For system integrators, panel builders, and electrical engineers, the control cabinet is prime real estate. Every millimeter of DIN rail space is heavily contested by PLCs, relays, contactors, and motor drives. In these high-density environments, selecting the right industrial DIN rail power supply is not just a matter of matching voltage and wattage—it is a strategic decision involving thermal management, mechanical footprint, and long-term reliability.
The TPS Elektronik series of ultra-slim, single-phase DIN rail power supplies is engineered specifically to address these challenges. Offering a robust 24V DIN rail power supply solution, our units combine high-efficiency power conversion with an incredibly compact form factor. Whether you are powering sensitive factory automation sensors or heavy-duty electromechanical relays, our power supplies ensure your control panels operate flawlessly under the most demanding industrial conditions.
Explore our full range of Industrial DIN Rail Power Supplies →
1. The space challenge: Why a slim DIN rail power supply matters
Modern industrial control panels are shrinking. As machine footprints become more compact, the electrical enclosures that drive them must follow suit. Traditional, bulky power supplies consume excessive space on the mounting rail, forcing panel builders to use larger, more expensive cabinets or compromise on component spacing, which negatively impacts thermal convection.
A slim DIN rail power supply solves this critical issue. By utilizing advanced switching topologies and high-frequency magnetics, TPS Elektronik has drastically reduced the width of our power units. For instance, our lower-wattage models (like the TPS010-GP24V 10W unit) feature an ultra-narrow profile that frees up valuable rail space for additional I/O modules or safety relays.
Furthermore, a narrower profile improves the overall airflow within the control cabinet DIN rail power supply setup. Better natural convection cooling extends the lifespan of not only the power supply itself but also the adjacent sensitive electronic components.
2. Electrical performance: Efficiency, ripple, and hold-up time
An industrial grade DIN rail power supply must deliver pristine DC power regardless of AC mains fluctuations. Our single-phase units accept a wide universal input range (typically 85-264 VAC), making them suitable for global deployment without the need for manual voltage selector switches.
High Efficiency and Active PFC
Efficiency is a critical metric. Our advanced models feature efficiencies exceeding 90%. High efficiency means less electrical energy is converted into waste heat, which is vital for enclosed panel environments. Additionally, higher wattage models incorporate Active Power Factor Correction (PFC) to minimize reactive power and comply with harmonic current emission standards (EN 61000-3-2).
Low Ripple and Noise
When acting as a DIN rail power supply for sensors or analog measurement devices, low ripple and noise are non-negotiable. High-frequency switching noise can interfere with 4-20mA signals or low-voltage digital logic. TPS power supplies utilize premium output filtering capacitors to ensure a clean, stable 24V DC output, typically keeping ripple below 100mVp-p.
Hold-Up Time for PLCs
In industrial environments, brief AC mains dips or brownouts are common. Our power supplies are designed with sufficient bulk capacitance to provide a hold-up time of at least 20ms at full load. This ensures that PLCs and machine controllers have enough time to save critical state data and execute safe shutdown procedures before the DC rail collapses.
3. Mechanical integration: 35mm DIN rail and shock resistance
The physical installation of a panel mount DIN rail power supply must be fast, secure, and reliable. Our units are designed for tool-less snap-on mounting onto standard TS35/7.5 or TS35/15 DIN rails. The robust mounting brackets ensure that the unit remains firmly in place, even when heavy gauge wires are connected to the terminals.
Industrial environments are rarely static. Power supplies mounted inside CNC machines, stamping presses, or automated guided vehicles (AGVs) are subjected to constant mechanical stress. A standard commercial power supply will quickly fail under these conditions due to cracked solder joints or component fatigue.
To combat this, our units are engineered for high DIN rail power supply shock vibration tolerance. Heavy components like transformers and large electrolytic capacitors are secured with specialized industrial adhesives, and the PCB layout is optimized to prevent resonant frequencies from causing mechanical failure. This ruggedization ensures continuous operation in the harshest manufacturing environments.
