Name: MEAN WELL NSP-320 series: PFC enclosed power supply - NSP-320-48
Brand: MEAN WELL
SKU: NSP-320-48
Price: 122.23 USD
Availability: InStock

MEAN WELL NSP-320 series: PFC enclosed power supply - NSP-320-48

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Description

NSP-320-48 — PFC enclosed power supply

MEAN WELL NSP-320-48 is an enclosed AC/DC power supply with active PFC, 48 V DC output, 6.7 A rated current and 321.6 W rated output. It accepts 85–305 V AC or 120–431 V DC, subject to derating. It uses a temperature-controlled DC fan.

Download MEAN WELL NSP-320 Datasheet (PDF)
Download MEAN WELL Enclosed Power Supply Installation Manual (PDF)
Download MEAN WELL EMI Testing Guidance (PDF)

NSP-320 reference: PDF page(s) 27–34.

Electrical specifications

Model and output	NSP-320-48; single output 48 V DC, current range 0–6.7 A; rated power 321.6 W.
Input voltage and frequency	85–305 V AC or 120–431 V DC; 47–63 Hz. 277 V AC operation is supported within the stated limits.
Efficiency	93.5% typical.
Series capability reference	The NSP-320 series offers efficiency up to 93.5% and peak power up to 200% on the documented peak-capable models. Use the selected model’s current, power, voltage and thermal limits below; these series maxima are not unconditional individual ratings.
Voltage adjustment	44–57 V.
Ripple and noise	240 mV p-p maximum; measured with 20 MHz bandwidth using a 12-inch twisted pair terminated by 0.1 µF and 47 µF capacitors in parallel.
Voltage tolerance	±1.0%; includes setup tolerance, line regulation and load regulation.
Line regulation	±0.5%.
Load regulation	±0.5%.
Power factor	>0.98 / >0.93 / >0.9 typical at 115 / 230 / 277 V AC respectively, full load.
AC input current	3.2 / 1.6 / 1.4 A typical at 115 / 230 / 277 V AC respectively.
Inrush current	20 / 40 / 50 A typical, cold start at 115 / 230 / 277 V AC respectively.
No-load consumption	With remote OFF: 0.3 / 0.5 / 0.5 W typical at 115 / 230 / 277 V AC respectively. With remote ON: 3 W typical.
Setup and rise time	1500 / 80 ms at 115 V AC; 1000 / 80 ms at 230 V AC; 1000 / 80 ms at 277 V AC. Setup is measured at first cold start; repeated ON/OFF operation may increase setup time.
Hold-up time	16 ms typical at full load.
Switching frequency	Block diagram: PFC 65 kHz; PWM 80 kHz.
General measurement conditions	Unless specially stated, parameters are measured at 230 V AC input, rated load and 25°C ambient.

Peak operation and protection

Peak output	13.4 A; 640 W, each stated for 5 seconds in the model table. Observe the peak-power function, input and temperature limits together.
Peak-power duty and average load	With peak power Ppk, non-peak power Pnpk, pulse duration t and period T: Pav = [Ppk × t + Pnpk × (T − t)] / T ≤ rated output power; t ≤ 5 seconds; duty = t/T × 100% ≤ 35%. The plotted duty limits below may be lower.
Peak-power input dependence	The 200 V AC graph allows 35% duty through 150% peak power, falling to 10% at 176% and 5% at 200%. The 100 V AC graph falls from 35% at 110% peak power to 10% at 133% and 5% at 150%. Do not use a higher peak level outside its plotted input and temperature conditions.
Peak power at upper voltage adjustment	When output voltage is adjusted to its upper limit, peak power is limited to 150% of rated power.
Short-circuit protection	Constant-current limiting for more than 5 seconds with output voltage below 30% of rating, then output shutdown; cycle power to recover.
Overload protection	105–200% of rated output power: normal output for more than 5 seconds, then constant-current limiting. Above 200%, constant-current limiting. While output remains above 30% of rating, the unit does not shut down and recovers automatically after the fault is removed; below 30%, the output shuts down and requires re-powering.
Overvoltage protection	58–70 V; output shutdown; cycle power to recover.
Overtemperature protection	Output shutdown; cycle power to recover.

Control and interface functions

CN1 function pins	1 DC OK−, 2 DC OK+, 3 RS−, 4 RS+, 5 RC−, 6 RC+.
Remote ON/OFF	Across RC+ and RC−: open circuit or 0–0.8 V DC turns output ON; an external 3.3–10 V DC source turns output OFF. Input current is 10 mA maximum. The diagram shows 1 kΩ in the input path.
Remote sensing	Compensates up to 0.3 V of load-wiring drop. Connect RS+ to the load positive terminal and RS− to the load negative terminal; twist the sense wires together to reduce noise.
DC OK signal	Phototransistor output: maximum 15 V DC / 10 mA resistive load. Power ON: conducting/low; power OFF: open/high. Use the DC OK+ and DC OK− pins specified for this series. The DC OK diagram includes an internal Rint = 100 Ω resistor; this value is not an external resistor requirement.

