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QUINT-PS/2AC/1DC/24DC/20 DIN Rail Power Supply (DC to DC Converter for Frequency or Power Inverter)

47791 1000 int 04 lg 10
  • 24V DC Output Voltage
  • 20 Amps Output
  • 480 Watts Output
  • Dual-phase AC or DC Input
  • Input Voltage Range: 360 to 575 V AC or 450 to 840 V DC

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Quint Diagram

The QUINT POWER power supply is specifically designed for connection to high input voltages such as frequency converters. It can be simultaneously connected to the AC voltage and the DC intermediate circuit voltage of a converter. In the event of mains failure, the energy of the DC intermediate circuit continues to supply all connected 24 V loads without interruption. With all required safety certifications to support ITE (Information Technology Equipment), ruggedized packaging, extended operating temperatures, high peak load capabilities and high isolation voltages, the QUINT Industrial Power Supply is designed to meet the needs of your industrial application. The QUINT-PS/2AC/1DC/24DC/20 uses leading technologies to increase safety and reliability:

  • Preventive function monitoring warns against critical operating states before errors occur.
  • The static power reserve enables difficult loads to be started reliably with up to 1.25 times the nominal current (POWER BOOST).
  • Fast tripping of standard circuit breakers with up to six times the nominal current for 12 ms (SFB technology).

18 to 29.5 V DC Adjustable Output Voltage Range

Using the rotary potentiometer on the front face of the QUINT power supply, the output voltage can be optimally adjusted to meet specific application environment requirements. For example, you can easily adjust to compensate for a voltage drop caused by a long cable length.

POWER BOOST: reliably start difficult loads

Power Boots Diagram

A high degree of flexibility is required to configure, optimize and expand large systems. To optimally adapt a system or machine to your requirements, a power reserve in the power supply unit is crucial. With the QUINT Power Boost function a static boost will continuously provide up to 125% of the nominal current. This is useful when it is not possible to predict which loads will be switched on at the same time or high switch-on currents of capacitive loads have to be absorbed without voltage dips.

Preventive function monitoring reports critical operating states before they occur

Power Boots Diagram

With a QUINT Industrial Power Supply, the output voltage and output current are constantly monitored. Preventive function monitoring visualizes critical operating states and indicates them locally and remotely to the controller as follows:

  • Via LED
  • Via floating relay contact
  • Via active switching output

Industrial operating temperature of -25°C to +70°C

Equipment found in traffic management, oil and gas pipelines, weather tracking, industrial and outdoor applications must function in temperatures that cannot be supported by a commercial power supplies. With an operating temperature of -25°C to +70°C the QUINT Industrial Power Supply is ideal for use with equipment subjected to harsh environments and severe temperatures.

High efficiency and low no load power consumption

Compared with other products on the market, the QUINT Industrial Power Supply provides excellent energy savings. With a very low no load power consumption and high efficiency at nominal load, just a small amount of electrical energy is converted into undesired heat energy making these very ECO friendly power supplies.

SFB (Selective Fuse Breaking) Technology

QUINT Industrial Power Supply Diagram

SFB Technology can be used to quickly and reliably trip miniature circuit breakers and fuses connected on the secondary side. In the event of a short circuit on the secondary side, the QUINT supplies up to 6 times the nominal current for 12 ms. Faulty current paths are switched off selectively, the fault is located, and important system parts remain in operation. Loads that are connected in parallel are still supplied with energy ensuring continued operation of these system parts.

  • Tripping circuit breakers: The circuit breaker is typically tripped by the high SFB current within 3 to 5 ms. As a result, any voltage dips for loads connected in parallel are avoided.
  • Tripping a fuse: Fuses are tripped by melting the predetermined breaking point inside the fuse capsule. The tripping characteristic of the fuse is described by the melting integral (I²t). A high current is crucial in order to achieve a very short tripping time.

Ideal application environments for a QUINT DIN Rail Power Supply

  • Machine building
  • Automated production process
  • Industrial control, automation, assembly, and test equipment
  • Building control, security and surveillance, and climate control systems.
  • Power countless industrial automation devices such as sensors, controllers and valves

Other reasons to choose a QUINT Industrial DC to DC Converter

  • Compact buffer solution
  • Voltage Isolation input/output: 1.5 kV AC
  • Protections: Short-circuit, Overload, Over voltage, Over-temperature

