24V 1.5A EN54-4 Switch Mode PSU View larger

12V 2A EN54-4 Switch Mode PSU



  • VDS certified to EN54-4 (1997/A2:2006).
  • Ideal for connecting to 12V security system STUs or auto-diallers to provide BS5839-1 compliant remote monitoring facilities (see below for details).
  • Deep discharge battery protection and EN54 compliant reporting of battery impedance faults.
  • Includes a single-pole volt-free changeover relay that switches for any fault condition.
  • Three LED indicators - supply present, general fault and auxiliary fault (for optional connection to third-party equipment).
  • Link selectable battery charging capacity.
  • Environmentally-friendly charging circuit - dissipates just 0.35W compared to the industry norm of 2.55W.
  • Optional 'caged' and 'PCB-only' versions available with exactly the same electronics (order code BF360-12/E and BF360-12/C respectively).


More details

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More Information

The BF360-12 is designed to combat an area of fire alarm system non-compliance that is often overlooked - their connection to remote monitoring centres via 12V security system STUs or autodiallers.

Fire alarm systems that require such monitoring are typically connected to 12V security system STUs already fitted on site. Unfortunately, the power supplies used to power these STUs normally only offer 8 hours standby, are not connected to a dedicated mains supply and do not include the features demanded by EN54-4 (such as battery impedance monitoring, temperature compensated charging, CPD/R compliance, etc).

The BF360-12 helps make this practice obsolete by allowing the use of 12V STUs with a cost-effective EN54-4 compliant PSU thereby facilitating compliance with BS5839-1 (or European equivalents).

An optional STU mounting plate is also available (order code BF360SP).

Technical Specifications

Approvals/certificationsCertified to EN54-4 by the VdS (0786-CPD-20671) / (G208155)
Application/operationA boxed Mains to regulated DC power supply providing 2A @ 12V DC. Fully compliant with EN54-4, it includes a single pole volt-free changeover relay that switches for any fault condition.
Mains supply230V 50/60Hz.
Mains rated current350mA maximum. (80.5 VA)
Total output current limited to2A (Max. continuous output current).
OutputOption A: 1.8A DC current; 0.2A charge current. Option B: 1.3A DC current; 0.7A charge current.
Battery charge capacity2 Ah to 12 Ah (Note Max. battery size/type determined by cabinet size is 3 Ah VRLA (with STU plate fitted) or 8 Ah (without STU plate fitted)).
Max battery size and type1 x 12V 3 Ah VRLA (with STU plate fitted); 1 x 12V 7 Ah VRLA (without STU plate fitted).
IndicatorsSupply Present (Green); General Fault (Amber); Auxiliary Fault (Amber); Hazardous Voltages Present (Red).
ConnectionsMains Input (CONN1); Supply Output (CONN3); Battery Input (CONN3); Fault Relay (CONN4); Charge Off Input (CONN5). Battery Charge Current Link (PLK1); Battery Monitoring On/Off Link (PLK2); High Temp. Output (PL2).
Product dimensions (mm)380 W x 235 H x D 96mm.
Construction & finishPlastic lid and base; RAL7035 textured.
IP RatingIP30 (designed for indoor use only).
Weight1.55kg (without batteries).
Operating conditions/temperature-5ºC to +40ºC. Max relative humidity: 95%.



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Dimensions & Mounting Information

Product dimensions:380 W x 235 H x 96 D mm.
Hole required for flush mounting:367 W x 220 H x 75 D mm. No bezel required.

BIM/CAD Drawings

BF360-12 flush mounted BIM (RFA)


BF360-12 surface mounted BIM (RFA)


Approval Certificates

Approval Certificate (VDS)


EC Certificate of Conformity (CPR)


Declaration of Performance (C-TEC)


Declaration of Conformity (C-TEC)