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Mean Well LOP-200-27 200W 4"×2" Low Profile Open Frame Power Supply 27V 5.3A

conventional 140W200W if using fanhigh frequency up to 94%

SKU LOP-200-27

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Overview

LOP-200-27 is the 27V output model of this series: typical efficiency 94%.

The LOP-200 is a 200W highly reliable, energy-efficient, low-profile open frame type power supply. With a high power density of 25W/in³ within the standard size of 4" × 2", it features a universal input voltage range of 80~264VAC, making it suitable for global applications. The series offers a comprehensive selection of standard voltages, including 12V/15V/18V/24V/27V/36V/48V/54V, and comes in a complete range of models. The main features of the LOP-200 include: low standby power (<0.5W), high efficiency (up to 94%), capable of providing 140W under natural air cooling and 200W with an additional fan. It has a 150% @ 3 seconds peak load capacity, a wide operating temperature range of -40 to +80℃, compliance with OVC III, suitable for Class I (with FG) or Class II (without FG) systems. The product has obtained multiple safety certifications, including 62368-1/60601-1/61558-1/60335-1, and is designed to meet 2xMOPP and extremely low touch leakage current <70 μ A, making it suitable for BF class medical devices. With high product safety and excellent EMC performance, it is versatile and applicable in various fields such as ITE, medical, industrial control, home automation and more. It is a cost-effective slim open frame type power supply.

Features

MEAN WELL Patent Number: ZL 202223277512.1
4"×2" compact size with low profile (25.4mm)
80~264Vac input with PFC, No load power consumption<0.5W
Global certificates in multi-fields (ITE 62368-1, Medical 60601-1, Household 60335-1, Industrial 61558-1/-2-16)
150%peak load @ 3s
140W convection, 200W with FAN 10.98CFM forced-cooled
Suitable for Class Ⅰ or Class Ⅱ installations
Over voltage category Ⅲ (OVC Ⅲ)
-40 ~ +80℃ wide range operation temperature
High efficiency up to 94%
Protections: Short circuit / Overload / Over voltage / Over temperature
Extremely low leakage current, 2 x MOPP, suitable for BF medical applications
Operating altitude up to 5000 meters
Built-in 12V/0.5A for external FAN
3 years warranty

Specifications

LOP-200-27Specifications from the official datasheet (2026-09-02 edition)

OUT PUT

DC VOLTAGE: 27V
CURRENT Peak(3sec.): 11.1A
CURRENT 10.98CFM: 7.5A
CURRENT Convection: 5.3A
RATED POWER Peak(3sec.): 299.7W
RATED POWER 10.98CFM: 202.5W
RATED POWER Convection: 143.1W
RIPPLE & NOISE (max.)^Note.2: 200mVp-p
VOLTAGE ADJ. RANGE (MAIN OUTPUT): 25.6 ~ 29V
VOLTAGE TOLERANCE^Note.3: ±1.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±1.0%
SETUP, RISE TIME: 1000ms, 30ms/230Vac 1500ms, 30ms/115Vac at full load
HOLD UP TIME (Typ.): 16ms@140W load , 8ms@200W load

INPUT

VOLTAGE RANGE^Note.4: 80 ~ 264Vac 113 ~ 370Vdc
FREQUENCY RANGE: 47 ~ 63Hz
POWER FACTOR: PF>0.95/230Vac PF>0.98/115Vac at full load
EFFICIENCY (Typ.): 94%
AC CURRENT (Typ.): 2.5A/115Vac 1A/230Vac
INRUSH CURRENT (Typ.): COLD START 40A/115Vac 80A/230Vac
LEAKAGE CURRENT: ClassⅠ: Earth leakage current < 500 μA (rms) @ 264Vac , touch current < 70μA (rms) @ 264Vac ClassⅡ: Touch current < 100 μA (rms) @ 264Vac

PROTECTION

OVERLOAD: 105 ~ 180% rated output power, Protection type : Hiccup after 3 sec, recovers automatically(3 sec) after fault condition is removed
OVER VOLTAGE: 29.7 ~ 35.1V Protection type : Shut down o/p voltage, re-power on to recover
OVER TEMPERATURE: Protection type : Shut down o/p voltage, recovers automatically after temperature goes down or re-power on to recover

