Introduction to the Siemens 6EP1336-1LB00
When a control cabinet demands reliable 24V DC power, the 6EP1336-1LB00 from Siemens provides a stabilized output rated at 20A. This SITOP PSU100L power supply converts a wide-ranging AC input into a tightly regulated DC bus, ensuring consistent operation of PLCs, sensors, and actuators. Its robust design and comprehensive protection features make it a dependable choice for modern automation environments.

Key Features & Technical Specifications
The 6EP1336-1LB00 is engineered for efficiency and durability. Below are the core parameters extracted from the official datasheet:
- Input Voltage: 100-240 V AC (wide range, 85-264 V AC / 88-370 V DC)
- Output Voltage: 24 V DC (adjustable 22.8-26.4 V)
- Output Current: 20 A (rated range 0-20 A, derating above +45°C)
- Efficiency: 92% typical
- Residual Ripple: ≤150 mV (typical 50 mV)
- Short-Circuit Protection: Constant current characteristic, enduring short-circuit current ~24 A
- Galvanic Isolation: Yes, SELV output per EN 60950-1 and EN 50178
- Protection Class: IP20
- Weight: 1.8 kg
One distinctive feature is the wide-range input, which accepts both AC and DC supplies, simplifying global deployment. The output voltage is adjustable via a potentiometer, allowing fine-tuning for specific loads. Additionally, the unit supports parallel operation of up to two units to increase power, providing scalability for growing systems.
Applications & Use Cases
The 6EP1336-1LB00 is well-suited for industrial control panels, machine tools, and process automation systems. Its stable 24V DC output powers PLCs, HMIs, and field devices, ensuring reliable operation even in harsh environments. The wide temperature range (-25°C to +70°C) and IP20 rating make it suitable for cabinet mounting in factories and plants.
Installation & Setup
Mounting the 6EP1336-1LB00 is straightforward: it snaps onto a standard DIN rail (EN 60715 35x7.5/15). The screw-type terminals accept 0.5-2.5 mm² wires for both input and output connections. Ensure adequate spacing (50 mm top/bottom) for ventilation. The unit features a green LED for output status, simplifying commissioning.
Maintenance & Reliability
With no moving parts and a rugged enclosure, the 6EP1336-1LB00 requires minimal maintenance. Periodic inspection of terminal tightness and ambient temperature is recommended. The unit's design includes mains buffering of at least 20 ms at rated load, protecting against brief power interruptions. Its high efficiency also reduces thermal stress, extending service life.
Cost-Efficiency and ROI Analysis
Investing in the 6EP1336-1LB00 yields long-term savings through its high efficiency (92%), reducing energy losses and operational costs. The wide input range minimizes the need for multiple power supply variants, lowering inventory and logistics expenses. Furthermore, the robust short-circuit and overvoltage protection (<33 V) reduces downtime and repair costs, enhancing overall return on investment.

Compatibility & Integration
The 6EP1336-1LB00It can be paralleled with another identical unit to double the output current, offering flexibility for system expansion.
Troubleshooting & Common Issues
Common issues with power supplies include output voltage drops and overheating. For the 6EP1336-1LB00, check the input voltage is within the specified range and that the load does not exceed 20A. If the unit enters current limiting, reduce the load or improve ventilation. The green LED indicates normal operation; if it is off, verify input power and fuse status.
Support & Availability
The 6EP1336-1LB00 is available from AutoDCSTech, a trusted industrial automation parts supplier. Contact our team for pricing and lead times. We ensure genuine Siemens products and reliable delivery.
Availability & Condition at AutoDCSTech
| Part Number | 6EP1336-1LB00 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | Germany |
