Power Supply 48V DC ATX 1200W (36-72VDC)
The STC-481200 is an industrial DC-DC power supply in PS/2 ATX format with 1200 W continuous output. It operates from a nominal ±48 V DC input across a ±36 V to ±72 V DC range and includes forced-air cooling, input-to-output isolation and electrical protection for high-power industrial computer systems.
Model: STC-481200
Output Power: 1200W continuous
Input Voltage - ±48V
DC Input Range - ±36V ~ ±72V DC
ENVIRONMENTAL CONDITIONS:
● Cooling: forced air cooling, 80x80x25 mm fan x 2 PCs
● Fan type: DC type, 2 x ball bearings, 6200 r.p.m., optional fan control card
● Fan noise level: 70dBA @ full load
● Fan brand: SUNON, DELTA, ADDA, NMB. Specifications are equivalent
● Operating temperature: 0°C ~ +50°C (-20°C~+60°C, optional H version), at full load
● Output power: 100% @ 50°C
● Output power: 70% @ 60°C
● Output power: 50% @ 70°C
● Operating humidity: 20%~85% RH. (Non-condensing) (95% RH optional)
● Storage temperature: -20°C~+80°C
● Storage humidity: 10%~90% RH. (Non-condensing)
● Operating altitude: 10M below sea level and 3000M above sea level
DC INPUT CHARACTERISTICS:
● Input connector type: 220A, 1.0mm thickness/ 1port for positive terminal/ 1port for negative terminal
● Input Current: 19A/38A(1200W) @Full Load, High Line & Low Line
● Inrush Current: Less than 90A, cold start @25°C ambient
DC OUTPUT CHARACTERISTICS:
| Output Voltage | Regulation | Output Current | Ripple & Noise | |||
| Load | Line | Cross | 1200W | |||
| Min | Max | |||||
| +5V | ±1% | ±1% | ±5% | 0A | 35A | 50mV |
| +12V | 0A | 92A | 120mV | |||
| +3.3V | 0A | 35A | 50mV | |||
| -12V | ±8% | 0A | 1.0A | 120mV | ||
| -5V (optional) | Optional | Optional | 50mV | |||
| +5VSB | ±5% | 0A | 4A | 50mV | ||
| Maximum continuous combined load on +3.3 V & +5V DC output shall not exceed | | Watts | ||||
| Maximum continuous total DC output power shall not exceed | 1200 | |||||
OVERALL PERFORMANCE:
● Efficiency: 75% typical @48V DC, full load
● Rise Time
● Power Good Signal: TTL-compatible signal, on delay 100~500ms, off delay 1ms min
● Short Circuit Protection (SCP): All outputs equipped with SCP (shutdown and latch-off)
● Over Power Protection (OPP): Peak power protected to 130%±10% of continuous rated power (shutdown and latch-off)
● Over Voltage Protection (OVP): +3.3V@4.5V, +5V@6V, +12V@15.6V
RELIABILITY:
● MTBF (Mean Time Between Failures): >90,000 hours @max. load, 48V DC & 25°C ambient
● Safety Standards: Meets IEC60950-1, EN60950-1
● Safety Approvals:
● EMI Compatibility (EMC) Standard: EN55032:2015/AC:2016, CISPR32:2015, EN61000-3-2:2014,
EN61000-3-3:2013, EN55024:2010 +A1:2015
ISOLATION:
● INPUT and OUTPUT are isolated by transformers and optical couplers
● Dielectric Withstand: INPUT to OUTPUT: 1000V DC for 60 seconds
● Dielectric Withstand: INPUT to frame GROUND: 1000V DC for 60 seconds
● Leakage Current: <0.005μA @ 48V DC
Output Connector Specifications:
● ATX 24 Pin x1: Molex29-01-2240 or equivalent
● +12V(P4) 4 pin x1: Molex 39-01-2040 or equivalent
● HDD, DVD 4 pin x2: Molex 8981-04P or equivalent
● FDD 4 pin x2: AMP171822-4 or equivalent
● Serial ATA x8: Molex 675820000 or equivalent
● Processor EPS 8 Pins x 1: Molex 39-01-2080 or equivalent
● PCIe x 4
Standard output cable length:
● 610 mm / 24 inches
PCB specifications:
● 4 layers
● Copper: 3 Oz
● Thickness: 1.6mm
● Material: FR4
● PCB material origin: Taiwan
Power chassis dimensions:
● 270(L) x 150(W) x 86(H) mm / 10.63(L) x 5.9(W) x 3.39(H) inches
Net weight:
● 4.7 kg / 10.36 lbs
Gross weight:
● 5.3 kg / 11.68 lbs
Packing details
● 2 PCs / carton
● N.W. 10.8 kg / 23.8 lbs
● G.W. 11.8 kg / 26.0 lbs
Carton dimensions
● 0.045 m3 / 1.58 Cu.Ft