Power Supply Units For Din Rail

Power Supply Units for DIN Rail

DIN-rail power modules for converting, distributing, and redundantly supplying control and auxiliary power in protection, automation, switchgear, and high-voltage control cabinets, with configurations for low-voltage auxiliary loads, high-voltage control circuits, and dual-supply isolation.

Product Capability

A cabinet-level power platform that combines auxiliary DC supply, control-power conversion, and redundant power isolation for different secondary-circuit load levels.

Auxiliary power conversion: PSMU Series high-frequency switching power supplies provide stable DC auxiliary power for field instruments, communication devices, alarm units, IEDs, meters, and other cabinet electronics.
Control-circuit power supply: PSMC1 Series is intended for higher-voltage operating and control-power applications, supporting control-circuit supply tasks where 110 VDC or 220 VDC system levels are commonly used.
Redundant supply isolation: PSMU-ZH-POWER provides dual-source parallel isolation for two same-parameter power sources, helping build a clearer redundant supply path without directly hard-paralleling the sources.
Multiple power-capacity configurations: the PSMU platform is available in different output-power versions so designers can match the supply to the actual auxiliary-load capacity instead of oversizing one universal module.
Power-system cabinet integration: the products use DIN-rail installation and metal enclosed structures suitable for standardized assembly in protection panels, LCCs, switchgear control compartments, automation cabinets, and equipment control boxes.
Support for mixed cabinet loads: the product family can cover low-voltage electronics as well as control and operation circuits, allowing power architecture to be divided by load level and function.
Application-oriented selection: input type, output voltage, rated power, transient-load requirement, alarm/status output, redundancy method, and terminal configuration are selected according to the project circuit and final order code.
Designed for demanding electrical environments: ODES positions the platform for power-system and industrial control applications where stable supply and anti-interference performance are important; final EMC and environmental ratings must be confirmed by the selected model manual.

Customer Value

Builds a clearer and more reliable cabinet power architecture by matching each load class with the appropriate supply, conversion, or redundancy module.

Simplify cabinet power design by separating auxiliary electronics, control circuits, and redundant supply functions into dedicated DIN-rail modules rather than relying on improvised conversion and distribution arrangements.
Reduce unnecessary intermediate conversion stages when a project requires a defined control-voltage level, helping lower wiring complexity and the number of potential failure points.
Improve supply continuity by using PSMU-ZH-POWER to isolate two equivalent power sources in a redundant parallel arrangement, avoiding direct source-to-source interaction.
Match power capacity to the real load by selecting PSMU variants according to connected devices, steady-state power, startup current, and design margin.
Support standardized cabinet production through DIN-rail mounting, consistent terminal access, and modular replacement, making repeated project designs easier to manufacture and maintain.
Provide a practical power source for intelligent field devices such as RS485 hubs, digital density meters, alarm modules, meters, and other 24 VDC auxiliary loads in smart substations and switchgear control systems.
Improve engineering clarity by defining input source, output level, load type, redundancy architecture, and status/alarm requirements as explicit selection items before ordering.

Product Series

Product series are configured according to users' usage and configuration preferences.

PSMU Series

Auxiliary switching power supply

High-frequency DIN-rail power supply platform for stable auxiliary DC power. ODES materials identify 24 VDC and 48 VDC as mainstream output levels and describe multiple power-capacity versions for different cabinet loads.

PSMU-ZH-POWER

Dual-source parallel isolation

DIN-rail redundancy / isolation module used to combine two same-parameter supply paths into one load-side supply path through diode isolation, supporting redundant auxiliary-power architectures.

PSMC1 Series

Control / operating power supply

DIN-rail control power supply for higher-voltage control and operating circuits. It is used in cabinet power architectures associated with 110 VDC / 220 VDC control levels and loads such as control circuits, relay coils, and breaker-related auxiliary functions.

View technical parameters by product series.

PSMU Series - Auxiliary Switching Power Supply

Parameter(PSMU)	Data(PSMU)	Remarks(PSMU)
Product function	High-frequency switching auxiliary power supply	For automation and secondary-circuit auxiliary loads.
Typical output voltage	24 VDC / 48 VDC	ODES product-capability materials identify these as mainstream DC output levels; other variants must be confirmed by order code.
Input type	AC/DC or DC/DC, depending on configuration	Final input range and polarity requirements must follow the selected model.
Rated output power	Multiple power ratings available	Select by connected load, startup current, continuous duty, and engineering margin.
Typical loads	IEDs, meters, RS485 hubs, alarm modules, sensors and field intelligent devices	PSMU is specifically referenced as the 24 VDC source in ODES field-device communication solutions.
Output stability	Regulated DC output	Exact regulation, ripple, efficiency, and dynamic-response figures are model dependent.
Status indication	Local power / operating indication	Confirm exact LED and alarm-contact configuration by model.
Protection functions	Model dependent	Confirm short-circuit, over-current, over-voltage, over-temperature, and recovery behavior in the latest manual.
Installation	DIN rail	Designed for cabinet integration.
Operating environment	Power-system / industrial control environment	Exact operating temperature, altitude, humidity, and derating curve must be confirmed by model.
EMC performance	Power-system-oriented anti-interference design	Confirm test level and applicable standards in the latest product manual / type-test report.
Selection basis	Output voltage + rated power + load characteristic + input source	Transient demand and cable voltage drop should also be considered.

