, fuse protected

## Product description

EN54C-3A28 is a power supply in Pulsar’s EN54C series for fire alarm system equipment, such as aspirating smoke detectors. It is tested to EN 54-4 and EN 12101-10 and holds CPR certificate 1438-CPR-0628 issued by CNBOP-PIB. The unit supplies 27.6 V DC to two fuse-protected outputs (AUX1 and AUX2) and charges the backup batteries. The continuous output current is 1.8 A and the short-term maximum 3 A (5 min). The enclosure holds two 28 Ah batteries.

The unit monitors the mains, battery and outputs. Mains failure (EPS, 10 s delay) and common fault (ALARM) are signalled by relays, and the enclosure has a tamper switch. Protection includes short-circuit, overload and overvoltage protection, deep discharge protection and reverse polarity protection for the battery. The status is shown by LED indicators. The enclosure is red-painted sheet steel (RAL 3001) with a lock.

## Technical data

- **Product code:** 61443
- **Manufacturer:** Pulsar
- **Manufacturer’s code:** EN54C-3A28
- **Product group:** Aspirating smoke detection › Power supplies
- **Supply voltage:** 230 V AC, 50 Hz
- **Current consumption:** 0.9 A (230 V AC)
- **Output voltage:** 27.6 V DC
- **Output current:** 1.8 A continuous, 3 A short-term (5 min)
- **Output power:** 85.2 W (efficiency 89%)
- **Battery bank:** 2 × 28 Ah (max. 28 Ah)
- **Battery charging current:** 1.2 A
- **Outputs:** AUX1, AUX2
- **Relays:** EPS and ALARM, 1 A / 30 V DC
- **Fuses:** FBAT F6.3 A, FAUX1–2 F5 A
- **IP rating:** IP30
- **Protection class:** I
- **Operating temperature:** −5…+40 °C
- **Storage temperature:** −25…+60 °C
- **Humidity:** 20–90%
- **Colour:** Red (RAL 3001)
- **Dimensions:** 420 × 407 × 178 mm (+8 mm) (W × H × D)
- **Weight:** 7.4 kg (without batteries)
- **EN 54 approval:** EN 54-4
- **Standards:** EN 12101-10
- **CPR:** 1438-CPR-0628

## Documents

Original manufacturer documents (PDF).

### Technical datasheets

-   [Datasheet (series): EN54C power supplies](https://pap.fi/liitteet/valmistajat/pulsar__EN54C_series_datasheet_EN.pdf) PDF · English · 3.5 MB
-   [Dimensional drawing EN54C-3A28](https://pap.fi/liitteet/valmistajat/pulsar__EN54C-3A28_drawing.pdf) PDF · multilingual · 1.3 MB

### User manuals

-   [User manual (series): EN54C power supplies](https://pap.fi/liitteet/valmistajat/pulsar__EN54C_series_manual_EN.pdf) PDF · English · 1.6 MB

### Certificates and declarations

-   [CPR certificate of constancy of performance, no. 1438-CPR-0628](https://pap.fi/liitteet/valmistajat/pulsar__EN54C_CPR_certificate_EN.pdf) PDF · multilingual · 5.2 MB valid 7 January 2019 – 6 January 2029
-   [Declaration of performance (DoP), no. DoP/EN54C\_EN54C-LCD/2019/1](https://pap.fi/liitteet/valmistajat/pulsar__EN54C_DoP_EN.pdf) PDF · multilingual · 417 kB
-   [CNBOP-PIB certificate of admittance (Poland), no. 5222/2024](https://pap.fi/liitteet/valmistajat/pulsar__EN54C_CNBOP_approval_EN.pdf) PDF · English · 3.1 MB valid 16 June 2026 – 6 January 2029