Environment and thermal limits

Operating environment	−40 to +85°C, with both input-voltage and temperature derating; 20–90% RH, non-condensing. The curve limits determine usable output, not the temperature range alone.
Ambient-temperature derating	Horizontal mounting. At 85–135 V AC, continuous output is 100% through +50°C and 30% at +85°C; the low-line graph starts at −30°C. At 180–305 V AC, continuous output is 80% at −40°C, 100% from −30°C through +60°C, and 30% at +85°C. Follow the applicable curve between marked points.
Peak-temperature envelope	For peak-capable outputs, the 85–135 V AC graph shows 150% from 0 to +50°C, 120% at +60°C and 45% at +85°C. The 180–305 V AC graph shows 200% from 0 to +60°C and 60% at +85°C. These are peak envelopes only; duty, duration and average-power limits still apply.
Input-voltage derating	The 60 Hz input graph permits 80% continuous load at 85 V AC, rising to 100% at 100 V AC and remaining at 100% through 305 V AC. Apply temperature derating simultaneously.
Storage and vibration	Storage: −40 to +85°C and 10–95% RH, non-condensing. Vibration: 10–500 Hz, 2 G, 10 minutes per cycle, 60 minutes each along X, Y and Z.
Temperature coefficient	±0.05%/°C from 0 to +60°C.
Altitude derating	Above 2000 m, reduce allowable ambient temperature by 5°C per additional 1000 m for this fan-cooled model. The safety-category altitude limits below also apply.
Cold-start limitation	Below 100 V AC at −30°C, startup may exhibit an output restart within 3 seconds; see the applicable derating note.
Fan control and noise	Built-in DC fan: ON at RTH3 ≥50 ±10°C and OFF at RTH3 ≤40 ±10°C. Noise is 40 dB typical in the function table; the series feature describes low noise below 40 dB. This is not a fixed sound level under every installation condition. RTH3 is an internal temperature sensor; these thresholds are not ambient-air start/stop temperatures.

Safety and EMC

Safety standards	CB: IEC 62368-1, IEC 60335-1, IEC 61558-1/-2-16, IEC 61010-1/-2-201, IEC 60601-1 and IEC 62477-1. DEKRA: corresponding BS EN/EN standards, including EN 60601-1 version 3.2. UL: UL 62368-1, ANSI/AAMI ES60601-1 version 3.2 and UL 61010-1/-2-201. CCC GB 4943.1, BSMI CNS 15598-1, EAC TP TC 004 and SEMI F47 are listed. Integration into final equipment remains subject to its applicable requirements.
By-request certifications	KC 62368-1 and BIS IS 13252 (Part 1) certification is by request with no stock; confirm the actual ordered version. A BIS logo may be absent on some factories or models; contact MEAN WELL for details.
Medical insulation and leakage	Primary–secondary: 2 × MOPP; primary–earth: 1 × MOPP; secondary–earth: 1 × MOPP. MOPP applies only at 100–240 V AC input. The series is intended for BF-related medical equipment applications, subject to final-system compliance. Earth leakage is <350 µA rms and touch current <100 µA rms at 277 V AC.
Overvoltage category and altitude	IEC/EN 61558-1/-2-16: OVC III up to 2000 m. IEC/EN/UL 62368-1, IEC/EN 60335-1, IEC/EN/UL 61010-1/-2-201 and IEC/EN 62477-1: OVC II up to 5000 m. IEC/EN/ANSI/AAMI ES60601-1: OVC II up to 4000 m. Do not combine the OVC III rating with the 5000 m limit.
SELV scope	The catalogue SELV/ES1 entries apply to the 5–36 V output models under IEC/EN 61558-2-16, IEC/EN 60335-1 and IEC/EN/UL 62368-1; do not extend them to the 48 V or 60 V models.
Dielectric strength	Input–output 4.2 kV AC; input–FG 2.1 kV AC; output–FG 1.5 kV AC.
Insulation resistance	100 MΩ at 500 V DC, 25°C and 70% RH for input–output, input–FG and output–FG.
EMC emissions	BS EN/EN 55032 (CISPR 32), CNS 15936, GB/T 9254.1, KS C 9832: Class B; BS EN/EN 55011 (CISPR 11): Class B. BS EN/EN 55014-1 (CISPR 14-1) is also listed, without a separate class in that row.
Harmonic current and flicker	EN/IEC 61000-3-2: Class A; GB 17625.1 is also listed. Voltage flicker: EN/IEC 61000-3-3.
Immunity framework	BS EN/EN 55035 (CISPR 35), EN/IEC 61000-6-2, EN/IEC 60601-1-2, EN 55014-2 (CISPR 14-2), KS C 9835 and SEMI F47 tested at 200 V AC.
Immunity levels	IEC 61000-4-2 ESD: Level 4, 15 kV air / 8 kV contact. IEC 61000-4-3: Level 3, 10 V/m at 80 MHz–2.7 GHz; Table 9, 9–28 V/m at 385 MHz–5.78 GHz. IEC 61000-4-4 EFT/burst: Level 3, 2 kV. IEC 61000-4-5 surge: Level 4, 2 kV line–line / 4 kV line–earth. IEC 61000-4-6 conducted: Level 3, 10 V. IEC 61000-4-8 magnetic field: Level 4, 30 A/m.
Voltage dips and interruptions	IEC 61000-4-11: >95% dip for 0.5 period, 30% dip for 25 periods, and >95% interruption for 250 periods.
Component EMC test arrangement	The component supply was tested on a 360 × 360 × 1 mm metal plate. Reconfirm the complete equipment against applicable EMC directives; the plate is a test arrangement, not a supplied accessory.