For detailed wiring instructions and spacing guidelines, refer to our DIN rail power supply installation and wiring guide.
4. Applications: From sensors to machine automation
The versatility of the 24V DC rail makes it the undisputed standard in industrial automation. However, different loads require different power supply characteristics.
Machine Automation and Motor Drives
A machine automation DIN rail power supply often needs to handle inductive loads, such as DC motors, solenoids, and contactors. These components can draw significant inrush currents upon startup. Our power supplies, such as the TPS100 DR-Plus series, are designed with power boost capabilities, allowing them to deliver up to 150% or 170% of their rated current for short durations to reliably start heavy loads without triggering overcurrent protection (OCP).
Sensors and Instrumentation
Conversely, when used as a DIN rail power supply for sensors, the focus shifts to voltage stability and noise suppression. The adjustable output voltage feature (typically 24V to 28V) allows panel builders to compensate for voltage drops over long cable runs, ensuring that remote sensors receive the exact voltage required for accurate readings.
5. Compliance: CE marked and UL 60950 standards
Global market access requires strict adherence to international safety and EMC standards. Using non-compliant components in a control panel can lead to failed inspections, project delays, and severe liability issues.
Every TPS Elektronik unit is a fully CE marked DIN rail power supply, ensuring compliance with the European Low Voltage Directive (LVD) and EMC Directive. Furthermore, our designs align with the rigorous safety requirements of the UL 60950 DIN rail power supply standards (and the newer IEC/EN/UL 62368-1 standards for IT and industrial equipment).
Key safety features integrated into every unit include:
- Overvoltage Protection (OVP): Protects sensitive downstream PLCs from voltage spikes.
- Overcurrent/Short Circuit Protection (OCP/SCP): Safely limits current during a fault and automatically recovers when the fault is removed (hiccup mode or constant current limiting).
- Overtemperature Protection (OTP): Shuts down the unit if internal temperatures exceed safe limits due to blocked airflow or extreme ambient heat.
For authoritative information on international electrotechnical standards, you can refer to the International Electrotechnical Commission (IEC).
6. Product selection guide: 12V and 24V variants
TPS Elektronik offers a comprehensive portfolio to match your exact power requirements. Over-specifying a power supply wastes money and cabinet space, while under-specifying leads to reliability issues.
The 24V DC Series (Industry Standard)
- TPS010-GP24V (10W): Ultra-compact, ideal for single sensors or small IoT gateways.
- TPS030-GP24V (30W): Perfect for small junction boxes and remote I/O stations. Read more about the TPS030 Pro Series.
- TPS060-GP24V (60W): The workhorse for standard PLC panels and HMI displays.
- TPS100-GP24V (100W) & TPS100-DR1S24A: High power density for motor drives and complex automation cells.
The 12V DC Series (Embedded & Legacy Systems)
For systems requiring 12V logic or legacy equipment, we offer equivalent slim profiles:
- TPS010-GP12V (10W)
- TPS030-GP12V (30W)
- TPS060-GP12V (60W)
- TPS100-GP12V (100W) & TPS100-DR1S12A
- TPS150-DR1S12A (150W): Maximum power for demanding 12V applications.
7. RFQ and procurement checklist
When requesting a quote for an automation control DIN rail power supply, providing the right information ensures you receive the most cost-effective and technically appropriate solution. Consider the following checklist:
- Nominal Output Voltage & Current: (e.g., 24V DC, 5A).
- Peak Load Requirements: Do you have inductive loads (motors/valves) that require a power boost feature?
- Input Voltage Range: Standard 115/230V AC, or do you need wide-range DC input capabilities?
- Cabinet Space Constraints: Maximum allowable width on the 35mm DIN rail power supply setup.
- Environmental Conditions: Operating temperature range (e.g., -25°C to +70°C) and vibration requirements.
- Certifications Required: UL, CE, CB scheme, or specific maritime/railway approvals.