PSMU-ZH-POWER - Dual-Source Parallel Isolation Module

Parameter(PSMU-ZH-POWER)	Data(PSMU-ZH-POWER)	Remarks(PSMU-ZH-POWER)
Product function	Dual-source parallel isolation / redundancy	Used to build a redundant auxiliary-power path from two equivalent supplies.
Input architecture	Two power inputs	The two sources should be of compatible / same nominal voltage and suitable for the intended redundancy arrangement.
Output architecture	One load-side output	Provides an isolated OR-ing path instead of direct hard paralleling.
Isolation method	Diode parallel isolation	ODES solution materials identify it as a diode-isolated parallel supply solution.
Voltage conversion	No primary voltage-conversion role	It is a redundancy / isolation element; source and load voltage compatibility must be checked.
Typical application	Redundant DC auxiliary supply	Suitable for IEDs, meters, communication modules, alarm devices, and similar cabinet electronics when redundancy is required.
Current / power capacity	Model dependent	Size for full load current, transient demand, and thermal conditions.
Voltage drop	Diode-path dependent	Allow for forward-voltage drop when checking minimum load-side voltage.
Installation	DIN rail	For standardized cabinet assembly.
Selection basis	Nominal voltage + maximum load current + redundancy method + allowable voltage drop	Check source compatibility, protection coordination, and allowable voltage drop.

PSMC1 Series - Control / Operating Power Supply

Parameter(PSMC1)	Data(PSMC1)	Remarks(PSMC1)
Product function	Control / operating power supply	For higher-voltage control and auxiliary circuits in power-system equipment.
Typical control-voltage level	110 VDC / 220 VDC applications	ODES cabinet solution materials associate PSMC1 with DC110V / DC220V control-power architectures.
Output configuration	Model / order-code dependent	Confirm exact 110 VDC or 220 VDC output and allowable tolerance before ordering.
Input source	Project / model dependent	May be configured according to the available cabinet AC or DC source; exact input range must follow the model manual.
Rated power	Model dependent	Select according to continuous load plus required transient / startup capability.
Typical loads	Control circuits, relay coils, breaker-related auxiliary circuits and other operating loads	Load profile must be checked, especially for inductive or high-inrush equipment.
Regulation / protection	Model dependent	Confirm regulation, ripple, short-circuit / over-current, over-voltage, thermal behavior, and any status / alarm contacts.
Transient load capability	Selection critical	Verify peak current, duration, recovery, and voltage dip for breaker or energy-storage duties.
Installation	DIN rail	Suitable for protection, switchgear and LCC cabinet integration.
Selection basis	Input source + required output voltage + continuous power + transient load + alarm requirement	Use actual coil / motor data for breaker-related loads.

Resources & FAQ

Datatype - Download
Product Catalog
Installation Drawing
Datasheet
Wiring Diagram
Product Certification Report

Frequently Asked Questions

Q1. How should I choose between PSMU and PSMC1?

Start with the load voltage and load type. PSMU is the preferred platform for low-voltage auxiliary electronics such as 24 VDC / 48 VDC field devices, communication modules, meters, and alarm equipment. PSMC1 is intended for higher-voltage control / operating power duties associated with 110 VDC or 220 VDC control architectures. Final selection must also consider continuous power, inrush current, duty cycle, input source, and required status or alarm outputs.

Q2. Can PSMU-ZH-POWER be used as a voltage converter or automatic transfer switch?

Treat PSMU-ZH-POWER as a dual-source parallel isolation / redundancy module rather than a voltage converter. Use electrically compatible sources, allow for diode voltage drop, and verify load current and protection coordination. If source-priority logic or defined transfer thresholds are required, use a dedicated automatic transfer product.

Q3. What information should be confirmed before ordering a DIN-rail power supply?

Confirm input source, DC output voltage, continuous power, startup / inrush current, load type, allowable voltage dip, redundancy method, status-contact requirement, ambient conditions, installation space, terminals, and EMC / certification needs. For breaker or energy-storage loads, provide actual coil or motor data so transient capability can be verified.

The current ODES webpage shows three representative product forms: PSMU, PSMU-ZH-POWER, and PSMC1. ODES solution materials position them respectively as auxiliary supply, dual-source diode-isolated redundancy, and control-power products. Before publication or ordering, confirm the latest manual and order code for exact electrical ratings, transient capacity, protection, dimensions, environmental limits, EMC levels, and certification scope.