MEAN WELL Power Supply ELG-300 Series Constant Current/Voltage LED Driver

Product Item : ELG-300 series
Category：LED Driver
Wattage: 300W
Input Voltage: 100 ~ 305VAC or 142 ~ 431VDC
Output Current: 12.5 ~ 22A
Output Voltage: 12 ~ 24V
Product description：ELG-300 series is a 30oW LED driver featuring with constant current and Constant voltage mode design.ELG-300 operates from 100~305VAC and offers CV mode or CC mode applications.
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ELG-300 Series - 300W CC+CV LED Driver with Active PFC, IP67, A-Type Potentiometer Adjustment

In Stock 5-Year Warranty CC + CV 300W Max IP67 Waterproof Active PFC A-Type Adjustment

				Key Performance at a Glance
			
						300W
					
						Max Power
					
						94%
					
						Peak Efficiency
					
						2
					
						Voltage Options
					
						IP67
					
						Outdoor Rated
					
						22A
					
						12V Current
					
						305V
					
						Max Input

Product Overview

The MEAN WELL ELG-300 series is a 300W AC-to-DC LED driver family designed for both constant-current (CC) and constant-voltage (CV) operation. It accepts universal 100~305VAC input (142~431VDC) and offers 12V and 24V output options, making it a flexible platform for high-power indoor and outdoor LED lighting systems.

With peak efficiency up to 94%, the ELG-300 uses a fanless design and operates at a case temperature of -40C to +85C under natural convection. The sealed metal enclosure carries an IP67 rating, and the 24V model is certified to UL8750 Type HL for use in hazardous location luminaires.

This series is available in A-Type only: output current and voltage can be adjusted through internal potentiometers. This gives lighting designers simple field-tuning capability without requiring external dimming controllers.

Standard protection includes over-current CC limiting, short-circuit hiccup, over-voltage restart, and over-temperature restart. The driver withstands 6KV line-to-ground and 4KV line-to-line surge, complies with global lighting safety and EMC standards, and is backed by a 5-year warranty.

Product Images

ELG-300 series LED driver wiring diagram

ELG-300 series LED driver dimension diagram

Technical Specifications

Output ratings for the ELG-300 series. All values measured at 230VAC, rated load, 25C unless noted.

Model	DC Voltage	Rated Current	Power (200~305V)	Power (100~180V)	CC Range	Efficiency	Voltage Accuracy
ELG-300-12A	12V	22A	264W	224.4W	10 ~ 12V	91%	+/-3.0%
ELG-300-24A	24V	12.5A	300W	255W	14.4 ~ 24V	94%	+/-2.0%

Version Type

Type	IP	Io/Vo Adjustment	Dimming	Type HL	Best For
A	IP67	Pot adjustable	None	24V only	High-power indoor/outdoor luminaires requiring current/voltage tuning

Input & Protection (All Versions)

Input Voltage Range	100~305VAC / 142~431VDC \| 47~63Hz
Active PFC / THD / AC Current	PF>=0.95 at 115V, PF>=0.93 at 230V, PF>=0.90 at 277V \| THD<10% (>=50% load at 115V/230V; >=75% load at 277V) \| 3A/115V, 1.6A/230V, 1.3A/277V
Inrush / Leakage / Hold-up	45A/230V cold start (1200us at 50% Ipeak, NEMA 410); 2 units (B-type breaker) or 4 units (C-type breaker) per 16A breaker \| <0.75mA/277V \| 10ms/230V, 10ms/115V at full load
Protection	Over-current: 95~108% CC limit, auto-recovery \| Short circuit: CC limit, auto-recovery \| OVP: restart (model-specific trip range) \| OTP: restart
Surge Immunity	Line-to-ground: 6KV \| Line-to-line: 4KV \| Light industrial per EN61547
Operating / Storage Temp	Tcase=-40~+85C (refer to derating curve) \| Storage -40~+80C \| Temp coefficient +/-0.03%/C (0~60C)
Vibration / Humidity	10~500Hz, 5G, 12min/cycle, X/Y/Z 72min each \| 20~95% RH non-condensing
Isolation	3.75KVac I/P-O/P, 2KVac I/P-FG, 1.5KVac O/P-FG
EMC Emission / Immunity	EN55015 Class C (>=50% load), EN61000-3-2/3-3, GB/T17743, GB17625.1, KN15 \| Immunity: EN61000-4-2/3/4/5/6/8/11, EN61547
Lifetime / MTBF / Size	>50,000 hours at Tcase<70C \| 1827.7K hrs min. (Telcordia SR-332) \| 246 x 77 x 39.5mm \| 1.45kg \| 9pcs/carton / 13.5kg

