Bosch AL400UL-PD4R Specsheet
Fire Alarm Systems | AL400UL‑PD4R Fire Power Supply and Charger
AL400UL‑PD4R Fire Power Supply and
Charger
www.boschsecurity.com
u Four fuse-protected, Class 2 Rated, power‑limited
outputs
The Altronix AL400UL‑PD4R Fire Power Supply
converts a 115 V, 60 Hz input to either 4 A of
continuous supply current at 12 VDC or 3 A of
continuous supply current at 24 VDC. The supply
current is distributed through four fuse-protected,
Class 2 Rated, power‑limited outputs.
Certifications and approvals
Region Certification
USA UL ALVY: Access Control System Units (AN-
SI/UL 294), APHV: Power Supplies, Burglar Alarm System (ANSI/UL 603) ,and
UTRZ: Power-supply Units (UL 1481)
Installation/configuration notes
u 12 VDC or 24 VDC selectable output
u Outputs are filtered and electronically regulated
u Main power input fuse rated at 3.5 A, 250 V
u Short circuit and thermal overload protection
Mounting Considerations
Mount indoors in areas protected from rain or
moisture.
Wiring Considerations
Use 14 AWG (ISO 2.5 mm2) or larger wiring for all
power connections (battery, DC output, AC input). Use
22 AWG to 18 AWG (ISO 0.34 mm2 to 0.75 mm2)
wiring for power limited connections (AC fail, low
battery reporting).
Notice
Maintain a minimum of 0.25 inch (0.64 cm)
spacing between power limited wiring and wiring
that is not power limited (AC input, battery
wires).
Battery Considerations
The power supply accommodates up to two 12 VDC,
7 Ah standby batteries and automatically switches to
battery power if AC input power fails. When batteries
are not used, a loss of AC power results in a loss of
output voltage. When batteries are used, they must be
lead‑acid or gel type.
Parts included
Quant. Component
1 Power supply in red enclosure
2 | AL400UL‑PD4R Fire Power Supply and Charger
1 Hardware pack
1 Literature pack
Technical specifications
Mechanical Properties
Color: Red
Dimensions (H x W x D): 13 in. X 13.5 in. x x 3.25 in.
(33 cm x 34.3 cm x 8.3 cm)
Outputs
Battery Charging: Maximum charge rate is 0.7 A
Number: Four fused 12 VDC or 24 VDC selectable,
power‑limited
Ratings
Fuses: 3.5 A, 250 V
Power: 4 A at 12 VDC or 3 A at 24 VDC
Power Requirements
Current Draw (input): 1.45 A
Voltage (supply): 115 VAC, 60 Hz
Supervision
AC Fail: Form C contacts rated for 1 A at 30 VDC. Relay
normally energized when AC power is present.
Fail condition report sent approximately 1 min
after AC power loss.
Battery Presence: Form C contacts rated for 1 A at 30 VDC. Relay
normally energized when DC power is present.
Fail condition report sent approximately 3 min
after battery remains undetected.
Low Battery: Form C contacts rated for 1 A at 30 VDC. Relay
normally energized. Report sent when DC
power drops to 10.5 VDC for 12 VDC setting or
21 VDC for 24 VDC setting.
Trademarks
All hardware and software product names used in this
document are likely to be registered trademarks and
must be treated accordingly.
Ordering information
AL400UL‑PD4R Fire Power Supply and Charger
Converts a 115 V, 60 Hz input to either 4 A of
continuous supply current at 12 VDC or 3 A of
continuous supply current at 24 VDC
Order number AL400UL-PD4R
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