UB20.2410 pages

UB20.241
24V, 20A, DC-UPS

UB-Series

DC-UPS CONTROL UNIT
No Change in Output Voltage in Battery Mode
Selectable Output Voltages in Battery Mode
1-Battery-Concept
Each 12V Battery is Charged and Monitored Separately
for Longest Battery Life
Precise Battery Charging by Using a Temperature Sensor
Battery Size Selector for Small or Large Batteries
50% BonusPower®, 30A for up to 4s
High Breaking Capacity for Branch Protectors
Smart Battery Diagnostics and Monitoring Functions
3 Year Warranty

GENERAL DESCRIPTION

SHORT-FORM DATA

The UB20.241 uninterruptible power supply controller
(DC-UPS) is used in addition with a 24V power supply
and batteries to bridge power failures or voltage
fluctuations. This configuration can prevent expensive
downtimes, long restart cycles and loss of data.

Input voltage
Output voltage

A unique feature of the UB20 series is the constant
voltage in battery mode, which will not change as the
batteries discharge. The buffer voltage in battery mode
can be set to four different output values. Another
feature is the utilization of two independent battery
chargers for the two 12V-batteries in series. This feature
makes matching batteries unnecessary and allows for
precise battery charging, testing and optimized usage
of the battery capacity to achieve the longest battery
service life.

Output current

The UB20.241 includes many battery diagnostic
functions that ensure a reliable operation of the entire
system. Furthermore, a temperature controlled charging
extends the life of the batteries. It also includes a
selectable buffer time limiter as well as ready, buffering
and replace battery contacts. For safety and
maintenance, an inhibit input signal is included which
prevents a battery backup.

ORDER NUMBERS

DC 24V -±25%
same as input
voltage
22.5V, 24V, 25V,
26V (selectable)
25A continuous
30A for 4s
20A continuous
30A for 4s
3.9 – 150Ah

18-30Vdc
in power supply
mode
in battery mode

in power supply
mode
in battery mode
at 22.5V
2 batteries in
series, each 12V
6min 45s
at 20A, 7Ah
16min 47s
at 20A, 12Ah
2h 49min
at 20A, 65Ah
6h 20min
at 20A, 140Ah
-40°C to +70°C
operational
0.5A/°C
+60°C to +70°C
46x 124x 127mm W x H x D
700g / 1.54lb

Allowed battery
sizes
Buffer time

Temperature range
Derating
Dimensions
Weight

MARKINGS

DC-UPS

UB20.241

Standard DC-UPS unit

Accessory

UZK24.071
UZO24.071
UZK24.121
UZO24.121
UZS24.100
ZM2.WALL
ZM12.SIDE

Battery module 24V, 7Ah
UZK24.071 without batteries
Battery module 24V, 12Ah
UZK24.121 without batteries
Sensor & center tap board
Panel/ wall-mount bracket
Side-mount bracket

IND. CONT. EQ.

UL 60950-1

UL 508

IECEx
Class I Div 2
planned

EMC, LVD, RoHS,

ATEX

II 3G Ex nA nC II T4 Gc
planned

Marine, planned

Jan. 2015 / Rev. 2.0 DS-UB20.241-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0

Germany

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