Planet - PWR-120-48 - 48V, 120W Din-Rail Power Supply (NDR-120-48, adjustable 48-56V DC Output)
Product Overview
The Planet PWR-120-48 (NDR-120-48 series) is a 120W industrial DIN-rail power supply with a typical efficiency of 89%. It features an adjustable 48–55V DC output, supports universal inputs (90–264V AC / 127–370V DC), and includes short circuit, overload, overvoltage, and overtemperature protections.
Key Configuration
- • Output: 48V DC (adjustable 48-55V), rated current 2.5A, rated power 120W
- • Input: 90-264V AC (47-63Hz) or 127-370V DC, AC current 2.25A @115V / 1.3A @230V
- • Efficiency: 89% typical
- • Ripple & noise: 150mVp-p max
- • Voltage tolerance: ±1.0%; line regulation: ±0.5%; load regulation: ±1.0%
- • Dimensions: 40 × 125.2 × 113.5 mm (W×H×D); weight: 0.6 kg
Key Features
This fanless power supply mounts to standard TS-35 DIN rails, utilizes free-air convection cooling, and boasts a 456,300-hour MTBF with 2G vibration resistance. It features full-load setup/rise times up to 2500ms/60ms and a 16ms hold-up time. Safety and isolation are certified via UL508 and TUV EN60950-1, supporting a 3KVAC withstand voltage and >100M Ohms isolation. It meets Class B EMC emissions and heavy industrial Level Criteria A immunity.
Technical Context
Designed for industrial environments, this compact 40mm wide power supply is optimized for industrial control panels, solar-powered installations, and DC backup systems. Its adjustable range is tailored specifically to meet standard PoE voltage requirements (48–57V) to reliably power network devices, industrial Ethernet equipment, and IP cameras near high electrical noise sources like motors and drives.
Installation Notes
This 0.6 kg (1.32 lb) DIN-rail unit measures 40 × 125.2 × 113.5 mm and features a 48–55V output tuning potentiometer with dual AC/DC input terminals. It operates from -20°C to +70°C (subject to a thermal derating curve) under 20–95% non-condensing humidity, and stores safely down to -40°C. Protection includes auto-recovering overload safety (105–130%) and a latching overvoltage shutdown (56–65V) requiring a manual power reset. Boasting a 456,300-hour MTBF, the design is certified to UL508, TUV EN60950-1, and EN60204-1 safety standards.
| Output | |
| Dc voltage | 48v |
| Rated current | 2.5a |
| Current range | 0 ~ 2.5a |
| Rated power | 120w |
| Ripple & noise (max.) | 150mvp-p |
| Voltage adj. range | 48 ~ 55v |
| Voltage tolerance | ±1.0% |
| Line regulation | ±0.5% |
| Load regulation | ±1.0% |
| Setup, rise time | 1200ms, 60ms/230vac 2500ms, 60ms/115vac at full load |
| Hold up time (typ.) | 16ms/230vac 10ms/115vac at full load |
| Input | |
| Voltage range | 90 ~ 264vac 127 ~ 370vdc |
| Frequency range | 47 ~ 63hz |
| Efficiency (typ.) | 89% |
| AC- (typ.) | 2.25a/115vac 1.3a/230vac |
| Inrush current (typ.) | 20a/115vac 35a/230vac |
| Leakage current | <1ma / 240vac |
| Protection | |
| Overload | 105 ~ 130% rated output power. Protection type: constant current limiting, recovers automatically after the fault condition is removed |
| Over voltage | 56 ~ 65v. Protection type: shut down o/p voltage, re-power on to recover |
| Over temperature | Shut down o/p voltage, re-power on to recover |
| Environment | |
| Working temp. | -20 ~ +70°c (refer to derating curve) |
| Working humidity | 20 ~ 95% rh non-condensing |
| Storage temp., humidity | -40 ~ +85°c, 10 ~ 95% rh |
| Temp. coefficient | ±0.03%/°c (0 ~ 50°c) |
| Vibration | Component: 10 ~ 500hz, 2g 10min./1cycle, 60min. each along x, y, z axes; mounting: compliance to iec60068-2-6 |
| Safety & Emc | |
| Safety standards | Ul508, tuv en60950-1 approved (meet en60204-1) |
| Withstand voltage | I/p-o/p: 3kvac, i/p-fg: 2kvac, o/p-fg: 0.5kvac |
| Isolation resistance | I/p-o/p, i/p-fg, o/p-fg: >100m ohms / 500vdc / 25°c / 70% rh |
| Emc emission | Compliance with en55022 (cispr22), en61204-3 class B, en61000-3-2,-3 |
| Emc immunity | Compliance with en61000-4-2,3,4,5,6,8,11, en55024, en61000-6-2 (en50082-2), en61204-3, heavy industry level, criteria a |
| Others | |
| Mtbf | 456.3k hrs min. mil-hdbk-217f (25°c) |
| Dimension | 40 * 125.2 * 113.5mm (w * h * d) |
| Packing | 0.6kg; 20pcs/13kg/1.16cuft |
