| Attribute | Value |
|---|---|
| Brand | Siemens |
| Series | Sitop PSE202U |
| Type | Redundancy Module |
| Input Voltage | DC 24V |
| Output Voltage/Current | DC 24V / 40A |
| Part Number | 6EP196-1-3BA21 / 6EP1961-3BA21 / 1P 6EP1961-3BA21 |
| Product Codes | S Q6B 1850741 / Q6B 1 / Q 001 |
| Ambient Temperature | 0…60ºC / 0…40ºC |
| Certifications | ATEX 94/9/EC |
| Hazardous Location Rating | Class I, Zone 2 / Class I, Div 2, Gr ABCD T4 |
| Explosion Protection | EX nAC IIC T4 U / EX nAC II T4 IP 20 / AEX nAC II T4 IP20 |
| Input Range | IN 24V–124V -2 |
| Output Terminals | OUT 24V GND / OUT 24V O.K |
| Barcode | 4 025515 152675 |
| Country of Origin | Made in Austria |
| Weight | 490 gm |
What is a Redundancy Module?
A redundancy module is one of the most important parts of any high-availability power supply configuration. It guarantees that in case one power supply fails, another one can switch over instantly without any interruption. It basically allows using several power supplies in parallel and ensures that the load will still be powered if one source fails.
Overview of the SIEMENS SITOP PSE202U
The SIEMENS SITOP PSE202U 6EP1961-3BA21 is a rugged 24V redundancy module made for use in industries. Built to suit the requirements of automated systems, it regulates and manages the current from two power source units and automatically switches to the secondary unit when the main one fails. This keeps your system running with zero down time.
Key Features
These are the best features of the SIEMENS SITOP PSE202U:
High Reliability: For 24V DC power systems with 20 A per channel.
Parallel Power Supply Redundancy: Against system failure.
LED Status Indicators: Unambiguous presentation of operating status, fault warning, and load sharing.
Compact Design: Panel space is conserved with DIN rail mounting.
Fail-safe Operation: Designed to preserve system integrity under failure, spikes, or overloads.
Wide Temperature Range: Efficient operation in extreme environments (-25°C to +70°C).
Applications of the SITOP PSE202U
This redundancy module is perfect for numerous industrial applications where system availability is of high importance:
Factory Automation: Ensures control systems operate without loss of power.
Process Industries: Prevents system downtime in industries such as oil & gas, food processing, and pharmaceuticals.
Building Automation: Prevents system failures in HVAC and access control systems.
Logistics and Transport Systems: Preserves the integrity of material handling and transportation controls.
Critical IT Infrastructure: Provides power to industrial PCs, routers, and gateways that cannot be allowed to go down.
How It Works
SITOP PSE202U can be connected to two independent supplies. Both under normal operation loads share equally. In case the one fails or drops below its minimum operating voltage, the faulty supply is isolated by the module and continues power delivery through the functioning supply. This isolation saves backfeed, and the fault does not spill over to affect the rest of the system.
Advantages of Utilizing SIEMENS SITOP PSE202U
Higher Uptime: Reduces unplanned downtime from power failures.
Cost Reduction: Avoids equipment damage and maintenance expenses.
Scalability of the System: Can be integrated easily in existing SITOP systems or new designs.
Brand Reputation: Supported by Siemens’ worldwide reputation for innovation and quality.
