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Mean Well EPP-500-12 Power Supply 320W 12V 26.7A

Name: Mean Well EPP-500-12 Power Supply 320W 12V 26.7A
Brand: Mean Well
SKU: EPP-500-12
Price: 104.51 USD
Availability: InStock

5" x 3"high efficiency up to 93%economical PFCno load power consumption<0.5W

SKU EPP-500-12

$104.51 USD

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In stock

Overview

EPP-500-12 is the 12V output model of this series: typical efficiency 91%.

EPP-500 is a 500W highly reliable green PCB type power supply with a high power density on the 5" by 3" footprint. It accepts 80~264VAC input and offers various output voltages between 12V and 54V. The working efficiency is up to 94% and the extremely low no load power consumption is down below 0.5W. EPP-500 is able to be used for both ClassⅠ(with FG) and Class Ⅱ (no FG) system design. EPP-500 has complete protection functions; it is complied with the international safety regulations such as TUV BS EN/EN62368-1,TUV BS EN/EN60335-1,UL62368-1 and IEC62368-1. EPP-500 series serves as a high price-to-performance power supply solution for various industrial applications.

Features

5"×3" compact size
320W convection,500W force air
550W peak power (3sec.)
EMI for both ClassⅠ& Class Ⅱ configuration
-30~+70℃ wide range operating temperature
No load power consumption<0.5W by PS-ON control
High efficiency up to 94%
Protections: Short circuit / Overload / Over voltage / Over temperature
5Vdc standby output, 12Vdc fan supply, Power Good, Power Fail and remote sense
Operating altitude up to 5000 meters (Note.5)
LED indicator for power on
3 years warranty

Specifications

EPP-500-12Specifications from the official datasheet (2026-03-31 edition)

OUTPUT

DC VOLTAGE: 12V
CURRENT 25CFM: 41.6A
CURRENT Convection: 26.7A
RATED POWER 25CFM^Note.5: 499.2W
RATED POWER Convection^Note.5: 320.4W
PEAK POWER(3sec.): 550W
RIPPLE & NOISE (max.)^Note.2: 200mVp-p
VOLTAGE ADJ. RANGE (MAIN OUTPUT): 11.4~12.6V
VOLTAGE TOLERANCE^Note.3: ±3.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±1.0%
SETUP, RISE TIME: 1000ms, 30ms/230VAC 1500ms, 30ms/115VAC at full load
HOLD UP TIME (Typ.): 10ms/230VAC 10ms/115VAC at full load

INPUT

VOLTAGE RANGE^Note.4: 80 ~ 264VAC 113 ~ 370VDC
FREQUENCY RANGE: 47 ~ 63Hz
POWER FACTOR: PF>0.94/230VAC PF>0.98/115VAC at full load
EFFICIENCY (Typ.): 91%
AC CURRENT (Typ.): 5.8A/115VAC 2.9A/230VAC
INRUSH CURRENT (Typ.): COLD START 40A/115VAC 80A/230VAC
LEAKAGE CURRENT: <0.75mA / 240VAC

PROTECTION

OVERLOAD: 105 ~ 135% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 13.2 ~ 15.6V Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER TEMPERATURE: Protection type : Shut down o/p voltage, recovers automatically after temperature goes down

FUNCTION

5V STANDBY: 5Vsb : 5V@0.6A without fan, 1A with fan 25CFM ; tolerance ±2%, ripple : 120mVp-p(max.)
12V FAN SUPPLY: 12V@0.5A for driving a fan ; tolerance -15% ~+10% at main output 20% rated current (25CFM)
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.: -40 ~ +85℃
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 50℃)
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes
OPERATING ALTITUDE^Note.5: 5000 meters

SAFETY & EMC

SAFETY STANDARDS: UL62368-1, TUV BS EN/EN62368-1, BS EN/EN60335-1, IEC62368-1, EAC TP TC 004 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:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION: Parameter Standard Test Level

Conducted BS EN/EN55032(CISPR32), CNS13438 ClassⅠ: Class B , Class Ⅱ: Class A
Radiated BS EN/EN55032(CISPR32), CNS13438 Class A
Harmonic Current BS EN/EN61000-3-2 Class A
Voltage Flicker BS EN/EN61000-3-3
EMC IMMUNITY^{Note 6}: BS EN/EN55024, BS EN/EN61000-6-2

Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 3, 8KV air; Level 2, 4KV contact, criteria A
Radiated Susceptibility BS EN/EN61000-4-3 Level 3, criteria A
EFT/Burest BS EN/EN61000-4-4 Level 3, criteria A
Surge BS EN/EN61000-4-5 Level 4,2KV/L-N, criteria A
Conducted BS EN/EN61000-4-6 Level 3, criteria A
Magnetic Field BS EN/EN61000-4-8 Level 4, criteria A
Voltage Dips and interruptions BS EN/EN61000-4-11 ＞95% dip 0.5 periods, 30% dip 25 periods, ＞95% interruptions 250 periods

Parameter	Standard	Test Level
Conducted	BS EN/EN55032(CISPR32), CNS13438	ClassⅠ: Class B , Class Ⅱ: Class A
Radiated	BS EN/EN55032(CISPR32), CNS13438	Class A
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 3, 8KV air; Level 2, 4KV contact, criteria A
Radiated Susceptibility	BS EN/EN61000-4-3	Level 3, criteria A
EFT/Burest	BS EN/EN61000-4-4	Level 3, criteria A
Surge	BS EN/EN61000-4-5	Level 4,2KV/L-N, criteria A
Conducted	BS EN/EN61000-4-6	Level 3, criteria A
Magnetic Field	BS EN/EN61000-4-8	Level 4, criteria A
Voltage Dips and interruptions	BS EN/EN61000-4-11	＞95% dip 0.5 periods, 30% dip 25 periods, ＞95% interruptions 250 periods

OTHERS

MTBF: 1133.6K hrs min. Telcordia SR-332 (Bellcore) ; 137.1K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: L*W*H 127x76.2x41mm 5"x3"x1.61"inch
PACKING P.W.: 0.46Kg
PACKING Q'TY: 30pcs
PACKING G.W.: 14.8Kg
PACKING M'MENT: 0.96CUFT

Test conditions and notes6

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. All the ClassⅠ(with FG) EMC test are been executed by mounting the unit on a 360mm*360mm metal plate with 1mm of thickness. 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

EPP-500-12 E P P - 5 0 0 series — E P P - 5 0 0 series

EPP-500-12 Derating Curve — Derating Curve

EPP-500-12 Mechanical Specification — Mechanical Specification

Typical applications

Industrial automation machinery
Industrial control system
Mechanical and electrical equipment
Electronic instruments, equipments or apparatus
Power sourcing equipment of PoE

Downloads

Datasheet1

EPP-500-12 datasheetEPP-500-SPEC.PDF · 2026-03-31 edition PDF Download

Certificates9

Mean Well E183223 UL Certificate PDF Download

Mean Well 0147476-EAC Certificate PDF Download

Mean Well EPP-500-EMC Certificate PDF Download

Mean Well EPP-500-UK-dec Certificate PDF Download

Mean Well EPP-500-CE-dec Certificate PDF Download

Mean Well EPP-400-500-TUV(62368) Certificate PDF Download

Mean Well EPP-400-500-TUV(60335) Certificate PDF Download

Mean Well EPP-400-500-CB Certificate PDF Download

Mean Well EPP-400-500-CB(UL) Certificate PDF Download

Test reports1

Mean Well EPP-500-12 Test Report PDF Download

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the EPP-500-12 for a high-current 12V PLC, relay, or control cabinet load?

Yes, if the system needs constant 12V and the total current stays within 26.7A (320.4W) with convection cooling, or 41.6A (499.2W) with 25CFM forced-air cooling, which supports larger 12V control loads.

Is the EPP-500-12 a good fit for a 12V embedded computer or industrial PC with multiple peripherals?

It can be a fit for a 12V embedded or industrial computing platform when the combined load remains at or below 26.7A with convection cooling, or 41.6A with 25CFM forced air. The available output power is 320.4W (convection) or 499.2W (25CFM).

Can this 12V supply be used for 12V automation accessories with different AC input regions?

Yes, the input range is 80-264VAC, which supports use across a wide AC input span. On the DC side, it provides constant 12V output up to 26.7A and 320.4W with convection cooling, or 41.6A and 499.2W with 25CFM forced air.

How does the EPP-500-12 compare to other 12V models in the EPP series?

Within the EPP-500 series on this datasheet, the EPP-500-12 is the 12V version at 26.7A and 320.4W with convection cooling, or 41.6A and 499.2W with 25CFM forced air. Other EPP-500 outputs cover 15V, 18V, 24V, 27V, 36V, 48V, and 54V, all at about 320W convection and about 500W forced air.

Can the EPP-500-12 be used in hot or cold industrial environments?

The operating temperature range is -30°C to +70°C, with output derating at higher ambient temperatures per the derating curve. No IP rating is provided in the listed specs, so the product data does not position it as sealed for outdoor exposure.

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