Product Description
Siemens 3TK2825-1BB40 SIGUARD Safety Relay Module
The Siemens 3TK2825-1BB40 is a versatile safety relay from the trusted SIGUARD family, engineered to monitor and control safety-critical circuits in industrial applications. This compact module is ideal for implementing safety functions such as emergency stop (E-STOP) pushbuttons and protective door monitoring. Operating on a 24 V DC supply, it provides reliable performance and clear diagnostics through front-panel LED indicators for power and channel status. Built to meet stringent safety standards like IEC 60947-5-1, this relay ensures the protection of both personnel and machinery, making it an essential component for any modern automation safety system.
Technical Specifications:
- Model: 3TK2825-1BB40
- Brand: Siemens
- Series: SIGUARD
- Supply Voltage: 24 V DC
- Rated Insulation Voltage (Ui): 300 V
- Rated Impulse Withstand Voltage (Uimp): 4 kV
- Utilization Category: AC-15 / DC-13
- Rated Operational Current (Ie): 6 A at AC-15; 6 A / 0.2 A / 0.1 A at DC-13
- Short Circuit Protection: 1 kA at 350V
- Maximum Fuse Protection: 6 A (gL/gG)
- Supported Wire Cross-Section: 1x 0.5…4 mm² or 2x 0.5…2.5 mm²
- Status Indicators: LED for Power, Channel 1, Channel 2

Siemens 3TK2825-1BB40 Safety Relay Module
Buy the genuine Siemens 3TK2825-1BB40 SIGUARD safety relay module. This 24V DC unit is designed for reliable monitoring of E-STOP and safety gate circuits, ensuring enhanced machine safety in industrial automation systems. Features clear LED status indicators and robust construction.








