Data sheet
DA449
12V DC 8A or 24V DC 4A Power supply
Within a mild steel enclosure
A power supply with either 1 x 8A 12V DC (13.7V) or 1 x 4A 24V DC (27.4V) output. The output voltage is changed
by means of a simple selector plug. This unit can also house and charge one or two VRLA batteries up to 7Ah
capacity and can signal a mains failure with relay contacts.
This unit also has a completely independent SPCO relay that can be driven from a 12V or 24V DC supply
regardless of PCB selector position (e.g. if PCB is in 24V mode, this relay can still be used in 12V mode or not at
all). A typical use for this relay would be for interfacing with a fire panel to de-power items such as magnetic locks
in the event of an emergency.
Output selected as 12V
Voltage
12V DC (13.7V)
Current
1 x 8A
Connection type
PCB terminal block (2.5mm²)
Fused
20 x 5mm 8A quick blow glass fuse
Output selected as 24V
Voltage
24V DC (27.4V)
Current
1 x 4A
Connection type
PCB terminal block (2.5mm²)
Fused
20 x 5mm 4A quick blow glass fuse
Mains fail signalling contacts
Contact configuration
Single pole change over (Approximately 30 second delay)
Voltage
Maximum 30V DC
Current
Maximum 1A
Connection type
PCB terminal block (2.5mm²)
Undedicated relay contacts
Contact configuration
Single pole change over
Voltage - Coil
12V or 24V DC (separate terminals)
Voltage - Switching
Maximum 30V AC/DC
Current - Switching
Maximum 5A
Note: This is only valid when quenching diode fitted for
inductive loads, e.g. magnetic locks and releases
Connection type
PCB terminal block (2.5mm²)
Input
Voltage
230V AC @ 50Hz (+/- 10%)
Power consumption
< 90VA
Connection type
10mm² internal terminal block (3 x 1.5mm² or 2 x 2.5mm²)
Fused
3A Mains fuse (BS1362)
Mains on indication
LED indication
Environmental
Operating temperature
-10°C to +40°C
Storage temperature
-20°C to +50°C
Operating relative humidity
Maximum 95% non-condensing
The enclosed information is believed to be correct. Information may change ‘without notice’ due to product improvement. Users should ensure
that the product is suitable for their use. E&OE. Registered Proprietor: Benham (General Engineers) Ltd (No. 1181752) Registered at 3 Galliford
Road Industrial Estate, Heybridge, Maldon, Essex CM9 4XD, UK. Directors: R.A.Scott, K.E.Horwood, T.J.Scott, N.J.Scott. VAT Reg. GB
28276273 Tel:+44(0)1621 856 850 Fax:+44(0)1621 856 162 sales@dantech.uk.com
Page 1 - 2
Revision EN_14-11-12-12-38-32
Data sheet
DA449
12V DC 8A or 24V DC 4A Power supply
Within a mild steel enclosure
Dimensions**
Width
320mm
Height
255mm
Depth
90mm
Weight
< 4.85Kg
Enclosure material
Mild steel
Finish
Powder coated RAL9016 (white)
Other
Estimated operations before failure (MTBF)
50,000 hours
CE Approved
Yes
Lid tamper switch
Yes
Recommended battery size
(1 or 2) 7Ah VRLA
*(+/- 2mm)
The enclosed information is believed to be correct. Information may change ‘without notice’ due to product improvement. Users should ensure
that the product is suitable for their use. E&OE. Registered Proprietor: Benham (General Engineers) Ltd (No. 1181752) Registered at 3 Galliford
Road Industrial Estate, Heybridge, Maldon, Essex CM9 4XD, UK. Directors: R.A.Scott, K.E.Horwood, T.J.Scott, N.J.Scott. VAT Reg. GB
28276273 Tel:+44(0)1621 856 850 Fax:+44(0)1621 856 162 sales@dantech.uk.com
Page 2 - 2
Revision EN_14-11-12-12-38-32