Hardware Specs

Environmental Product Compliance
REACH SVHC Lead 7439-92-1
Net weight 2 kg
Efficiency > 92 % (600 V DC)
> 90.5 % (400 V AC)
Insulation voltage input/output 1.5 kV AC (type test)
2 kV AC (routine test)
Insulation voltage input / PE 4 kV AC (type test)
1.5 kV AC (routine test)
Insulation voltage output / PE 500 V DC (routine test)
Protection class I
Degree of protection IP20
MTBF (IEC 61709, SN 29500)
> 860000 h (40 °C)
Mounting position horizontal DIN rail NS 35, EN 60715
Assembly instructions alignable: PN ≥50%, 5 mm horizontally, 15 mm next to active components, 50 mm vertically
alignable: PN <50%, 0 mm horizontally, 40 mm vertically top, 20 mm vertically bottom
Standards and Regulations
Electromagnetic compatibility Conformance with EMC Directive 2014/30/EU
Connection in acc. with standard CUL
Standard – Safety of transformers EN 61558-2-17
Standard – Electrical safety EN 60950-1/VDE 0805 (SELV)
EN 61558-2-17
Standard – Electronic equipment for use in electrical power installations and their assembly into electrical power installations EN 50178/VDE 0160 (PELV)
Standard – Safe isolation DIN VDE 0100-410
UL approvals UL/C-UL listed UL 508
UL/C-UL Recognized UL 60950-1
Shock 18 ms, 30g, in each space direction (according to IEC 60068-2-27)
Vibration (operation) < 15 Hz, amplitude ±2.5 mm (according to IEC 60068-2-6)
15 Hz … 150 Hz, 2.3g, 90 min.
Rail applications EN 50121-4
Connection data, input
Connection method Screw connection
Conductor cross section solid min. 0.2 mm²
Conductor cross section solid max. 6 mm²
Conductor cross section flexible min. 0.2 mm²
Conductor cross section flexible max. 4 mm²
Conductor cross section AWG min. 24
Conductor cross section AWG max. 10
Stripping length 8 mm
Screw thread M3
Output data
Nominal output voltage 24 V DC ±1 %
Setting range of the output voltage (USet) 18 V DC … 29.5 V DC (UIN ≥ 360 V AC / 480 V DC)
18 V DC … 26 V DC (< 480 V DC)
Nominal output current (IN) 20 A (-25 °C … 60 °C)
POWER BOOST (IBoost) 26 A (-25°C … 40°C permanent, UOUT = 24 V DC )
Selective Fuse Breaking (ISFB) 120 A (20 ms)
Derating 60 °C … 70 °C (2.5%/K)
Connection in parallel Yes, for redundancy and increased capacity
Connection in series yes
Feedback resistance < 35 V DC
Protection against surge voltage on the output Yes, limited to approx. 35 V DC
Max. capacitive load Unlimited
Active current limitation Approx. 27 A
Control deviation < 1 % (change in load, static 10 % … 90 %)
< 2 % (change in load, dynamic 10 % … 90 %)
< 0.1 % (change in input voltage ±10 %)
Residual ripple < 50 mVPP (with nominal values)
Output power 480 W
Peak switching voltages nominal load < 50 mVPP (20 MHz)
Maximum power dissipation in no-load condition 11 W
Power loss nominal load max. 51 W
Connection data for signaling
Conductor cross section solid min. 0.2 mm²
Conductor cross section solid max. 6 mm²
Conductor cross section flexible min. 0.2 mm²
Conductor cross section flexible max. 4 mm²
Conductor cross section AWG min. 24
Conductor cross section AWG max. 10
Screw thread M3
Width 120 mm
Height 130 mm
Depth 125 mm
Weight per piece 2000.0 GRM
Utilization restriction EMC: class A product, see manufacturer’s declaration in the download area
Input data
Nominal input voltage range 2x 400 V AC … 500 V AC
600 V DC
Input voltage range 2x 360 V AC … 575 V AC
450 V DC … 840 V DC
AC frequency range 45 Hz … 65 Hz
Frequency range DC 0 Hz
Current consumption 2.5 A (400 V AC)
2.1 A (500 V AC)
Nominal power consumption 888 VA
Inrush surge current < 85 A (typical)
Mains buffering typ. 20 ms (400 V AC)
Input fuse 3.15 A (slow-blow, internal)
Choice of suitable circuit breakers 10 A … 16 A (Characteristic B, C)
Type of protection Transient surge protection
Protective circuit/component Varistor
Connection data, onput
Connection method Screw connection
Conductor cross section solid min. 0.2 mm²
Conductor cross section solid max. 6 mm²
Conductor cross section flexible min. 0.2 mm²
Conductor cross section flexible max. 4 mm²
Conductor cross section AWG min. 12
Conductor cross section AWG max. 10
Stripping length 8 mm
Screw thread M3
Ambient conditions
Degree of protection IP20
Ambient temperature (operation) -25 °C … 70 °C (> 60 °C Derating: 2.5 %/K)
Ambient temperature (storage/transport) -40 °C … 85 °C
Max. permissible relative humidity (operation) ≤ 95 % (at 25 °C, non-condensing)
Climatic class 3K3 (in acc. with EN 60721)
Degree of pollution 2
Installation height ≤ 2000 m
  • cULus Listed
  • cULus Recognized
  • EAC
  • UL Recognized
  • cUL Recognized
  • cUL Listed
  • UL Listed


Block diagram
Block diagram

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