Mean Well EDR-120-24 - User Manual

User Manual
 Type DIN rail power supply

EDR-120-24 INPUT : 100-240VAC 2.6A 50
/
60Hz OUTPUT : 24V 5A
NDR-120-48 INPUT : 100-240VAC 2.6A 50
/
60Hz OUTPUT : 48V 2.5A
NDR-240-48 INPUT : 100-240VAC 2.8A 50
/
60Hz OUTPUT : 48V 5A
 Introduction
NDR is a DIN rail power supply series with an economical price and slim design. Like other Mean Well’s DIN series,
they can be mounted on a TS35 Standard DIN rail.
 Installation
（ 1 ） Always allow good ventilation clearances, 5mm left and right, 40mm above and 20mm below,
around the unit in use to prevent it from overheating. Also a 10-15 cm clearance must be kept when the
adjacent device is a heat source.
（ 2 ） The appropriate mounting orientation for the unit is vertical, the input terminals at the bottom and
output on the top. Mounting orientations other than that, such as upside down, horizontal, or table-
top mounting, is not allowed.
Use copper wire only, and recommended wires are shown as below.
Make sure that all strands of each stranded wire enter the terminal connection and the screw
terminals are securely fixed to prevent poor contact. If the power supply possesses multi-output
terminals, please make sure each contact is connected to wires to prevent too much current stress on
a single contact.
AWG 18 16 14 12
Rated Current of
Equipment (Amp)
7A 10A 15A 20A
Cross-section of Lead(mm
2
)
0.8 1.3 2.1 3.3
Note:
Current each wire carries should be de-rated to 80% of the current suggested above when using 5 or more
wires connected to the unit.

Summary

Product Types and Introduction

Product Types

Lists the available Mean Well DIN rail power supply models like EDR and NDR series.

Introduction to NDR Series

Brief overview of the NDR DIN rail power supply series and its mounting capability on TS35 rail.

Installation and Wiring Guidelines

Ventilation and Clearances

Specifies required air gaps for heat dissipation and preventing overheating.

Mounting Orientation

Details the correct vertical mounting and prohibits other orientations.

Wiring Recommendations

Guidance on using copper wire, stranded wire connection, and current derating.

Terminal Torque Settings

Recommended torque values for input/output terminals to ensure secure connections.

Fuse and Circuit Breaker Selection

Provides suggested fuse ratings and maximum PSU connections for circuit breakers at 230V.

DIN Rail Mounting Procedure

Step-by-step guide for securely attaching the unit to a TS35 DIN rail.

Safety Precautions and Warnings

Electrical Shock and Hazard Warnings

Advises on risks of electrical shock, arcs, and burn hazards, and handling by qualified technicians.

Fire and Short Circuit Prevention

Instructions to protect openings from foreign objects and liquids to prevent fire hazards.

Environmental Installation Conditions

Guidance on suitable environments (Pollution Degree 2) and avoiding high moisture or heat.

Protective Earth Connection

Emphasizes the necessity of connecting the FG terminal to PE (Protective Earth).

Operational Limits and Disconnection

Warning to not exceed rated output values and to disconnect power before any work.

Fuse Replacement

Instructs to use only the same type and rating of fuse for continued fire protection.

Manufacturer and Compliance Information

Manufacturer and Importer Details

Provides contact information for MEAN WELL ENTERPRISES CO., LTD. and ASSMANN Electronic GmbH.

China RoHS Conformity

Declaration of conformity to China RoHS administrative measures for hazardous substances.

Hazardous Substances List

Table detailing the presence of hazardous substances in product components according to standards.

Mean Well EDR-120-24 Specifications

General

Output power	120 W
Input voltage	90 - 264 V
Output current	5 A
Output voltage	24 V
Sustainability certificates	RoHS
Quantity per pack	20 pc(s)

Weight and Dimensions

Depth	113.5 mm
Width	40 mm
Height	125.2 mm
Weight	550 g