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Mean Well RSP-500-3.3 Power Supply 297W 3.3V 90A

Name: Mean Well RSP-500-3.3 Power Supply 297W 3.3V 90A
Brand: Mean Well
SKU: RSP-500-3.3
Price: 114.84 USD
Availability: InStock

1U low profile with active PFChigh efficiency

SKU RSP-500-3.3

$114.84 USD

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Select model — 6 in this family

RSP-500-3.3

RSP-75-3.3 75W 3.3V Low stock$40.88 USD

RSP-100-3.3 100W 3.3V Low stock$44.76 USD

RSP-150-3.3 150W 3.3V In stock$43.03 USD

RSP-200-3.3 200W 3.3V Low stock$54.37 USD

RSP-320-3.3 320W 3.3V Low stock$58.02 USD

RSP-500-3.3 500W 3.3V Low stock$114.84 USD

Product variants

In stock

Overview

RSP-500-3.3 is the 3.3V output model of this series: rated current 90A, rated power 297W, typical efficiency 81%.

RSP-500 is a 500W single output enclosed type AC/DC power supply. This series operates for 85~264VAC input voltage and offers the models with the DC output mostly demanded from the industry. Each model is cooled by the built-in fan with fan speed control, working for the temperature up to 70℃. Moreover, RSP-500 provides vast design flexibility by equipping various built-in functions such as remote ON-OFF control, remote sense,etc.

Features

Universal AC input / Full range
Built-in active PFC function
High efficiency up to 90.5%
Forced air cooling by built-in DC fan (Note.5)
Built-in remote ON-OFF control / remote sense
Protections: Short circuit / Overload / Over voltage / Over temperature
3 years warranty

Specifications

RSP-500-3.3Specifications from the official datasheet (2025-09-26 edition)

OUTPUT

DC VOLTAGE: 3.3V
RATED CURRENT: 90A
CURRENT RANGE: 0 ~ 90A
RATED POWER: 297W
RIPPLE & NOISE (max.)^Note.2: 120mVp-p
VOLTAGE ADJ. RANGE: 2.8 ~ 3.6V
VOLTAGE TOLERANCE^Note.3: ±2.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±1.0%
SETUP, RISE TIME: 1500ms, 80ms/230VAC 3000ms, 80ms/115VAC at full load
HOLD UP TIME (Typ.): 18ms/230VAC 14ms/115VAC at full load

INPUT

VOLTAGE RANGE^Note.4: 85 ~ 264VAC 120 ~ 370VDC
FREQUENCY RANGE: 47 ~ 63Hz
POWER FACTOR (Typ.): PF>0.95/230VAC PF>0.98/115VAC at full load
EFFICIENCY (Typ.): 81%
AC CURRENT (Typ.): 4.2A/115VAC 2.1 A/230VAC
INRUSH CURRENT (Typ.): 20A/115VAC 40A/230VAC
LEAKAGE CURRENT: <2mA / 240VAC

PROTECTION

OVERLOAD: 105 ~ 130% rated output power Protection type : Constant current limiting , recovers automatically after fault condition is removed
OVER VOLTAGE: 3.8 ~ 4.5V Protection type : Shut down o/p voltage, re-power on to recover
OVER TEMPERATURE: Shut down o/p voltage, recovers automatically after temperature goes down

FUNCTION

REMOTE CONTROL: POWER ON:open or 0~0.8VDC between RC+(Pin 4)&RC-(Pin3) on CN100 POWER OFF: 4~10VDC between RC+(Pin 4)&RC-(Pin3) on CN100
REMOTE SENSE: Compensate voltage drop on the load wiring up to 0.3V
FAN CONTROL (Typ.): RTH2 ≧ 50 ℃± 10 ℃ Fan on ; RTH2 ≦ 40 ℃± 10 ℃ Fan off (Fan always on for 3.3~5V,Fan ON/OFF control for 12~48V)

ENVIRONMENT

WORKING TEMP.: -30 ~ +70℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +85℃, 10 ~ 95% RH
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 50℃)
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes

SAFETY & EMC (Note.4)

SAFETY STANDARDS: UL62368-1, TUV BS EN/EN62368-1 , AS/NZS 62368.1, EAC TP TC 004 , CCC GB4943.1 , BSMI CNS15598-1, BIS IS13252(Part1): 2010/IEC 60950-1:2005 approved
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℃ / 70% RH
EMC EMISSION: Compliance to BS EN/EN55032 (CISPR32) Class B, BS EN/EN61000-3-2,-3, EAC TP TC 020,GB/T 9254, CNS15936 Class B
EMC IMMUNITY: Compliance to BS EN/ EN61000-4-2,3,4,5,6,8,11, BS EN/ EN55035, BS EN/ EN61000-6-2, EAC TP TC 020

OTHERS

MTBF: 1372.4K hrs min. Telcordia SR-332 (Bellcore) ; 187.9K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 230*127*40.5mm (L*W*H)
PACKING: 1.3Kg; 9pcs/12.7Kg/0.7CUFT

Test conditions and notes7

1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
3. Tolerance : includes set up tolerance, line regulation and load regulation.
4. Derating may be needed under low input voltages. Please check the derating curve for more details.
5. Fan always on for 3.3~5V,Fan ON/OFF control for 12~48V.
6. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives.For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
7. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).

Technical drawings

RSP-500-3.3 Mechanical Specification — Mechanical Specification

RSP-500-3.3 Block Diagram — Block Diagram

RSP-500-3.3 Derating Curve — Derating Curve

RSP-500-3.3 Function Manual — Function Manual

Typical applications

Factory control or automation apparatus
Test and measurement instrument
Laser related machine
Burn-in facility
RF application

Downloads

Certificates3

CB Certificate (RSP-500)(EN) PDF Download

TUV Certificate (RSP-500)(EN) PDF Download

EMC Certificate (RSP-500)(EN) PDF Download

Test reports1

Test Report (RSP-500-3.3)(EN) PDF Download

Catalogues2

Mean Well Catalog (Industrial) PDF Download

Mean Well Sign Panel Catalog PDF Download

FAQ

What equipment uses a 3.3V, high-current rail that the RSP-500-3.3 can supply?

The RSP-500-3.3 provides 3.3V at 90A (297W), suitable for powering DRAM subsystems, FPGA I/O logic rails, and logic-level loads in industrial computing boards that require a high-current 3.3V source.

What temperature range does the RSP-500-3.3 operate in?

The RSP-500-3.3 is rated for -30°C to +70°C ambient operation (refer to the derating curve). It is an enclosed type unit with UL62368-1, TÜV BS EN/EN62368-1, AS/NZS 62368.1, EAC, CCC, BSMI and BIS safety approvals.

How does the RSP-500-3.3 compare to the RSP-500-4 and RSP-500-5?

All three share the 230.0 × 127.0 × 40.5 mm chassis and 85-264VAC input. The RSP-500-3.3 provides 297W at 90A, the RSP-500-4 provides 360W at 90A, and the RSP-500-5 provides 450W at 90A. All three run at 90A; total power increases as output voltage rises.

What is the actual rated output power of the RSP-500-3.3?

The RSP-500-3.3 is rated at 297W (3.3V × 90A). The low output voltage limits total power below the RSP-500 series nameplate. It weighs 1.3 kg and includes a 3-year warranty.

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