Siemens 6EP1961-2BA11 Selectivity Module PSE200U

Siemens 6EP1961-2BA11 SITOP Selectivity Module

The 6EP1961-2BA11 is a Siemens SITOP PSE200U electronic selectivity module. It acts as a smart, resettable electronic fuse for 24V DC power branches. This module protects downstream circuits and enables selective shutdown in case of a fault.

Core Electrical Specifications

• Brand & Model: Siemens 6EP1961-2BA11 (PSE200U)
• Input Voltage: 24 V DC (22 - 30 V)
• Total Input Current: Up to 12 A
• Number of Outputs: 4 independent channels
• Output Current: Adjustable from 0.5 A to 3 A per channel
• Efficiency: Typically 97%
• Power Loss: Typical 9 W at full load

Protection Features & Integration

• Key Function: Protects each output branch against overload and short-circuit with adjustable thresholds.
• Response Modes: Delayed switch-off for overload (5s), fast for high overcurrent (~100ms), immediate for input undervoltage.
• Status Indication: Per-channel three-color LED (green/yellow/red).
• Signaling: One common signaling contact (changeover) for remote alarm.
• Reset: Manual per channel or via a common remote reset input.
• Mounting: Snaps onto 35mm DIN rail.

Physical Data & FAQs

• Dimensions: 72 mm x 80 mm x 72 mm (W x H x D)
• Weight: Approximately 0.2 kg
• Operating Temperature: -25°C to +60°C
• Q: What is the main purpose of this module?
  A> It replaces fuses or circuit breakers for 24V DC branches. It allows selective disconnection of only the faulty circuit, keeping the rest of the system running.
• Q: How is the current limit set?
  A> Each of the four channels has a potentiometer to set the trip current between 0.5A and 3A precisely.
• Q: Can outputs be turned on in sequence?
  A> Yes. A DIP switch allows selection between simultaneous or sequential (load-optimized) startup of the outputs.