Safety Standards & Certifications

Safety Standards	UL8750 (Type HL for 24V only), CSA C22.2 No. 250.13-12, IEC/BS EN/EN/AS/NZS 61347-1/2-13 independent, BS EN/EN62384, EAC TP TC 004, BIS IS15885 (Part 2/Sec 13), GB/T19510.1/19510.213, KC61347-2-13 \| IP67
Withstand Voltage	I/P-O/P: 3.75KVAC \| I/P-FG: 2.0KVAC \| O/P-FG: 1.5KVAC
Insulation Resistance	I/P-O/P, I/P-FG, O/P-FG: >100M Ohms / 500VDC / 25C / 70% RH
EMC Emissions	BS EN/EN55015, BS EN/EN61000-3-2 Class C (>=50% load), BS EN/EN61000-3-3, GB/T17743, GB17625.1, KN15
EMC Immunity	BS EN/EN61000-4-2/3/4/5/6/8/11, BS EN/EN61547, light industrial surge immunity

Key Features

300W CC+CV Dual Mode -- High-Power LED Platform
Run in CC mode to drive LED strings directly, or CV mode to power LED strips, modules, or downstream DC-DC drivers. One platform covers a wide range of high-power luminaire designs.

A-Type Adjustment -- Internal Potentiometer Tuning
Output current and voltage can be fine-tuned via built-in potentiometers. Eliminates the need for external dimming controllers while giving installers flexibility to match LED string requirements.

IP67 Metal Housing -- Indoor and Outdoor Ready
Sealed aluminum enclosure rated IP67 against dust and water jets. Operates from -40C to +85C Tcase and passes 5G vibration, making it suitable for harsh environments.

Active PFC + Low THD
PF>=0.95 at 115V and THD<10% keep large installations compliant with lighting harmonics regulations. Reduces grid pollution and simplifies multi-unit breaker planning.

High Surge Immunity + Comprehensive Protection
Withstands 6KV line-to-ground and 4KV line-to-line surges. Protection includes CC current limiting, short-circuit hiccup, OVP restart, and OTP restart.

5-Year Warranty + Fanless Design
No fan means no noise and no moving parts. Backed by a 5-year warranty and >50,000-hour life at Tcase<70C.

Frequently Asked Questions

What is the difference between CC mode and CV mode on ELG-300?

In CC mode the driver maintains a constant current output while the voltage automatically adjusts within the model-specific CC range to match the LED string forward voltage. In CV mode the driver maintains a stable output voltage with a current limit, suitable for LED strips, modules, or loads that expect a fixed voltage bus.

Why does the power drop at 100~180VAC?

ELG-300 delivers full rated power at 200~305VAC but derates at 100~180VAC. The 12V model drops to 224.4W and the 24V model drops to 255W on low input. Size your load accordingly for 120V North American or 100V Japanese installations.

Is the ELG-300 series Type HL certified?

UL8750 Type HL certification applies to the 24V model (ELG-300-24A). The 12V model is not Type HL certified. For hazardous location luminaires, use the 24V version and ensure internal installation.

Does ELG-300 support dimming?

The ELG-300 series is A-Type only, which means it supports output current and voltage adjustment via internal potentiometers, but it does not offer external 0-10V, PWM, resistor, or DALI dimming interfaces. For dimming needs, consider the ELG-75/100/150/200/240 families which offer B-Type and DA-Type versions.