Mechanical details and accessories

Dimensions	179 × 99 × 30 mm (L × W × H); drawing tolerance ±1 mm. Case 309A.
Chassis mounting	Side: four M4 positions across both sides, maximum penetration 5 mm, 150 mm spacing and 18.5 mm end offset; vertical references 13 and 12.5 mm, with 2 mm local detail. Bottom: four M4 positions, 3 mm penetration, 150 ×50 mm spacing with 18/28 mm offsets. Bracket installation spacing: 150 ×121.4 mm; use the complete mounting diagram. The side view also marks a local 6.9 mm dimension beside the 13 mm reference.
Power terminals	Input 1 AC/L or DC +Vin, 2 AC/N or DC −Vin, 3 FG: M3.5, 8–10 kgf·cm. Output 4/5 −V and 6/7 +V: M3.5, 8–10 kgf·cm.
Control connector	CN1 DJS-1125R-06 or equivalent; JS-1124-06 mating housing and JS-1124-T terminal.
Standard control harness	One CN1 mating-wire assembly per power supply is listed as a standard accessory; UL1007 28 AWG, length 50 ±5 mm.
Optional accessories	Terminal cover(s) PEE4TBC-03 and PEE4TBC-04: by request, ordered separately, one of each applicable cover per unit. PGG2MHS012 mounting brackets: four per unit, by request and ordered separately; the installation drawing uses four M4 screws.
Unit packing reference	670 g, catalogue packing reference per unit; not a measured net-weight claim.
Outer packing	18 units / 12.5 kg / 0.65 CUFT.
Reliability	1699.1k hours minimum, Telcordia SR-332 (Bellcore); 257.1k hours minimum, MIL-HDBK-217F at 25°C.
Construction and warranty	Conformal coating; 5-year manufacturer warranty.

Application information

Typical uses	Industrial automation and control systems, security, mechanical and electrical equipment, electronic instruments, networking, telecom, PoE power sourcing, home automation and medical equipment integration.

Installation and operating guidance

Safe installation and protective earth	Disconnect the supply before installation or maintenance and prevent inadvertent reconnection. Have faults examined by qualified personnel; do not remove the case yourself. Connect FG to protective earth and install inside the final equipment enclosure, away from water, excessive moisture and heat sources.
Mounting and ventilation	Keep ventilation openings unobstructed and leave 10–15 cm clearance when an adjacent device is a heat source. Respect the model drawing’s maximum screw intrusion and insulation distances. Nonstandard mounting orientation, high ambient temperature and low input voltage may require additional derating.
Terminal tightening guidance	Input and output terminal screws: M3.5; suggested tightening torque 8–10 kgf·cm. Use the model-specific terminal table rather than the manual’s general material-based screw-torque chart.
Conductor selection	Select input and output conductors for the actual current, permitted peak duty, installation conditions and applicable wiring rules. Secure every strand and terminal. The generic manual’s wire table only covers up to 40 A; it does not size higher-current circuits. Its note derates each listed wire-current recommendation to 80% when five or more wires are connected.
Continuous and transient loading	Keep continuous current and power within the selected model’s ratings and derating curves. Where that model explicitly permits peak output, also follow its peak duration, duty cycle and operating conditions; the transient rating is not a continuous rating.
Surrounding material condition	For BSMI-certified equipment, use surrounding materials with flammability rating V1 or better as specified by the installation manual. Apply regulatory conditions to the actual certified model and final assembly.
Complete-system EMC verification	The model datasheet records EMC testing on a 360 × 360 × 1 mm metal plate. This is a test arrangement, not a required installation clearance. Recheck EMC with the power supply installed in the final equipment and connected to a representative load; wiring and assembly affect the result. The linked component EMI guidance does not certify the finished equipment.