Polyamp PU300 SERIES DC/DC Converter
The Polyamp PU300 Series DC/DC Converter is a compact and reliable power solution for industrial, railway, and telecommunications applications. Delivering up to 300W of power, it is engineered to provide consistent performance in demanding environments. Key features include a wide input voltage range (10–300 V DC) and single output options from ...
Read MoreThe Polyamp PU300 Series DC/DC Converter is a compact and reliable power solution for industrial, railway, and telecommunications applications. Delivering up to 300W of power, it is engineered to provide consistent performance in demanding environments.
Key features include a wide input voltage range (10–300 V DC) and single output options from 12V to 60V DC, with efficiency exceeding 88%. The PU300 Series includes advanced functionalities such as reverse input voltage protection, overvoltage protection (OVP), and an adjustable output voltage for precise control. Its remote sensing capabilities and alarm relay for over/undervoltage conditions ensure seamless monitoring and operation.
Fully encapsulated to meet IP20 standards, the PU300 Series operates effectively within a temperature range of -25°C to +70°C (with derating). Flexible mounting options include wall, DIN rail, and 19” rack configurations, making it suitable for a variety of installations.
The Polyamp PU300 Series is an ideal choice for efficient, compact, and robust power conversion.
Show Less
Features
- 216W - 300W
- Industrial grade converter optimised input voltage ranges
- Input ranges from 10 to 270Vdc
- Single outputs from 12 to 60Vdc
- Reverse input voltage protection
- Fully encapsulated meets IP20
- Overvoltage Protection OVP
- Extra output with series diode
- Over/under voltage alarm with relay output
- Output voltage adjustable from front panel
- 19' Rack Mount or Wall Mount
Specifications
| INPUT | |
|---|---|
| Input voltages | A: 10-30Vdc B: 20-60Vdc C: 50-150Vdc D: 90-270Vdc |
| OUTPUT | |
|---|---|
| Output voltages | See Selection Table |
| Adjustment range | 95%–110%, Adjustment with 15 turn potentiometer |
| Output ripple | Typ 15mVp-p (80kHz) |
| Source regulation | 0.001 |
| Load regulation | 0.2% (0 - 100%) load |
| Temperature coefficient | 0.02% per °C |
| Current limit | 105% Rectangular |
| Remote sense | Yes |
| Transient recovery | <3ms. Load step to within 3% of nominal output voltage for 10% to 90% |
| Soft start | Yes |
| Startup time, type | 1 sec. |
| Holdup time | 2–25ms |
| Efficiency | 77%–88% |
| Design topology | Push-pull |
| Switching frequency | 40kH |
| PROTECTION | |
|---|---|
| Reverse input voltage protection | Parallel diode, Code (A) (B) (24) (48) Series diode, Code (C) (D) (110) (220) |
| Isolation | Input- Output: 2kVdc (input code A,B) Input- Output: 2.5kVac / 4kVdc (input code C,D) Input- Case: 2kVdc (input code A,B) Input- Case: 2.5kVac / 4kVdc (input code C,D) Output- Case: 2kVdc (all outputs) |
| ENVIRONMENTAL | |
|---|---|
| Operating temperature | Range at 100% load: -25°C to +55°C 100% load |
| Conduction cooling | width:260px; height:27px">With derating: -25°C to +70°C |
| Storage temperature range | -40°C to +85°C |
| FEATURES | |
|---|---|
| Overvoltage protection OVP | The output voltage is limited to 15% over nominal output voltage by a extra regulated circuit |
