6EP1336-1LB00 SITOP PSU100L (Industrial-Grade 24V DC Power Module)

The Siemens 6EP1336-1LB00 represents a proven solution for continuous 24-volt DC power distribution in factory automation and process control installations. Built on SITOP PSU100L architecture, this 480-watt stabilized supply addresses voltage fluctuation challenges while maintaining ±3% regulation accuracy across variable load conditions.

Designed for system integrators and maintenance engineers managing PLC-based control networks, this unit eliminates power-related faults that cause unexpected downtime in production environments. Whether you're upgrading legacy systems or commissioning new installations, the 6EP1336-1LB00 delivers field-proven reliability for mission-critical 24V circuits.

Key advantages include wide-range AC input compatibility (100-240V), thermal resilience from -25°C to +70°C, and built-in protection against overload, short-circuit, and surge events—ensuring your automation infrastructure operates without interruption.

Core Features & Benefits

→ Universal Input Flexibility: Accepts 100-240V AC ±10% at 50/60 Hz, eliminating the need for voltage-specific models across global installations while reducing spare parts inventory.

→ High-Efficiency Switch-Mode Design: Achieves >91% energy conversion efficiency at nominal load, reducing heat generation and lowering operational costs compared to linear power supplies.

→ Compact DIN Rail Integration: 125mm width fits standard 35mm DIN rails with tool-free snap mounting, maximizing panel density in space-constrained control cabinets.

→ Extended Temperature Performance: Operates reliably in harsh environments from -25°C to +70°C without derating, ideal for outdoor enclosures and non-climate-controlled facilities.

→ Parallel Redundancy Capability: MOSFET-based active ORing enables N+1 configurations with multiple units for fault-tolerant power architectures without external diode modules.

→ Comprehensive Circuit Protection: Electronic overload shutdown, current-limiting short-circuit response, and overvoltage safeguards up to 150% rated voltage protect downstream equipment investments.

Application Scenarios

✓ Discrete Manufacturing Lines: In automotive assembly plants and packaging machinery, the 6EP1336-1LB00 powers Siemens S7-1200/1500 PLCs, distributed I/O racks, and HMI touchscreens. Stable voltage regulation prevents logic errors during high-speed production cycles, while the 20A capacity supports multiple devices from a single supply—reducing wiring complexity and installation time.

✓ Process Control Systems: Chemical processing facilities and water treatment plants rely on this unit for SCADA field instrumentation, valve actuators, and safety interlock circuits. The wide temperature range ensures consistent operation in pump rooms and outdoor analyzer shelters where ambient conditions vary seasonally, maintaining measurement accuracy and regulatory compliance.

✓ Infrastructure & Building Automation: Commercial HVAC systems, access control networks, and emergency lighting controllers benefit from the unit's 24/7 reliability rating. Facility managers appreciate the diagnostic LED indicators that simplify troubleshooting during service calls, minimizing mean-time-to-repair for critical building systems.

✓ Material Handling & Logistics: Conveyor control panels and automated storage systems in warehouses use the 6EP1336-1LB00 to energize motor starters, proximity sensors, and barcode scanners. The overload protection prevents nuisance trips during inrush current events when multiple motors start simultaneously.

✓ Marine & Offshore Platforms: With GL and DNV certifications, this power supply meets stringent maritime requirements for vibration resistance and salt-fog exposure. Shipboard automation systems and offshore drilling rigs depend on its robust construction for uninterrupted operation in corrosive environments.

Technical Parameters & Selection Guide

Selection Criteria: Calculate total load current by summing all connected devices (PLCs, I/O modules, sensors). Add 20-30% safety margin for inrush currents and future expansion. For loads exceeding 16A continuous, select this 20A model. For redundant systems, use two units in parallel with load sharing. Verify ambient temperature stays within -25°C to +70°C range; use forced ventilation above +60°C for full power output.

Extended Functions

Remote Monitoring Integration: Optional SITOP PSE200U monitoring module (sold separately) enables real-time diagnostics via PROFINET or Modbus TCP, providing voltage, current, and temperature data to SCADA systems for predictive maintenance strategies.

Selective Fuse Coordination: Built-in electronic current limiting coordinates with upstream circuit breakers, preventing nuisance trips while isolating faults to specific branch circuits—maintaining power to unaffected loads during troubleshooting.

Adjustable Output Voltage: Front-panel potentiometer allows fine-tuning from 24V to 28V DC, compensating for voltage drop in long cable runs or matching legacy equipment requirements without external boosters.

Conformal Coating Option: Factory-applied protective coating (specify at order) shields PCB assemblies from moisture, dust, and chemical vapors in harsh industrial atmospheres, extending service life in corrosive environments.

Delivery & Service Assurance

Lead Time: Standard stock items ship within 2-3 business days. Custom configurations (conformal coating, extended temperature testing) require 10-15 business days. Expedited shipping available for urgent replacements.

Warranty Coverage: 12-month manufacturer warranty covers defects in materials and workmanship from shipment date. Warranty includes free replacement units and return shipping for verified failures under normal operating conditions.

Technical Support: Application engineering assistance available via email and phone for sizing calculations, panel layout reviews, and troubleshooting. Response within 4 business hours for technical inquiries.

Documentation Package: Each unit includes installation manual, wiring diagrams, CE declaration of conformity, and dimensional drawings. CAD files (STEP, DXF) and EPLAN macros available for download from product support portal.

Frequently Asked Questions

What wire gauge should I use for 20A output connections?
Use minimum 14 AWG (2.5mm²) copper wire for output terminals to handle 20A continuous current. The push-in spring terminals accept 0.5-4mm² wire ranges (24-12 AWG). For runs exceeding 10 meters, upsize to 12 AWG (4mm²) to minimize voltage drop below 0.5V.

Can this power supply operate in parallel with different SITOP models?
Yes, all SITOP PSU100L series units (10A, 20A, 40A) feature compatible ORing diodes for parallel operation. Connect output terminals in parallel and ensure total load doesn't exceed combined current rating. Units automatically share load proportionally based on individual capacity.

How much energy savings does 91% efficiency provide compared to older supplies?
At full 480W load, this unit dissipates approximately 43W as heat versus 96W for a typical 75% efficient linear supply—reducing cooling requirements by 53W. Over 8,760 hours annual operation, this saves 464 kWh per year, equivalent to $46-93 annually at $0.10-0.20/kWh industrial rates.

Does the unit require external fusing or circuit protection?
Yes, install a 10A slow-blow fuse or circuit breaker on the AC input side per NEC/IEC requirements. The internal electronic protection safeguards the power supply itself but doesn't replace branch circuit overcurrent protection mandated by electrical codes.

Is this compatible with solar or battery-backed UPS systems?
Fully compatible with modified sine wave and pure sine wave inverters. The wide input range (100-240V AC) accommodates voltage variations during battery discharge. For DC input applications, consider SITOP DC-UPS modules designed specifically for battery backup integration.

What maintenance intervals are recommended for industrial environments?
Inspect terminal connections quarterly for tightness (torque to 0.5-0.6 Nm). Clean ventilation slots semi-annually in dusty environments using compressed air. Verify output voltage annually with calibrated multimeter. Electrolytic capacitors have 10+ year service life at rated temperature; no routine replacement needed.

Get Your Industrial Power Solution Today

Ready to upgrade your control panel power infrastructure? Contact our technical sales team for application-specific sizing assistance, volume pricing, or custom configuration options. We provide same-day quotations and can coordinate delivery with your project timeline.

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