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One of the most important advantages of the power supply is the integrated battery management system. The user has the ability to manually select the charging current (2A, 4A, or 8A) using jumpers, which allows for optimal adjustment to the capacity of the connected lead-acid battery. The power supply takes care of the cell's condition by offering charging and maintenance functions as well as protection against excessive discharge (UVP), which significantly extends battery life.
System safety is guaranteed by a series of built-in electronic protections: short-circuit (SCP), overload (OLP), overvoltage (OVP), and surge protection. A set of battery cables is included, which facilitates installation. Please note that for 24h continuous operation, the load should not exceed 80% of the maximum current. The robust, metal modular design facilitates mounting in cabinets or enclosures, ensuring a professional look and durability of the UPS emergency power installation.
EAN: 6931240085530 SKU: 931085535
The Pulsar PSB-12V20A buffer power supply is an advanced switching device designed for uninterruptible power supply for security systems, such as alarm control panels, CCTV cameras, access control systems, or intercoms. Thanks to its high current capacity of 20A, this product is ideal for extensive installations requiring a stable 13.8V DC voltage. The device is characterized by high efficiency at the 86% level, which minimizes energy losses and reduces component heating.
One of the most important advantages of the power supply is the integrated battery management system. The user has the ability to manually select the charging current (2A, 4A, or 8A) using jumpers, which allows for optimal adjustment to the capacity of the connected lead-acid battery. The power supply takes care of the cell's condition by offering charging and maintenance functions as well as protection against excessive discharge (UVP), which significantly extends battery life.
System safety is guaranteed by a series of built-in electronic protections: short-circuit (SCP), overload (OLP), overvoltage (OVP), and surge protection. A set of battery cables is included, which facilitates installation. Please note that for 24h continuous operation, the load should not exceed 80% of the maximum current. The robust, metal modular design facilitates mounting in cabinets or enclosures, ensuring a professional look and durability of the UPS emergency power installation.
Power supply type
Switching with high efficiency
Supply voltage
200 V ... 240 V AC, 50/60 Hz
Output voltage (buffer operation)
11 V ... 13.8 V DC
Output voltage (battery operation)
9.5 V ... 13.8 V DC
Output voltage regulation
13.5 V ... 14.4 V DC (via V-ADJ potentiometer)
Power supply current capacity
20 A (total current of receivers and charging)
Battery charging current
2 A / 4 A / 8 A (set by CHARGE jumper on the board)
Power supply power
276 W (maximum continuous power)
Efficiency
86 %
Number of outputs
3 pcs. on screw terminals
Protections
Short-circuit (SCP), Overload (OLP), Surge, Overvoltage (OVP), Excessive discharge (UVP - cutoff at ~9.5V)
Operating conditions
Temperature: -10 °C ... 40 °C, Relative humidity: 20 % ... 90 % (non-condensing)
Signaling and control
Optical AC/DC status signaling. Firmware: No digital interface; control is realized by analog logic circuits managing the battery charging cycle (CC/CV), monitoring voltage thresholds for UVP protection, and controlling output voltage stabilization in real-time. Parameter configuration is done mechanically via jumpers and a potentiometer.
Construction
Modular design for installation, free air convection cooling (mounting distance must be ensured)
Contents
1x PSB-12V20A buffer power supply
1x Set of cables for battery connection
1x Installation and operation manual
Dimensions, Weight
Product dimensions: 237 x 168 x 54 mm (D x W x H)
Package dimensions: 245 x 175 x 70 mm (D x W x H)
Product weight: 1190 g
Weight with packaging: 1282 g
Specific References