Reliable 12 or 24 VDC Output
This Power Supply provides a field selectable 12 or 24 volt DC output. The required output voltage is accurately regulated to fraction of a volt, even when operating under maximum load conditions.
Output current is safely sustained, in both the 2 and 4 amp power supplies, while continuously operating under heavy loads. The extra-large capacity heat sink assures a long operating life in the most strenuous environments.
Totally Protected Circuitry
Both,110 VAC input and DC output is fused to protect the system against over loads and shorts and the switching regulator prevents excessive current draw. The battery charging circuit and the fire alarm input are thermally protected.
Automatic Battery Charger
The power back-up batteries (optional - see below
) are automatically charged according to the selected DC output voltage to provide immediate 12 or 24 VDC output upon loss of AC power. The adjustable trickle-charge output will maintain the number of batteries required for emergency back-up.
Fail-Safe Fire Alarm Input
Innovative design assures DC output cutoff by detecting ground fault is wiring to the fire panel; unlike other power supplies that may fail to release the FAR if any wiring insulation is scraped in the connection to the fire panel.
LED Status Indicators
ON-board LEDs provide visual indication of power supply operating conditions. A green LED is illuminated when AC power is present. The red LED is lit to indicate DC power at the output providing a quick determination of fire alarm input status. When the amber LED is lighted a low battery condition exits
Auxiliary Alarm Outputs
Alarm relay outputs are available to indicate loss of AC power and a low battery condition. The slave output from the fire alarm relay can be used to monitor the fire alarm input or to connect an endless number of power supplies to a single output on the building fire panel. For more relays see the optional 4 DPDT relay board below. This board can be used for turning on lights or alarms.
Remote Reset & Power Supply Status
An enclosure mounted fire alarm reset button and auxiliary status LEDs are also available.
Quick Easy Installation
Installation is fast, from
mounting the enclosure to the
connection of wiring.. No need
to add additional relays for alarm
monitoring or the fire alarm
interface.
The 110 VAC tie-in is quickly
connected to the UL listed
terminal strip with built in fuse.
Separate termination points are
provided for connection of
battery backup and the main DC
fused output.
Plug -on terminals speed wiring
for alarm connections and to
batteries used for back-up
power. Large tri-barrier terminal
blocks shield board components
near the low voltage input and
output connections.
Specifications: Physical size
Board only - 3" wide x 6" long x
2-3/8" high (including heat sink).
Mounting- Standard 3"
Snap-Track or attachment with
stand-offs.
Enclosure: - 12" wide x16" high x
4 " deep with lockable hinged
cover.
Electrical:
AC Input - Fused 110 VAC to
step-down transformer.
#4202 - 2 amp Output @ 12 or
24 VDC (28 volt - 2.8 amp
transformer
#4202 - 4 map Output @ 12 or
24 VDC (28 volt - 2.8 amp
transformer)
DC Voltage Range - Field
Adjustable from .7 volts below to
5.0 volts above jumper selected
DC output.
DC Regulation - Accurately
regulated to within 0.2% of
voltage setting.
DC Filter - Ripple almost nil,
measuring only .002 @ 24 volts
DC.
Battery Charging - Adjustable
trickle charge (factory set @ 300
mA for 12 volt battery back-up).
For the 8 output: .5 amps x 8 @ 24vdc - or .5 amps x 6 @ 12vdc - both values are usually adequate
for most magnetic locks or electric strikes.
Product Reviews for Dortronics 12-24 VDC 4 Amp Heavy Duty Power Supply
We also accept Paypal for US orders
and now also international orders through our International Checkout.
![We take these credit cards](https://sep.turbifycdn.com/ca/I/853111_1783_1593278.jpg")
![](https://sep.turbifycdn.com/ca/I/853111_1606_231244.jpg")
We are proud to be
