Description
The Siemens SITOP PSU100S (Model: 6EP1333-2BA20) is an industrial-grade, primary-switched power supply belonging to the SITOP smart product family. Operating on a 1-phase 120 V / 230 V AC input, this unit delivers a continuous, highly stabilized 24 V DC output at up to 5 A (120 W total output capacity).
Engineered to fulfill high technical standards while maintaining a compact footprint, the SITOP PSU100S handles high-inrush currents seamlessly by providing 150% “Extra Power” for short durations. This capability allows downstream loads like DC motors, solenoids, and capacitive loads to start up without dropping system voltage. For control engineers, system integrators, and plant maintenance teams across Bangladesh, this Siemens unit guarantees smooth operational continuity and robust equipment protection in demanding industrial setups.
Key Features
- Automatic Input Voltage Selection: Automatically switches between 120 V AC and 230 V AC operating ranges for flexible global usage.
- 150% Extra Power Reserve: Supplies up to 1.5 times the nominal current for starting heavy loads with high inrush demand.
- Adjustable Output Voltage: Output voltage can be trimmed from 22.8 V to 28 V DC via potentiometer to compensate for cable line drops.
- Integrated Signaling Contact: Features an onboard signaling contact for “24 V DC OK” to communicate power status directly to PLC systems.
- Compact DIN-Rail Design: Heavy-duty metal enclosure engineered for 35 mm DIN-rail mounting with space-saving panel width.
Technical Advantages
- High Efficiency Operation: Achieves up to ~90% efficiency across full load range, reducing internal cabinet heat buildup.
- Durable Construction: Rugged IP20 metal housing designed to endure ambient vibration, shock, and thermal stress.
- Comprehensive Electrical Protection: Equipped with built-in short-circuit protection, overload protection, and automatic thermal restart.
- Energy Saving: Minimal no-load and standby losses reduce total utility power costs.
- Easy Maintenance: Clear diagnostic front LED and accessible screw terminals facilitate fast wiring inspections and routine servicing.
Applications
- Residential: Power supply backup and conditioning for custom smart home automation hubs.
- Commercial: Centralized HVAC controllers, building management systems (BMS), and security monitoring racks.
- Industrial: SIMATIC S7 PLC systems, HMIs, distributed I/O modules, sensor networks, and control relays.
- Factory: Textile mills, garment factories, pharmaceuticals, packaging machinery, and printing presses.
- Office: Central power supply for enterprise access control and infrastructure panels.
- Project Installation: Custom OEM control cabinets, sub-distribution panels, and factory automation retrofits.
Why Choose This Product?
- Siemens Industrial Engineering: World-renowned SITOP technology offers long operating life and high mean time between failures (MTBF).
- Superior Inrush Capacity: Starts demanding loads effortlessly without causing nuisance tripping or system voltage sags.
- Cost Effectiveness: Limits operational downtime, protects expensive PLC processors, and optimizes electrical energy consumption.
- After-Sales Value: Supported by loopshop.com.bd with dedicated customer assistance and fast nationwide delivery across Bangladesh.
Technical Specification Table
| Specification | Details |
| Model | 6EP1333-2BA20 |
| Brand | Siemens |
| Rated Power | 120 W |
| Voltage | Input: 120 / 230 V AC (Auto-range: 85–132 V / 170–264 V AC)
Output: 24 V DC (Adjustable 22.8–28 V DC) |
| Current | Output Current: 5 A (Continuous) / 7.5 A (Extra Power short-term) |
| Frequency | 50 / 60 Hz |
| Efficiency | Approx. 90% |
| Protection | Short-circuit protection, Overload protection, IP20 degree of protection |
| Dimension | 50 mm (W) x 125 mm (H) x 120 mm (D) |
| Weight | Approx. 0.4 kg (400 g) |
| Operating Temperature | -25 °C to +70 °C |
| Warranty | Standard Manufacturer Warranty |
Features List
- ✓ High efficiency operation (~90%)
- ✓ 150% Extra Power for high-inrush load starting
- ✓ Automatic 120/230 V AC input range switching
- ✓ Compact 50 mm wide 35 mm DIN-rail enclosure
- ✓ Adjustable 24 V DC output with signaling contact
Benefits For Customers
- Reduces Electricity Cost: ~90% high efficiency limits waste heat dissipation and optimizes power draw.
- Improves Operational Reliability: Keeps automation equipment operating continuously without micro-reboots during line dips.
- Saves Maintenance Cost: Built-in electronic protection safeguards connected PLCs, sensors, and relays from short circuits.
- Suitable for Bangladesh Environment: Handles ambient temperatures up to +70 °C inside industrial panels operating in local factories.
Installation & Maintenance Guide
Installation Requirements:
- Snap the unit securely onto a standard 35 mm DIN rail (EN 60715 35×7.5/15) in a vertical position.
- Maintain at least 50 mm clearance space above and below the module for natural thermal convection cooling.
- Connect input wiring (120/230 V AC line and neutral) to the designated upper screw terminals with proper earthing (PE).
- Wire your 24 V DC load to the lower output terminals, ensuring correct polarity and wire cross-sections.
Maintenance Tips:
- Routinely inspect screw terminal connections to ensure wires remain tightly fastened against machine vibration.
- Keep top and bottom ventilation grilles clean and free from accumulated industrial lint, oil film, or dust.
- Monitor the green “24V OK” front LED and signaling contact status during routine panel audits.
Safety Instructions:
- Always isolate primary AC power before carrying out any mounting, wiring, or servicing work.
- Installation must be performed by a qualified electrician or control system engineer.
- Do not operate the unit in wet or dirty environments without placing it in a properly rated enclosure (IP20 rating).
Frequently Asked Questions (FAQ)
Q: What is the price of Siemens Sitop 6EP1333 2BA20 5A DIN Rail Power Supply in Bangladesh?
A: You can check the latest updated price for the Siemens 6EP1333-2BA20 SMPS directly on loopshop.com.bd or contact customer support for live price quotes.
Q: Where can I buy Siemens Sitop 6EP1333 2BA20 5A DIN Rail Power Supply in Bangladesh?
A: You can buy genuine Siemens 6EP1333-2BA20 power supplies online directly from loopshop.com.bd with fast delivery across Bangladesh.
Q: What warranty does this product have?
A: Warranty specifications depend on current manufacturer stocking and distribution policies. Please check loopshop.com.bd or contact sales before placing an order.
Q: Is this suitable for Bangladesh climate?
A: Yes, with an operating temperature rating from -25 °C to +70 °C and wide AC input tolerance, it is designed for control panels operating in Bangladesh.
Q: How to install this product?
A: Snap the unit onto a standard 35 mm DIN rail inside your control panel, connect single-phase AC input power, and attach your 24 V DC load to the output terminals.
Q: Does the 6EP1333-2BA20 automatically select input voltage?
A: Yes, it features automatic switching between 120 V AC and 230 V AC input ranges.
Q: What is the rated continuous output current of this Siemens power supply?
A: The Siemens 6EP1333-2BA20 provides a rated continuous output current of 5 A at 24 V DC (120 W total output).
Q: Can this power supply handle heavy starting currents?
A: Yes, it provides 150% Extra Power to start loads with high inrush current demand without triggering voltage drops.
Q: Can the output voltage be adjusted on the PSU100S 5A module?
A: Yes, the output voltage can be adjusted between 22.8 V and 28 V DC using the front potentiometer.
Q: Is loopshop.com.bd a trusted seller of Siemens products in BD?
A: Yes, loopshop.com.bd is a leading online store in Bangladesh offering authentic industrial automation components and electrical hardware.

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