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Mean Well ERP-350-12 Switching Power Supply 350W 12V 26.7A

Name: Mean Well ERP-350-12 Switching Power Supply 350W 12V 26.7A
Brand: Mean Well
SKU: ERP-350-12
Price: 44.69 USD
Availability: InStock

design against rain splashfanless designeconomical

SKU ERP-350-12

$44.69 USD

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In stock

Overview

ERP-350-12 is the 12V output model of this series: rated current 26.7A, rated power 320.4W, typical efficiency 87%.

ERP-350 series is a 350W single output enclosed type AC/DC power supply . It adopts an aluminum case and the interior is semi-potted, protecting the internal electronic components from rain splash and dust. With the complete protection functions, ERP-350 is suitable for the applications such as outdoor LED channel letters, commercial display , etc.

Features

AC input 180~264VAC
Withstand 300VAC surge input for 5 seconds
Design against rain splash
Protections: Short circuit / Overload / Over voltage/ Over temperature
Cooling by free air convection
LED indicator for power on
Low cost,high reliability
100% full load burn-in test
3 years warranty

Specifications

ERP-350-12Specifications from the official datasheet (2025-12-12 edition)

OUTPUT

DC VOLTAGE: 12V
RATED CURRENT: 26.7A
CURRENT RANGE: 0 ~ 26.7A
RATED POWER: 320.4W
RIPPLE & NOISE (max.)^Note.2: 150mVp-p
VOLTAGE ADJ. RANGE: 10.8 ~ 13.2V
VOLTAGE TOLERANCE^Note.3: ±1.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±0.5%
SETUP, RISE TIME: 1500ms, 200ms/230VAC
HOLD UP TIME (Typ.): 20ms/230VAC

INPUT

VOLTAGE RANGE: 180 ~ 264VAC 254 ~ 370VDC
FREQUENCY RANGE: 47 ~ 63Hz
EFFICIENCY (Typ.): 87%
AC CURRENT (Typ.): 4A/230VAC
INRUSH CURRENT (Typ.): 90A/230VAC
LEAKAGE CURRENT: <1mA / 240VAC

PROTECTION

OVER LOAD: 110 ~ 140% rated output power 12-36V Hiccup mode, recovers automatically after fault condition is removed 48V Shut down and latch off o/p voltage, re-power on to recover
OVER VOLTAGE: 13.8 ~ 16.2V 12-36V Hiccup mode, recovers automatically after fault condition is removed 48V Shut down and latch off o/p voltage, re-power on to recover
OVER TEMPERATURE: 12-36V Shut down O/P voltage, recovers automatically after temperature goes down 48V Shut down and latch off o/p voltage, re-power on to recover

ENVIRONMENT

WORKING TEMP.: -30 ~ +60℃ (Refer to output load derating curve)
WORKING HUMIDITY: 20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -30 ~ +85℃, 10 ~ 95% RH
TEMP. COEFFICIENT: ±0.05%/℃ (0 ~ 50℃)
VIBRATION: 10 ~ 500Hz, 3G 10min./1cycle, 60min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDS: UL 62368-1,IEC 62368-1,GB 4943.1,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: Refer to EN55022 (CISPR22) class A, EAC TP TC 020
EMC IMMUNITY: Refer to EN61000-4-5;light industry level, EAC TP TC 020

OTHERS

MTBF: 2396.7K hrs min. Telcordia SR-332 (Bellcore) 321Khrs min. MIL-HDBK-217F (25℃)
DIMENSION: 220.4*130*48mm (L*W*H)
PACKING: 0.9Kg; 9 pcs/11Kg/0.63CUFT

Test conditions and notes4

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 0.1uf & 47uf parallel capacitor.
3. Tolerance : includes set up tolerance, line regulation and load regulation.
4. 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

ERP-350-12 Block Diagram — Block Diagram

ERP-350-12 Mechanical Specification — Mechanical Specification

Typical applications

LED decoration/signage
LED channel letters
LED display

Downloads

Certificates3

EMC Certificate (ELG-75)(EN) PDF Download

UL Certificate (ERP-350)(EN) PDF Download

CB Certificate (ERP-350)(EN) PDF Download

Test reports1

Test Report (ERP-350-12)(EN) PDF Download

FAQ

Can I use the ERP-350-12 for a 12V industrial control or automation load?

Yes, if the load requires 12V constant voltage and stays within 26.7A and 320.4W. That makes it suitable for 12V industrial and automation equipment that needs a fixed-voltage AC-DC power supply.

Is the ERP-350-12 appropriate for 12V embedded systems or industrial electronics?

Yes. It provides a 12V constant voltage output with up to 26.7A and 320.4W, which fits 12V embedded and industrial electronic loads within that power envelope. Note that the 12V model has its own, steeper output derating curve at high ambient temperatures.

Can the ERP-350-12 power 12V monitoring, communications, or control equipment in a cabinet?

It can be used for 12V cabinet-based equipment that operates on constant voltage and fits within 320.4W and 26.7A. The AC input range of 180-264VAC suits equipment cabinets fed from 230VAC-class mains.

Is this a fit for 12V systems where a compact power supply is preferred?

Yes, if the system needs 12V constant voltage and the required load is no more than 26.7A or 320.4W. The unit measures 220.4 × 130 × 48 mm.

Can the ERP-350-12 be used outdoors or in splash-prone environments?

The datasheet states that the ERP-350 is designed for outdoor application but should be installed in a sheltered place, and its operating temperature range is -30°C to +60°C with output load derating. However, no IP rating is provided in these specs, so its protection against water is not explicitly defined.

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