China-Based DIN Rail Power Supply Manufacturer
We design and manufacture standard and customized DIN rail power supplies for industrial automation, instrumentation, transportation, renewable energy, and building automation.
About SANMU POWER
SANMU POWER is a manufacturer of DIN rail-mounted power supplies, headquartered and producing in China. Our focus is on reliable, cost-effective power conversion for control panels, machinery, and automated systems.
We support both standard catalog products and customized solutions engineered around customer electrical, mechanical, and certification requirements.
- Headquarters & manufacturing: China
- Product focus: DIN rail power supplies, 15W – 960W+
- Manufacturing model: In-house SMT, assembly, and testing
- Engineering support for modified and custom designs
- Compliance: RoHS; CE marking on applicable models
Design · Manufacture · Test · Deliver
Full control from PCB assembly to final QC — all under one roof in our China facility.
Our Journey
Key milestones from founding to today.
Company Founded
SANMU POWER established in China, focusing on industrial power supply R&D and manufacturing.
First DIN Rail Series Launched
Released our initial 15–60W DIN rail power supply series for industrial automation customers.
Production Capacity Expanded
Expanded SMT and assembly lines; introduced automated ICT and burn-in testing equipment.
High-Power Series & Custom OEM
Launched 240–960W series; opened engineering channel for customized and branded OEM/ODM projects.
Today — Six Product Series
Six DIN rail series covering 15W to 960W+, serving customers across China and export markets.
Production Capabilities
Our China facility combines automated production with rigorous quality control at every stage.
SMT & PCB Assembly
Automated SMT lines for consistent placement accuracy on all PCB assemblies, including dual-side reflow.
Mechanical Assembly
Transformer winding, housing assembly, conformal coating, and final packaging on dedicated lines.
Testing & QC
ICT, burn-in, hi-pot, ripple, and full-load testing on 100% of finished units before shipment.
Custom Engineering
In-house electrical and mechanical engineering for modified designs, branding, and application-specific requirements.
Production Volume
Scalable capacity supporting both low-volume specialized orders and high-volume series production.
Process Control
Documented work instructions, incoming inspection, and traceability by lot and serial number.
DIN Rail Power Supply Series
Six product series covering a broad range of power ratings and applications.
Economy Series
15W – 100W
Cost-effective, general purpose
Standard Series
35W – 240W
Industrial automation
Industrial Series
120W – 480W
High reliability, wide temp.
High Power Series
480W – 960W+
Parallel operation support
Buffer Modules
24V DC
Power backup & bridging
Renewable Energy
PV & battery systems
MPPT charge control
Transportation
Rail / vehicle-rated
EN 50155 compliant
Custom / OEM
Tailored solutions
Modified or branded
Industries Served
Our power supplies operate in a wide range of industrial and commercial applications.
Industrial Automation
PLCs, sensors, actuators, control panels, conveyors, and robotic cells.
Instrumentation
Process control, test & measurement equipment, signal conditioning.
Transportation
Rail signaling, ticketing systems, vehicle-mounted electronics.
Renewable Energy
Solar PV monitoring, battery management, energy storage systems.
Building Automation
HVAC, access control, fire & security, smart building systems.
Water & Environment
Water treatment, pump stations, environmental monitoring stations.
From Components to Finished Product
Every unit goes through documented production and testing stages.
Incoming Inspection
Raw materials and key components verified against specifications.
SMT & Assembly
Automated placement, reflow, and mechanical assembly.
Production Testing
ICT, power-on, and parameter verification during assembly.
Finished QC
Full-load, burn-in, hi-pot, and visual inspection before packing.
Quality Assurance
Traceable, tested, and documented — at every production stage.
Incoming Inspection
Key components (transformers, capacitors, ICs) inspected and lot-traceable before use.
Production Testing
ICT, DC output, ripple & noise, and efficiency measured on the line.
Finished Product Testing
100% full-load, burn-in, hi-pot (3kV), and visual check prior to shipment.
Certificates
CE, RoHS on applicable models. Full certificate copies available on request — no claims without supporting documents.
Factory & Production Photos
SMT lines, assembly area, testing stations, and warehouse available for customer review and factory audits.
Test Reports
Sample test data including efficiency, ripple, surge, and thermal performance provided per model.
Our Teams
Experienced in-house teams across engineering, quality, and export sales.
Engineering Team
Power electronics engineers with experience in switch-mode power supply design, thermal management, and EMC optimization.
QC Team
Dedicated quality engineers and inspectors managing incoming inspection, in-process checks, and final product release.
Sales & Export Team
Multilingual sales team handling inquiries, technical support, and logistics coordination for international customers.
Ready to Discuss Your Power Supply Requirements?
Whether you need a standard catalog model or a customized solution, our team is ready to help.