FUNCTION

EXTERNAL FAN SUPPLY: 12V@0.5A for driving a fan (10.98CFM) / 12V@0.1A without fan ; Tolerance -20% ~ +15% at main output 20% rated current

ENVIRONMENT

WORKING TEMP.: -40 ~ +80℃ (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

SAFETY & EMC

SAFETY STANDARDS^Note.5: CB IEC62368-1, IEC60335-1, IEC61558-1/-2-16, IEC60601-1; TUV BS EN/EN62368-1, BS EN/EN60335-1, BS EN/EN61558-1/-2-16, BS EN/EN60601-1(3.2 Version); UL UL62368-1, ANSI / AAMI ES60601-1(3.2 Version) ; CCC GB4943.1 ; RCM AS/NZS 61558-1/-2-16; EAC TPTC 004 approved.
ISOLATION RESISTANCE: Primary-Secondary: 2xMOPP, Primary-Earth:1xMOPP, Secondary-Earth:1xMOPP
OVER VOLTAGE CATEGORY: IEC/EN 61558-1/-2-16(OVC Ⅲ, altitude up to 2000M ) IEC/EN/UL 62368-1 (OVC Ⅱ, altitude up to 5000M ) IEC/EN 60335-1 (OVC Ⅱ, altitude up to 5000M ) IEC/EN 60601-1 (OVC Ⅱ, altitude up to 4000M )
PROTECTIVE EXTRA-LOW VOLTAGE: IEC/EN61558-2-16 (SELV, 12~48V ) IEC/EN/UL 62368-1 (SELV / ES1,12~48V )
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 & Radiated BS EN/EN55032(CISPR32) BS EN/EN55011(CISPR11) ClassⅠ: Class B , Class Ⅱ: Class A
Conducted & Radiated BS EN/EN55014(CISPR32) ClassⅠ: 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/ EN61000-6-2

Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 4, 15KV air; Level 4, 8KV contact
Radiated Susceptibility BS EN/EN61000-4-3 Level 3, 10V/m( 80MHz~2.7GHz ) Table 9, 9~28V/m( 385MHz~5.78GHz )
EFT/Burest BS EN/EN61000-4-4 Level 3, 2KV
Surge BS EN/EN61000-4-5 Level 4, 4KV/Line-FG; 2KV/Line-Line
Conducted BS EN/EN61000-4-6 Level 3, 10V
Magnetic Field BS EN/EN61000-4-8 Level 4, 30A/m
Voltage Dips and interruptions BS EN/EN61000-4-11 ＞95% dip 0.5 periods, 100% dip 1 periods, 30% dip 25 periods, ＞95% interruptions 250 periods

Parameter	Standard	Test Level
Conducted & Radiated	BS EN/EN55032(CISPR32) BS EN/EN55011(CISPR11)	ClassⅠ: Class B , Class Ⅱ: Class A
Conducted & Radiated	BS EN/EN55014(CISPR32)	ClassⅠ: 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
Radiated Susceptibility	BS EN/EN61000-4-3	Level 3, 10V/m( 80MHz~2.7GHz ) Table 9, 9~28V/m( 385MHz~5.78GHz )
EFT/Burest	BS EN/EN61000-4-4	Level 3, 2KV
Surge	BS EN/EN61000-4-5	Level 4, 4KV/Line-FG; 2KV/Line-Line
Conducted	BS EN/EN61000-4-6	Level 3, 10V
Magnetic Field	BS EN/EN61000-4-8	Level 4, 30A/m
Voltage Dips and interruptions	BS EN/EN61000-4-11	＞95% dip 0.5 periods, 100% dip 1 periods, 30% dip 25 periods, ＞95% interruptions 250 periods

OTHERS

MTBF: 2928.9K hrs min. Telcordia SR-332 (Bellcore) ; 393.9K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 101.6*50.8* 25.4mm (L*W*H)
PACKING: 0.21Kg; 36pcs/10Kg/0.95CUFT

Test conditions and notes5

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 power supply is considered a component which will be installed into a final equipment. All the EMC tests are been 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

