3RH2271-1BB40
The Siemens SIRIUS 3RH2271-1BB40 is an S00 size 8-pole contact relay with 7 normally open and 1 normally closed contacts. The auxiliary switch is factory-installed, and it features a DC 24V coil and screw terminal connections. It is suitable for interlocking circuits that require a large number of control contacts.
Product Positioning
The 3RH2271-1BB40 belongs to the SIRIUS 3RH22 series of 8-pole contact relays. It consists of a 4-pole body and a factory-fixed auxiliary switch, providing 7 normally open and 1 normally closed contacts. It can be used with a 24V DC power supply and PLC control system; it is suitable for machine tools and distribution panels that require multi-point interlocking and signal distribution.
Core Product Advantages and Features
7NO+1NC, a total of 8 contacts
A single component provides 8 contacts in total, including 7 normally open and 1 normally closed contacts, reducing the number of relays and wiring within the panel, and saving installation space.
Auxiliary switch fixed installation
The auxiliary switch is fixedly assembled at the factory and will not loosen or be lost. The contacts have forced guidance characteristics and are suitable for safety-related circuits.
DC24V coil
A DC 24V coil can be used with a 24V DC power supply and a PLC control system; surge suppression modules can be installed on the front to protect control components.
Screw terminals
The screw terminal wiring is secure and suitable for general panel installation and future maintenance disconnection.