☎ (888) 228 9138

Over 15 years experience of providing support of MEAN WELL Power Supplies

Image shown is a representation only. Exact specifications should be obtained from the product datasheet.

Mean Well

Mean Well EPP-300-48 Power Supply 200W 48V 4.17A

5" x 3"high efficiency up to 93%economical PFCno load power consumption<0.5W
SKU EPP-300-48
$73.08 USD
Shipping calculated at checkout.
In stock
|

Overview

EPP-300-48 is the 48V output model of this series: typical efficiency 93%.

Features

  • Universal AC input / Full range
  • Built-in active PFC function
  • High efficiency up to 93%
  • Withstand 300VAC surge input for 5 seconds
  • Protections: Short circuit / Overload / Over voltage / Over temperature
  • Built-in 12V/0.5A auxiliary output
  • 5"x3" compact size
  • Free air convection for 200W and 300W with 20.5 CFM forced air
  • With power good and fail signal output
  • Built-in remote sense function
  • No load power consumption under 0.5W by PS-ON control
  • Standby 5V@1A with fan, @ 0.6A without fan
  • Operating altitude up to 5000 meters
  • 3 years warranty

Specifications

EPP-300-48Specifications from the official datasheet (2026-03-31 edition)

OUTPUT

DC VOLTAGE
48V
RATED CURRENT (20.5CFM)
6.25A
CURRENT RANGE (convection)
0 ~ 4.17A
CURRENT RANGE (20.5CFM)
0 ~ 6.25A
RATED POWER (convection)
200.2W
RATED POWER (20.5CFM)
300W
RIPPLE & NOISE (max.)Note.2
250mVp-p
VOLTAGE ADJ. RANGE
Main output:45.6 ~ 50.4V
VOLTAGE TOLERANCENote.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 RANGENote.5
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 40A/115VAC 80A/230VAC
LEAKAGE CURRENT
<2mA/240VAC

PROTECTION

OVERLOAD
105 ~ 135% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE
52 ~ 59.5V Protection type : Shut down o/p voltage, re-power on to recover
OVER TEMPERATURE
115℃±5℃ (TSW1) detect on heatsink of power transistor 115±5℃ (12V,15V),100±5℃ (24V,27V,48V) (TSW2) detect on heatsink of output diode 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.)
AUXILIARY POWER (AUX)
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
TEMP. COEFFICIENT
±0.03%/℃ (0 ~ 50℃ )
OPERATING ALTITUDENote.7
5000 meters
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, 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, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION
Compliance to BS EN/EN55032 (CISPR32),Conduction Class B,Radiation Class B;BS EN/EN61000-3-2,3;EAC TP TC 020
EMC IMMUNITY
Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, BS EN/EN55035, BS EN/EN60601-1-2, EAC TP TC 020

OTHERS

MTBF
1490.1K hrs min. Telcordia SR-332 (Bellcore) ; 160.3K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
127*76.2*35mm (L*W*H)
PACKING
0.37 Kg; 36pcs/14.3Kg/0.96CUFT;
Test conditions and notes7
  1. 1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
  2. 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. 3. Tolerance : includes set up tolerance, line regulation and load regulation.
  4. 4. 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 )
  5. 5. Derating may be needed under low input voltages. Please check the derating curve for more details.
  6. 6. Heat Sink HS1,HS2 can not be shorted.
  7. 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

EPP-300-48 Mechanical Specification
Mechanical Specification
EPP-300-48 Block Diagram
Block Diagram
EPP-300-48 Derating Curve
Derating Curve

Downloads

FAQ

Can I use the EPP-300-48 for a 48V industrial control or automation system?

Yes, if the system requires constant-voltage 48V DC and the total load stays within 4.17A and 200.2W with convection cooling, or 6.25A and 300W with 20.5CFM forced airflow. That makes it suitable for industrial or automation assemblies built around a 48V DC bus rather than lower-voltage control power.

Is the EPP-300-48 a good fit for 48V telecom or network equipment in an equipment cabinet?

It can fit cabinet-based IT or telecom equipment that is specified for 48V constant-voltage input and does not exceed 4.17A with convection cooling, or 6.25A with 20.5CFM airflow. The wide 90-264VAC input also supports deployment across different AC supply ranges.

Can this power supply run multiple 48V embedded or industrial devices from one source?

It can, as long as all connected 48V constant-voltage loads together stay at or below 4.17A and 200.2W with convection cooling (6.25A and 300W with 20.5CFM airflow). For grouped embedded or industrial devices, load budgeting should be based on the full combined 48V draw, not just one device.

Is the EPP-300-48 suitable for 48V motion-control or automation subsystems?

It is appropriate for 48V constant-voltage automation subsystems whose steady power demand fits within 200.2W convection-cooled, or 300W with 20.5CFM airflow. The key match points are the 48V output and the available 4.17A (convection) or 6.25A (20.5CFM) current capacity.

Can the EPP-300-48 be used outdoors or in harsh temperature conditions?

The listed operating temperature range is -30°C to +70°C, with output derating at higher temperatures per the derating curve. However, no IP rating is provided in the product data here, so outdoor or washdown suitability should not be assumed from these specs alone.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bizum
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • MB WAY
  • PayPal
  • Satispay
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

{ "id":8655372255552, "variants" :[{ "context":"default", "variant_id": 46624512213312, "sku":"EPP-300-48", "inventory_qty" : 6, "customer" :true, "custom_html" :"\u003cdiv class=\"price\"\u003e\n \u003cdiv class=\"price__default\"\u003e\n \u003cstrong class=\"price__current\"\u003e$73.08\u003c\/strong\u003e\n \u003cs class=\"price__was\"\u003e\u003c\/s\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"unit-price relative\" hidden\u003e\u003cspan class=\"visually-hidden\"\u003eUnit price\u003c\/span\u003e\u003cspan class=\"unit-price__price\"\u003e\u003c\/span\u003e\u003cspan class=\"unit-price__separator\"\u003e \/ \u003c\/span\u003e\u003cspan class=\"unit-price__unit\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n \u003cdiv class=\"price__no-variant\" hidden\u003e\n \u003cstrong class=\"price__current\"\u003eUnavailable\u003c\/strong\u003e\n \u003c\/div\u003e\n\n \u003c\/div\u003e", "volume_html" :"\u003cvolume-pricing class=\"parent-display inside_product_form\" id=\"volume-pricing-main\" \u003e\u003c\/volume-pricing\u003e" } ] }
Mean Well EPP-300-48 Power Supply 200W 48V 4.17A
Mean Well

Mean Well EPP-300-48 Power Supply 200W 48V 4.17A

$73.08 USD

EPP-300-48 is the 48V output model of this series: typical efficiency 93%.

Features

  • Universal AC input / Full range
  • Built-in active PFC function
  • High efficiency up to 93%
  • Withstand 300VAC surge input for 5 seconds
  • Protections: Short circuit / Overload / Over voltage / Over temperature
  • Built-in 12V/0.5A auxiliary output
  • 5"x3" compact size
  • Free air convection for 200W and 300W with 20.5 CFM forced air
  • With power good and fail signal output
  • Built-in remote sense function
  • No load power consumption under 0.5W by PS-ON control
  • Standby 5V@1A with fan, @ 0.6A without fan
  • Operating altitude up to 5000 meters
  • 3 years warranty
View product

  • Call us

    (888) 228 9138

  • Email us

    contact@wellforces.com

  • Business Hours

    Mon-Fri
    EST 9:00am-5:30pm

  • Wholesale and Trade Account

    Let's grow together
Back to top