LOP-200-27 LOP-200 series — LOP-200 series

LOP-200-27 LOP-200 series (2) — LOP-200 series (2)

LOP-200-27 Derating Curve — Derating Curve

LOP-200-27 Output Derating VS Input Voltage — Output Derating VS Input Voltage

LOP-200-27 Installation Manual — Installation Manual

Typical applications

Industrial automation machinery/ control system
Security system
Mechanical and electrical equipment
Electronic instruments, equipments or apparatus
Network equipment
Telecom devices
Power sourcing equipment of PoE
Home automation
Medical devices

Downloads

Datasheet1

LOP-200-27 datasheetLOP_200_spec.pdf · 2026-09-02 edition PDF Download

FAQ

What output does the Mean Well LOP-200-27 provide?

The LOP-200-27 is a 200W open frame AC-DC power supply with a 27V DC output. Its rated output current is 5.3A with convection cooling, or 7.5A with 10.98 CFM forced air. This model is intended for applications that need a regulated 27V supply in a compact 4 inch by 2 inch form factor.

Is the LOP-200-27 suitable for space-constrained equipment?

Yes. This model uses a compact 101.6 x 50.8 x 25.4 mm package, which is the standard 4 inch by 2 inch footprint with a low-profile height. That makes it a practical option for OEM equipment, control assemblies, and other designs where vertical clearance is limited.

Can this power supply be used in medical or safety-critical equipment?

The LOP-200-27 carries approvals that include IEC/EN/UL 62368-1 and IEC/EN 60601-1 / ANSI/AAMI ES60601-1, and it is specified with 2 x MOPP isolation between primary and secondary. Buyers should still confirm that the full end product meets all system-level regulatory requirements. The certifications on this unit make it more versatile than a general-purpose open frame supply.

How does the LOP-200-27 handle cooling and full-power operation?

This model is rated for 140W with convection cooling and up to 200W when used with 10.98 CFM forced air. It also has a peak rating of 11.1A (299.7W) for 3 seconds. That gives more flexibility in equipment that sees short load surges or has active airflow available.

What input range does the Mean Well LOP-200-27 support?

The LOP-200-27 accepts a wide universal input range of 80 to 264VAC, and it also supports 113 to 370VDC input. It includes active power factor correction, with typical power factor above 0.95 at 230VAC and above 0.98 at 115VAC at full load. This wide input range helps support use across different regional mains systems.

Is the LOP-200-27 designed for harsh temperature or high-altitude environments?

Yes. Mean Well specifies an operating temperature range of -40°C to +80°C, subject to derating, and altitudes up to 5000 meters under IEC/EN/UL 62368-1 (4000 meters under 60601-1, 2000 meters under 61558). Those ratings make it a strong candidate for industrial equipment used in demanding environmental conditions.

What protection features are included on the LOP-200-27?

This power supply includes overload, overvoltage, and overtemperature protection. Overload protection is specified at 105 to 180% of rated output power, with hiccup mode after 3 seconds and automatic recovery after the fault is removed. These built-in protections help protect both the supply and the host equipment during abnormal operating conditions.

Payment & Security

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Model	Power	Voltage	Current
Mean Well LOP-200-54 200W 4"×2" Low Profile Open Frame Power Supply 54V 2.7A	145.8W	54V	2.7A	View
Mean Well LOP-200-48 200W 4"×2" Low Profile Open Frame Power Supply 48V 3A	144W	48V	3A	View
Mean Well LOP-200-36 200W 4"×2" Low Profile Open Frame Power Supply 36V 3.9A	140.4W	36V	3.9A	View
Mean Well LOP-200-24 200W 4"×2" Low Profile Open Frame Power Supply 24V 5.9A	141.6W	24V	5.9A	View
Mean Well LOP-200-18 200W 4"×2" Low Profile Open Frame Power Supply 18V 7.8A	140.4W	18V	7.8A	View
Mean Well LOP-200-15 200W 4"×2" Low Profile Open Frame Power Supply 15V 9.4A	141W	15V	9.4A	View
Mean Well LOP-200-12 200W 4"×2" Low Profile Open Frame Power Supply 12V 11.7A	140.4W	12V	11.7A	View

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