Siemens Hilfsschütz 4 S DC 24 V

Siemens Hilfsschütz 4 S DC 24 V – Compact Relay for Industrial Control Circuits

The Siemens 3RH2140-1BB40 is a 4-pole auxiliary relay designed for DC 24 V control circuits in industrial and building automation applications. It provides reliable switching of control signals with a compact, mountable design.

• 4 changeable contacts handle multiple control circuits from a single relay unit
• DC 24 V operating voltage suits standard industrial control power supplies
• 24 months manufacturer warranty ensures long-term operational reliability
• Compact form factor fits standard DIN rail mounting in distribution cabinets

Das zeichnet Siemens Hilfsschütz 4 S DC 24 V aus

As a dedicated auxiliary relay, this device is optimised for switching control signals rather than power loads. The 4-pole configuration allows it to monitor or route multiple circuit states simultaneously, which is essential in complex relay logic and interlocking circuits.

Ideal für...

Industrial control cabinets, building automation systems, and machine wiring applications where a compact, reliable DC 24 V relay with 4 changeable contacts is required. Suitable for integrators and electrical engineers designing control circuits in the Siemens ecosystem.

Anwendung von Siemens Hilfsschütz 4 S DC 24 V

1. Mount the relay on a standard DIN rail inside the control cabinet
2. Connect the DC 24 V supply to the coil terminals
3. Wire the 4 changeable contacts to the control circuits requiring monitoring or switching
4. Verify correct contact operation under load before commissioning