Siemens
Siemens 3TH2031-0AC2 Contactor Relay - 24V AC, 3 NO + 1 NC
Siemens 3TH2031-0AC2 Contactor Relay - 24V AC
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CAGE: 9NK75
3 NO + 1 NC Auxiliary Contacts
24V AC Coil Voltage
EN 50011 Standard
Screw Terminals
AC Operation
Product description
The Siemens 3TH2031-0AC2 is a 31E series contactor relay, compliant with EN 50011 standards. It features 3 normally open (NO) and 1 normally closed (NC) contacts, designed for AC operation with a coil voltage of 24V AC at 50/60 Hz. This relay uses screw terminals for secure connections.
This contactor relay is designed for use in auxiliary and control current circuits, commonly found in industrial automation, motor control, and building management systems.
Stanlo Automation, a veteran-owned business, is your go-to source for surplus industrial automation parts. We pride ourselves on offering quality products and dependable service to meet your operational needs.
Technical specifications
| Contacts | 3 NO + 1 NC |
| Coil Voltage | 24V AC (50/60 Hz) |
| Series | 31E |
| Standard | EN 50011 |
| Connection | Screw terminal |
| Operation | AC |
Common applications
Control Circuits
Auxiliary Functions
Motor Starters
Automation Control Panels
Compatible systems
Used in AC control circuits for general industrial automation and auxiliary functions.
Also known as
Siemens 31E Relay
3TH2031-0AC2
Replaces / compatible with
This product is phased-out. The successor is SIRIUS 3RH21.
Technical note
Expert tip
Ensure the control circuit voltage matches the 24V AC rating for proper operation.What happens next?
1
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2
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Confirms your part's spec and condition
3
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Frequently asked questions
What is the contact configuration of the Siemens 3TH2031-0AC2 Contactor Relay?
The Siemens 3TH2031-0AC2 Contactor Relay is equipped with a contact configuration of 3 normally open (NO) and 1 normally closed (NC) auxiliary contacts.