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Mean Well RSP-320-27 Power Supply 320W 27V 11.9A

Name: Mean Well RSP-320-27 Power Supply 320W 27V 11.9A
Brand: Mean Well
SKU: RSP-320-27
Price: 65.6 USD
Availability: InStock

1U low profile with active PFChigh efficiency

SKU RSP-320-27

$65.60 USD

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Select model — 9 in this family

RSP-320-27

RSP-75-27 75W 27V In stock$40.88 USD

RSP-100-27 100W 27V Low stock$44.76 USD

RSP-150-27 150W 27V Low stock$47.55 USD

RSP-320-27 320W 27V Low stock$65.60 USD

RSP-500-27 500W 27V Backorder$114.85 USD

RSP-750-27 750W 27V In stock$220.88 USD

RSP-1000-27 1000W 27V In stock$285.73 USD

RSP-1500-27 1500W 27V Backorder$433.58 USD

RSP-1600-27 1600W 27V Low stock$459.86 USD

Product variants

In stock

Overview

RSP-320-27 is the 27V output model of this series: rated current 11.9A, rated power 321.3W, typical efficiency 89%.

RSP-320 is a 320W single output enclosed type AC/DC power supply. This series operates for 88~264VAC 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℃.

Features

Universal AC input / Full range
Built-in active PFC function
High efficiency up to 90%
Forced air cooling by built-in DC Fan with fan speed control function
Protections: Short circuit / Overload / Over voltage / Over temperature
Operating altitude up to 5000 meters
Optional conformal coating
LED indicator for power on
3 years warranty

Specifications

RSP-320-27Specifications from the official datasheet (2026-09-04 edition)

OUTPUT

DC VOLTAGE: 27V
RATED CURRENT: 11.9A
CURRENT RANGE: 0 ~ 11.9A
RATED POWER: 321.3W
RIPPLE & NOISE (max.)^Note.2: 200mVp-p
VOLTAGE ADJ. RANGE: 26 ~ 31.5V
VOLTAGE TOLERANCE^Note.3: ±1.0%
LINE REGULATION: ±0.2%
LOAD REGULATION: ±0.5%
SETUP, RISE TIME: 1500ms, 50ms/230VAC 3000ms, 50ms/115VAC at full load
HOLD UP TIME (Typ.): 8ms at full load 230VAC /115VAC

INPUT

VOLTAGE RANGE^Note.4: 88 ~ 264VAC 124 ~ 370VDC
FREQUENCY RANGE: 47 ~ 63Hz
POWER FACTOR (Typ.): PF>0.95/230VAC PF>0.98/115VAC at full load
EFFICIENCY (Typ.): 89%
AC CURRENT (Typ.): 4A/115VAC 2A/230VAC
INRUSH CURRENT (Typ.): 20A/115VAC 40A/230VAC
LEAKAGE CURRENT: <1mA / 240VAC

PROTECTION

OVERLOAD: 105 ~ 135% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 32.9 ~ 38.3V 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

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
OPERATING ALTITUDE: 5000 meters

SAFETY & EMC

SAFETY STANDARDS: UL62368-1,TUV BS EN/EN62368-1,EAC TP TC 004, CCC GB4943.1,BSMI CNS15598-1, AS/NZS 60950.1, IS13252(Part1)/ IEC60950-1(except for 2.5V,48V),Dekra EN 61558-1/2-16,IEC 61558-1/2-16(for 12V or higher models) 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, CNS15936 , GB9254 Class B , GB17625.1
EMC IMMUNITY: Compliance to BS EN/ EN61000-4-2,3,4,5,6,8,11, BS EN/ EN55035, light industry level, EAC TP TC 020

OTHERS

MTBF: 1826.4K hrs min. Telcordia SR-332 (Bellcore) ; 192.9K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 215*115*30mm (L*W*H)
PACKING: 0.9Kg; 15pcs/14.5Kg/0.67CUFT

Test conditions and notes8

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. 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).
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. For charging related applications, please consult Mean Well for details.
8. Strongly recommended that external output capacitance should not exceed 5000uF. (Only for: RSP-320-2.5/-3.3/-4/-5/-7.5/-12/-13.5/-15)

Technical drawings

RSP-320-27 Mechanical Specification — Mechanical Specification

RSP-320-27 Block Diagram — Block Diagram

RSP-320-27 Derating Curve — Derating Curve

Typical applications

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

Downloads

Certificates4

UL Certificate (RSP-320)(EN) PDF Download

CB Certificate (RSP-320)(EN) PDF Download

TUV Certificate (RSP-320)(EN) PDF Download

EMC Certificate (RSP-320)(EN) PDF Download

Test reports1

Test Report (RSP-320-27)(EN) PDF Download

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

What is the RSP-320-27 used for in automation or embedded systems?

The RSP-320-27 delivers 27V at 11.9A (320W), a voltage used by certain stepper motor drives, specialized industrial sensors, and embedded systems designed for a 24-28V nominal bus. Its 215.0 × 115.0 × 30.0 mm low-profile chassis fits panel and rack installations.

Can the RSP-320-27 operate in cold storage facilities?

The RSP-320-27 is rated for -30°C to +70°C ambient operation (derating per curve at higher temperatures) and 20-90% RH non-condensing, making it suitable for indoor cold-storage environments. It is not rated for outdoor or wet-location use.

How does the RSP-320-27 compare to the RSP-320-24 and RSP-320-36?

All three units share the same 215.0 × 115.0 × 30.0 mm chassis and 88-264VAC input. The RSP-320-24 provides 320W at 13.4A, the RSP-320-27 provides 320W at 11.9A, and the RSP-320-36 provides 320W at 8.9A. All maintain approximately 320W output; current rating decreases as output voltage increases.

What certifications does the RSP-320-27 hold?

The RSP-320-27 is approved to UL62368-1, TUV BS EN/EN62368-1, EAC TP TC 004, CCC GB4943.1 and BSMI CNS15598-1, among other listed standards. The unit weighs 0.9 kg.

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