| Voltage Sense | External output voltage sense used when the voltage regulation at the load is critical. The sense can compensate voltage drops up to 5% of the nominal voltage |
| Remote sense | External sense is used when the voltage regulation at the loa is critical. The sense can compensate voltage drops up to 5% of nominal voltage |
| Extra Output with series diode | Use the series diode output when the output is connected in parallel with other power suppies to achieve redundancy |
| Voltage Alarm | Over / Under voltage alarm built in relay changes state if converter output voltage is not with 90% to 115% of nominal output. User selects NO or NC relay function. The relay is rated 30V 0.5A |
| OPTIONAL FEATURES | |
|---|---|
| Conformal coating | For environment with high non condensing humidity, max 98% RH |
| Inrush current | Inrush current limit with NTC, reduces the inrush current during start up. The input votlage range will be affected. Only available on C & D inputs. |
| Mounting Options | See Technical Illustrations |
| STANDARDS AND APPROVALS | |
|---|---|
| Safety standards | IEC950, EN60950, CE LVD 73/23/EEC |
| C-Tick | AS/NZS CISPR11 Group 1, Class A |
| EMC standards | EN/IEC 61000-6-2, EN/IEC 61000-4-2, EN/IEC 61000-4-3, EN/IEC 61000-4-4, EN/IEC 61000-4-5, EN/IEC 61000-4-6 |
| EMI standards | EN/IEC 61000-6-3 EN55011/EN55022 Level B |
| MECHANICAL | |
|---|---|
| Dimensions | 86 x 210 x 232mm, See Technical Illustration |
| Weight | 4.2kg |
| Mounting brackets | Supplied with L86-1 mounting bracket See Technical Illustration |
Selection Table
| MODEL NUMBER | INPUT | OUTPUT | CURRENT | OUTPUT POWER |
|---|---|---|---|---|
| PU300A12 | 10-30V | 12V | 18A | 216W |
| PU300A13.8 | 10-30V | 13.8V | 16A | 220W |
| PU300A15 | 10-30V | 15V | 16A | 240W |
| PU300A24 | 10-30V | 24V | 10A | 240W |
| PU300A28 | 10-30V | 28V | 8.58A | 240W |
| PU300A36 | 10-30V | 36V | 6.67A | 240W |
| PU300A48 | 10-30V | 48V | 5A | 240W |
| PU300A60 | 10-30V | 60V | 4A | 240W |
| PU300B12 | 20-60V | 12V | 25A | 300W |
| PU300B13.8 | 20-60V | 13.8V | 21.8A | 300W |
| PU300B15 | 20-60V | 15V | 20A | 300W |
| PU300B24 | 20-60V | 24V | 12.5A | 300W |
| PU300B28 | 20-60V | 28V | 10.8A | 300W |
| PU300B36 | 20-60V | 36V | 8.34A | 300W |
| PU300B48 | 20-60V | 48V | 6.25A | 300W |
| PU300B60 | 20-60V | 60V | 5A | 300W |
| PU300C12 | 50-150V | 12V | 25A | 300W |
| PU300C13.8 | 50-150V | 13.8V | 21.8A | 300W |
| PU300C15 | 50-150V | 15V | 20A | 300W |
| PU300C24 | 50-150V | 24V | 12.5A | 300W |
| PU300C28 | 50-150V | 28V | 10.8A | 300W |
| PU300C36 | 50-150V | 36V | 8.34A | 300W |
| PU300C48 | 50-150V | 48V | 6.25A | 300W |
| PU300C60 | 50-150V | 60V | 5A | 300W |
| PU300D12 | 90-270V | 12V | 25A | 300W |
| PU300D13.8 | 90-270V | 13.8V | 21.8A | 300W |
| PU300D15 | 90-270V | 15V | 20A | 300W |
| PU300D24 | 90-270V | 24V | 12.5A | 300W |
| PU300D28 | 90-270V | 28V | 10.8A | 300W |
| PU300D36 | 90-270V | 36V | 8.34A | 300W |
| PU300D48 | 90-270V | 48V | 6.25A | 300W |
| PU300D60 | 90-270V | 60V | 5A | 300W |
Technical Drawings
Warranty & Returns
Warranty periods vary by product. Please refer to the Powerbox Warranty Policy for the applicable coverage period against manufacturing defects from date of purchase. For returns and RMA requests, please visit our RMA support page or contact our support team directly.