6EP1961-3BA21 | Siemens 24V DC High Current Redundancy

Product Overview

The Siemens 6EP1961-3BA21 is a SITOP PSE202U redundancy module for high-current 24 V DC power systems.
It ensures uninterrupted power delivery by decoupling two independent SITOP power supplies.
Moreover, the module prevents reverse currents and electrical interference between parallel supplies.
Therefore, system availability improves significantly in automation environments requiring continuous operation.

This model supports output currents up to 40 A, making it suitable for demanding control cabinets.
In addition, Siemens designed the module for compact DIN rail mounting in industrial enclosures.

Technical Data / Specifications

• Manufacturer: Siemens

• Article Number: 6EP1961-3BA21

• Product Type: Redundancy Module

• Series: SITOP PSE202U

• Input Voltage: 24 V DC

• Output Voltage: 24 V DC

• Maximum Output Current: 40 A

• Function: Decoupling two 24 V DC power supplies

• Mounting Method: DIN rail mounting

• Packaging Dimensions: 5.315 × 5.315 × 3.15 inches

• Net Weight: 0.882 lb

• Quantity Unit: 1 Piece

• Dangerous Goods: No

• Export Control Regulations: AL : N / ECCN : N

• Standard Delivery Time: 10 Days

• Lifecycle Status: Active Product

FAQ

What is the main purpose of the Siemens 6EP1961-3BA21?
It provides redundancy by decoupling two 24 V DC power supplies feeding one load.

Does this module store energy or act as a UPS?
No, it does not store energy or provide backup power.

What is the maximum supported output current?
The module supports continuous output currents up to 40 A.

Which power supplies are compatible?
It is designed for use with Siemens SITOP 24 V DC power supplies.

Is the product still actively supported by Siemens?
Yes, it is classified as an active SITOP product.