QT20.481 Puls AC/DC Power Supplies


Part#:QT20.481
Manufacturer:Puls
Category:AC/DC Power Supplies
Product Lifecycle:Active
Product description
PULS QT20.481 is a power supply unit designed for AC/DC conversion with a 50% power reserve, suitable for DIN rail mounting. It operates within an ambient air temperature range of -25 to +70°C and features a design that includes a DC-OK relay contact output. The unit provides a rated current of 10A at 48Vdc and 8.7A at 55Vdc, with a power derating applicable from 12W at +60°C to +70°C. Connection is facilitated through spring-clamp connections. It supports a wide range supply voltage from 323Vac to 576Vac across various nominal voltages (380Vac / 400Vac / 415Vac / 440Vac / 480Vac / 500Vac / 525Vac) at 47-63Hz, indicating a 3-phase input capability with specific turn-ON and shutdown voltages. The QT20.481, part of the Q-series, measures 65mm in width, 124mm in height, and 127mm in depth, housed in aluminium for durability. It is designed for a 3-phase network, with a rated power of 480W at both 48Vdc and 55Vdc, and can momentarily support up to 720W for short durations (4s). The output voltage is adjustable between 48Vdc and 55Vdc. Protection features include output overvoltage protection and active input inrush current limiting, with capabilities for overload/short-circuit protection, series/parallel operation, and back-feeding load resistance. Efficiency rates are high, at 0.95 for a 3x480Vac input and 0.954 for a 3x400Vac input. The unit exhibits a peak current consumption of 10A at both 3x400Vac and 3x480Vac inputs, with specific start-up delay and rise times. Hold time is consistent at 22ms for both 3x480Vac and 3x400Vac inputs. Power dissipation varies with input voltage, and the unit's electrical durability is rated in hours across different conditions. Ripple is maintained at 100mVpp across a 20Hz to 20MHz range, with an output stage capacitance of 250µF.
Product Details
- UL File No. E198865
- Phase 3 Phase
- Height 124 mm
- Width 65 mm
- Depth 127 mm
- Current Output 10 A
- Current Input 0.79 A
- Power 480 W
- Efficiency 95.4 %
Product condition
New Factory Sealed
New Factory Sealed - New condition, never used, original OEM part with original packaging and factory seal.
The price of QT20.481 on Advantage Electric Supply is $780.00. Order now.
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UL File No.
Phase
Height
Width
Depth
Current Output
Current Input
Power
Efficiency
Selected product

QT20.481
Puls
PULS QT20.481 is a power supply unit designed for AC/DC conversion with a 50% power reserve, suitabl...
UL File No.E198865
Phase3 Phase
Height124 mm
Width65 mm
Depth127 mm
Current Output10 A
Current Input0.79 A
Power480 W
Efficiency95.4 %
About the manufacturer
Advantage Electric Supply is an authorized Puls distributor, proudly offering a comprehensive range of Puls products tailored to meet the needs of industrial power supply applications. Puls is a distinguished manufacturer specializing in innovative, high-performance DIN-rail power supplies designed to ensure reliability, efficiency, and long lifespan in challenging industrial environments. As your...
About the Product Category
AC/DC power supplies are power supplies that convert alternating current from the grid into direct current that is needed to power most electronics. AC/DC power supplies are integral components in systems that make the world go round.

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Purchase the QT20.481 from Advantage Electric Supply at the price of $780.00. Order today.
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PULS QT20.481 is a power supply unit designed for AC/DC conversion with a 50% power reserve, suitable for DIN rail mounting. It operates within an ambient air temperature range of -25 to +70°C and features a design that includes a DC-OK relay contact output. The unit provides a rated current of 10A at 48Vdc and 8.7A at 55Vdc, with a power derating applicable from 12W at +60°C to +70°C. Connection is facilitated through spring-clamp connections. It supports a wide range supply voltage from 323Vac to 576Vac across various nominal voltages (380Vac / 400Vac / 415Vac / 440Vac / 480Vac / 500Vac / 525Vac) at 47-63Hz, indicating a 3-phase input capability with specific turn-ON and shutdown voltages. The QT20.481, part of the Q-series, measures 65mm in width, 124mm in height, and 127mm in depth, housed in aluminium for durability. It is designed for a 3-phase network, with a rated power of 480W at both 48Vdc and 55Vdc, and can momentarily support up to 720W for short durations (4s). The output voltage is adjustable between 48Vdc and 55Vdc. Protection features include output overvoltage protection and active input inrush current limiting, with capabilities for overload/short-circuit protection, series/parallel operation, and back-feeding load resistance. Efficiency rates are high, at 0.95 for a 3x480Vac input and 0.954 for a 3x400Vac input. The unit exhibits a peak current consumption of 10A at both 3x400Vac and 3x480Vac inputs, with specific start-up delay and rise times. Hold time is consistent at 22ms for both 3x480Vac and 3x400Vac inputs. Power dissipation varies with input voltage, and the unit's electrical durability is rated in hours across different conditions. Ripple is maintained at 100mVpp across a 20Hz to 20MHz range, with an output stage capacitance of 250µF.
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