Power Supplies

Click here for information on our new range of fully EN54 part 4 compliant regulated switch-mode power supplies (pictured right)

Other power supplies available from C-TEC include:-

BF375M 1A REGULATED GENERAL PURPOSE PSU

The BF375M is a general purpose mains to regulated 24V d.c. power supply unit complete with on- board relay. It has three indicators (mains on, battery/power supply fault and output triggered) and two inputs (trigger and hold off). Both inputs require a signal voltage of 5-27V d.c. 1mA and can be used to control the PSU’s internal relay to switch its output voltage on or off. This and the PSUs sophisticated fault monitoring function (battery faults, mains faults and ruptured fuse faults are all reported) makes the BF375M one of the most versatile 1A power supplies available.  Optional back-up batteries can be fitted to maintain the PSU’s output and the unit’s very low current consumption makes it ideal for large installations where multiple units can be connected to one system without compromising the battery stand-by time of the host panel.  Siting each PSU locally to its load can provide considerable cost savings on wiring, reduce the risk of voltage drop, increase flexibility and lessen the risk of total system failure.

BF377 2A UNREGULATED DOOR RELEASE PSU

The BF377 is designed to provide continuous d.c. power for a 24V door release magnet system controllable from a fire alarm control panel.
For automatic release, the power supply requires a signal voltage of 18-30V d.c. 30mA. Manual release can also be achieved via a set of contacts using, for example via an external timer, in order to shut the doors automatically at a predetermined time.  The BF377 does not have a battery back-up facility.

BF368EN 3A REGULATED EN54-4 PSU

Supplied in a light grey metal back box with plastic lid, the BF368EN’s efficient switch mode design allows it to provide a continuous output of 3A at 185-265 V a.c.  Ideal for a variety of applications (door release systems, plant shutdown, sounder extender systems, etc), it offers very low current consumption (allowing in excess of 72 hours standby dependent on battery capacity and load) and is capable of charging 2 to 10 AHr batteries in line with the requirements of EN54. Its very low opto-isolated external hold off allows multiple units to be failsafe connected to a single fire panel without compromising the panel's stand by time.  Other features include a local switch input and a fault output via a normally energized relay SPCO (fault monitoring includes battery fault, mains supply fault and ruptured fuse). Battery monitoring may be disabled when not required.

BF375P 250mA UNREGULATED DOOR RELEASE PSU

Supplied on a compact double gang plate, the BF375P provides a continuous output of 24V 250mA d.c. and is ideal for locating alongside doors which require door retaining magnets. Three trigger methods are available, ‘trigger’ and ‘hold off’ (both of which require a signal voltage of 5-27V d.c. 10mA) and manual button release. Once triggered, the PSU’s output voltage is removed causing any door release magnets connected to it to de-energise. The BF375P is designed specifically for use as a door release PSU and is not suitable for battery charging or any other use. It is also available as part of the BF375PK door retainer and PSU kit.