Siemens
Siemens 3TH2040-0AC2 Contactor Relay - 24V AC, 4 NO
Siemens 3TH2040-0AC2 Contactor Relay - 24V AC
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4 NO Auxiliary Contacts
24V AC Coil Voltage
EN 50011 Standard
Screw Terminals
AC Operation
Product description
The Siemens 3TH2040-0AC2 is a 40E series contactor relay, compliant with EN 50011 standards. This unit features 4 normally open (NO) contacts and is designed for AC operation with a coil voltage of 24V AC at 50/60 Hz. It utilizes screw terminals for secure electrical connections.
This contactor relay is suitable for a wide range of industrial applications, including motor control, automation systems, and control panel wiring where multiple NO contacts are required.
As a veteran-owned surplus parts distributor, Stanlo Automation is committed to providing reliable industrial automation components. We offer competitive pricing and efficient service to support your business needs.
Technical specifications
| Contacts | 4 NO |
| Coil Voltage | 24V AC (50/60 Hz) |
| Series | 40E |
| Standard | EN 50011 |
| Connection | Screw terminal |
| Operation | AC |
Common applications
Control Circuits
Automation Panels
Motor Starters
Industrial Automation
Compatible systems
Designed for AC control circuits and automation applications requiring multiple NO contacts.
Also known as
Siemens 40E Relay
3TH2040-0AC2
Replaces / compatible with
This product is phased-out. The successor is SIRIUS 3RH21.
Technical note
Expert tip
Ensure sufficient current handling capacity for the 4 NO contacts in your specific application.What happens next?
1
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2
Account manager assigned
Confirms your part's spec and condition
3
Your quote delivered
Tailored to your specific requirements
Frequently asked questions
What is the contact configuration for the Siemens 3TH2040-0AC2 Contactor Relay?
The Siemens 3TH2040-0AC2 Contactor Relay is equipped with 4 normally open (NO) auxiliary contacts, providing multiple switching capabilities for control circuits.