PULS UB20.241 DC-UPS Control Unit
- Model: UB20.241
PULS UB20.241 FEATURES
- 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 the 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
PULS UB20.241 INTRODUCTION
The UB20.241 uninterruptible power supply controller
(DC-UPS) is used in addition to 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.
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 the 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.
The UB20.241 includes many battery diagnostic
functions that ensure the reliable operation of the entire
system. Furthermore, temperature-controlled charging
extends the life of the batteries. It also includes a
selectable buffer time limiter as well as ready, buffering, and replacing battery contacts. For safety and
maintenance, an inhibit input signal is included, which
prevents a battery backup.
As an Authorized Distributor of PULS, Manufacturers Automation Inc. (ManuAuto) offers a wide variety of Industrial Automation and Communication products across North America, including Canada (Ontario, Toronto) and the US. Buy PULS UB20.241 DC-UPS Control Unit online at a competitive price, with on-time delivery and fast shipping services. Our certified engineers are always available to support you.
You can also find the UB10.242, UB10.245 models in the PULS DC-UPS With Batteries Series.
PULS UB20.241 CERTIFICATIONS

| PULS DC-UPS : Electrical Specifications | |
| Nominal Input Voltage | nom. 24 VDC |
| Input Voltage Ranges | DC: 18 to 30 VDC |
| Input Current | typ. 80mA |
| Output Voltage | nom. 24 VDC |
| Output Current | Power supply mode: nom. 25A, in battery mode: nom. 20A |
| Output Power | nom. 480W |
| Buffer Time | 7Ah: 6min 45s, 12Ah: 16min 47s, 65Ah: 2h 49min, 140Ah: 6h 20min |
| Charging Time | For a 7Ah battery: 4h 40 mins, For a 12Ah battery: 8h |
| Power Losses | typ. 1.9W to typ. 21.3W |
| Efficiency | typ. 99% |
| PULS DC-UPS : Protection Features | |
| Overvoltage Protection | Yes: typ. 32 VDC, max. 35 VDC |
| Reverse Polarity Protection | Yes: Max. –40 VDC |
| Short Circuit Protection | Yes |
| Over-Temperature Protection | Yes |
| Battery Discharge Protection | Yes |
| PULS DC-UPS : Battery | |
| Battery Voltage | nom. 24 VDC |
| Battery Voltage Range | - |
| Battery Charging Current | typ. 1.5A |
| Battery Discharging Current | typ. 170mA |
| Battery Charging Time | For a 7Ah battery: 4h 40 mins, For a 12Ah battery: 8h |
| Allowed Battery Capacity | Yes: min. 3.9Ah, max. 10Ah |
| PULS DC-UPS : General | |
| MTBF | 649000 h |
| LED Indicators | 1 green LED |
| Relay Contacts | max. 60 VDC |
| Connection Method | Screw terminals |
| PULS DC-UPS : Physical Characteristics | |
| Operating Temperature | -40 to 70°C |
| Storage Temperature | -40 to 70°C |
| Relative Humidity Range | 5 to 95% r.H |
| Altitude Range | 0 to 6000m |
| Dimensions | 46 mm x 124 mm x 127 mm |
| Weight | 700 g |
| Mounting Type | DIN rail |
| Housing | - |
| Standards and Certifications | EAC, KC, WEEE, REACH, EU, VDMA 24364, ISA-71.04 G3, IEC 60068-2-60, Marine (ABS), Marine (DNV), Class I Div. 2, Class I Div 2, ATEX, UL 60950-1, IEC 60950-1, UL 508, IEC 60068-2-6, IEC 60068-2-27 |