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Mean Well RPS-300-27 Green Power Supply 300W 27V 7.4A - Medical Power Supply

5" x 3" compact sizemedical safety approvedextreme low leakage current

SKU RPS-300-27

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Overview

RPS-300-27 is the 27V output model of this series: typical efficiency 93%.

RPS-300 is a 300W highly reliable green PCB type medical power supply with a high power density on the 5" by 3" footprint. It accepts 90~264VAC input and offers various output voltages between 12V and 48V. The working efficiency is up to 93% and the extremely low no load power consumption is down below 0.5W. The extremely low leakage current is less than 150μA. In addition, it conforms to international medical regulations (2*MOPP) and EMC BS EN/EN55011, perfectly fitting all kinds of BF rated "patient contact" medical system equipment. RPS-300 series also offers the enclosed style model (RPS-300-C).

Features

5"×3" compact size
ANSI/AAMI ES60601-1, IEC/BS EN/EN 60601-1 (2 x MOPP) and IEC/EN/UL 62368-1 approved
Suitable for BF application with appropriate system consideration
200W convection, 300W force air
No load power consumption<0.5W by PS-ON control
Extremely low leakage current
5Vdc standby output, 12Vdc fan supply, Power Good, Power Fail and remote sense
Protections: Short circuit / Overload / Over voltage / Over temperature
Typical Lifetime > 40K hours
3 years warranty

Specifications

RPS-300-27Specifications from the official datasheet (2026-07-14 edition)

OUTPUT

DC VOLTAGE: 27V
RATED CURRENT (20.5CFM): 11.12A
CURRENT Convection: 0 ~ 7.4A
CURRENT 20.5CFM: 0 ~ 11.12A
RATED POWER Convection: 200W
RATED POWER 20.5CFM: 300W
RIPPLE & NOISE (max.)^Note.2: 200mVp-p
VOLTAGE ADJ. RANGE (main output ): 25.65 ~ 28.35V
VOLTAGE TOLERANCE^Note.3: ±2.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±1.0%
SETUP, RISE TIME: 2500ms, 30ms/230VAC 3000ms, 30ms/115VAC at full load
HOLD UP TIME (Typ.): 13ms/230VAC/115VAC at full load

INPUT

VOLTAGE RANGE^Note.4: 90 ~ 264VAC 127 ~ 370VDC
FREQUENCY RANGE: 47 ~ 63Hz
POWER FACTOR (Typ.): PF>0.93/230VAC PF>0.98/115VAC at full load
EFFICIENCY (Typ.): 93%
AC CURRENT (Typ.): 3.5A/115VAC 1.8A/230VAC
INRUSH CURRENT (Typ.): COLD START 35A/115VAC 70A/230VAC
LEAKAGE CURRENT(max.)^Note.5: PCB Type: Earth leakage current <150μA / 264VAC, Touch current <70μA/264VAC Enclosed Type: Earth leakage current <200μA / 264VAC, Touch current <70μA/264VAC

PROTECTION

OVERLOAD: 105 ~ 135% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 29.5 ~ 33.5V Protection type : Shut down o/p voltage, re-power on to recover
OVER TEMPERATURE: Protection type : (TSW1)Shut down o/p voltage, recovers automatically after temperature goes down Protection type : (TSW2)Shut down o/p voltage, re-power on to recover

FUNCTION

5V STANDBY: 5Vsb : 5V@0.6A without fan, 1A with fan 20.5CFM ; tolerance ± 2%, ripple : 150mVp-p(max.)
FAN SUPPLY: 12V@0.5A for driving a fan ; Tolerance -15% ~ +10% at main output 20% rated current (20.5CFM)
PS-ON INPUT SIGNAL: Power on: PS-ON = "Hi" or " > 2 ~ 5V" ; Power off: PS-ON = "Low" or " < 0 ~ 0.5V"
POWER GOOD / POWER FAIL: 500ms>PG>10ms ; The TTL signal goes high with 10ms to 500ms delay after power set up ; The TTL signal goes low at least 1ms before Vo below 90% of rated value

ENVIRONMENT

WORKING TEMP.: -30 ~ +70℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +85℃ , 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 50℃ )
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes
OPERATING ALTITUDE^Note.6: 4000 meters

SAFETY & EMC

SAFETY STANDARDS: IEC 60601-1:2005+A1+A2, IEC 62368-1 , TUV BS EN/ EN 60601-1:2006+A1+A12+A2,BS EN/EN 62368-1 ANSI/AAMI ES60601-1:2005+A2, CAN/CSA C22.2 No. 60601-1:2014+A2, UL 62368-1 IEC 60335-1:2010+A1+A2, Dekra BS EN/ EN 60335-1:2012+A11+A13A+A1+A14+A2+A15 EAC TP TC 004 approved
ISOLATION LEVEL: Primary-Secondary: 2xMOPP, Primary-Earth:1xMOPP, Secondary-Earth:1xMOPP
WITHSTAND VOLTAGE: I/P-O/P:4KVAC I/P-FG:2KVAC O/P-FG:1.5KVAC
ISOLATION RESISTANCE: I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION: Parameter Standard Test Level

Conducted emission BS EN/EN55011 (CISPR11), BS EN/EN55032(CISPR32) Class B
Radiated emission BS EN/EN55011 (CISPR11), BS EN/EN55032(CISPR32) Class B
Harmonic current BS EN/EN61000-3-2 Class A
Voltage flicker BS EN/EN61000-3-3
EMC IMMUNITY: BS EN/EN55035, BS EN/EN60601-1-2

Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 4, 15KV air; Level 4, 8KV contact
RF field susceptibility BS EN/EN61000-4-3 Level 3, 10V/m( 80MHz~2.7GHz ) Table 9, 9~28V/m( 385MHz~5.78GHz )
EFT bursts BS EN/EN61000-4-4 Level 3, 2KV
Surge susceptibility BS EN/EN61000-4-5 Level 4, 4KV/Line-FG; 2KV/Line-Line
Conducted susceptibility BS EN/EN61000-4-6 Level 3, 10V
Magnetic field immunity BS EN/EN61000-4-8 Level 4, 30A/m
Voltage dip, interruption BS EN/EN61000-4-11 100% dip 1 periods, 30% dip 25 periods, 100% interruptions 250 periods

Parameter	Standard	Test Level
Conducted emission	BS EN/EN55011 (CISPR11), BS EN/EN55032(CISPR32)	Class B
Radiated emission	BS EN/EN55011 (CISPR11), BS EN/EN55032(CISPR32)	Class B
Harmonic current	BS EN/EN61000-3-2	Class A
Voltage flicker	BS EN/EN61000-3-3

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 4, 15KV air; Level 4, 8KV contact
RF field susceptibility	BS EN/EN61000-4-3	Level 3, 10V/m( 80MHz~2.7GHz ) Table 9, 9~28V/m( 385MHz~5.78GHz )
EFT bursts	BS EN/EN61000-4-4	Level 3, 2KV
Surge susceptibility	BS EN/EN61000-4-5	Level 4, 4KV/Line-FG; 2KV/Line-Line
Conducted susceptibility	BS EN/EN61000-4-6	Level 3, 10V
Magnetic field immunity	BS EN/EN61000-4-8	Level 4, 30A/m
Voltage dip, interruption	BS EN/EN61000-4-11	100% dip 1 periods, 30% dip 25 periods, 100% interruptions 250 periods

OTHERS

MTBF: PCB type: 2853.1K hrs min. Telcordia SR-332 (Bellcore) ; 160.0K hrs min. MIL-HDBK-217F (25℃) Enclosed type: 1487.9K hrs min. Telcordia SR-332 (Bellcore) ; 163.8K hrs min. MIL-HDBK-217F (25℃)
DIMENSION (L*W*H): PCB type:127*76.2*35mm or 5"*3"*1.37"inch Enclosed type:130*86*43mm or 5.11"*3.39"*1.69"inch
PACKING: PCB type:0.37Kg; 36pcs/14.3Kg/0.96CUFT Enclosed type:0.563Kg; 24pcs/14.5Kg/0.77CUFT

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. Touch current was measured from primary input to DC output.
6. 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).
7. The power supply is considered a component which will be installed into a final equipment. All the ClassⅠ(with FG) EMC tests are executed by mounting the unit on a 360mm*360mm metal plate with 1mm of thickness. 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 )

Technical drawings

RPS-300-27 Block Diagram — Block Diagram

RPS-300-27 Derating Curve — Derating Curve

RPS-300-27 Mechanical Specification — Mechanical Specification

RPS-300-27 ◎ RPS-300-C (Enclosed type) — ◎ RPS-300-C (Enclosed type)

RPS-300-27 Illustration (page 6) — Illustration (page 6)

RPS-300-27 AC Input Connector (CN1) : JST B5P-VH or equivalent — AC Input Connector (CN1) : JST B5P-VH or equivalent

RPS-300-27 DC Output Connector (CN2,CN3) — DC Output Connector (CN2,CN3)

Typical applications

Downloads

Certificates8

Mean Well E227340 UL Certificate PDF Download

Mean Well 0147476-EAC Certificate PDF Download

Mean Well RPS-300-RPS-300-C-TUV Certificate PDF Download

Mean Well RPS-300(C)-Dekra seal Certificate PDF Download

Mean Well RPS-300-300-C-CB Certificate PDF Download

Mean Well RPS-300-EMC Certificate PDF Download

Mean Well RPS-300-CE-dec Certificate PDF Download

Mean Well RPS-300-UK-dec Certificate PDF Download

Test reports1

Mean Well RPS-300-27 Test Report PDF Download

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the RPS-300-27 for a 27V industrial controller or automation panel?

Yes, if the controller or panel requires a constant-voltage 27V supply and stays within 7.4A and 200W. The unit accepts 90-264VAC input, which suits a wide range of AC power sources used in industrial equipment.

Is the RPS-300-27 suitable for medical or lab equipment that needs a 27V DC supply?

It is designed as a medical power supply and includes medical safety approval (IEC 60601-1 / ANSI/AAMI ES60601-1, 2xMOPP) with touch current below 70μA. For a 27V device, the load still needs to fit within the unit's 7.4A and 200W convection output limits.

Can this power supply run embedded or OEM equipment that uses a 27V bus?

Yes, it can support embedded or OEM equipment built around a constant 27V input, provided the total draw does not exceed 7.4A or 200W. Its compact 127.0 x 76.2 x 35.0 mm size also helps where board-level space is limited.

Can I use the RPS-300-27 for a 27V actuator, HMI, or industrial accessory load?

It can be used for 27V constant-voltage accessories when the combined load remains at or below 7.4A and 200W. That makes it a fit for moderate-power industrial and automation devices that are specified for 27V DC input.

How does the RPS-300-27 compare with other 27V models in the RPS series?

Within the RPS-300 series, 27V is offered as this PCB-type RPS-300-27 and the enclosed RPS-300-27-C, both rated 7.4A and 200W by convection and 11.12A and 300W with an external 20.5CFM fan. The series' other outputs on this sheet are 12V, 15V, 24V and 48V; other RPS families are not covered by this sheet.

Is the RPS-300-27 suitable for outdoor or harsh exposed locations?

No IP rating is listed in these specs, so it should not be treated as an outdoor-exposed power supply. The published operating temperature range is -30°C to +70°C, but outdoor suitability is not established by these specifications.

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