Siemens
Siemens 3TX7 144-5LC03 Relay Coupler
Siemens 3TX7 144-5LC03 relay coupler with 1 CO contact, 24V AC/DC.
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1 Change-over contact
24V AC/DC coil voltage
Interface functionality
Compact design
Phased-out product
Product description
The Siemens 3TX7 144-5LC03 is a relay coupler featuring one change-over (CO) contact and an input voltage of 24V AC/DC. This component is designed for interface applications within industrial control systems. Please note that this product has been phased out.
Relay couplers like the 3TX7 144-5LC03 are crucial in bridging different voltage levels or signal types between control circuits and actuators. They find applications in machine building, process automation, and control panel design.
Stanlo Automation, a veteran-owned supplier, offers surplus Siemens industrial parts like the 3TX7 144-5LC03. Contact us for availability and to secure this phased-out component.
Technical specifications
| Type | Relay Coupler |
| Contacts | 1 CO (Change-over) |
| Input Voltage | 24 V AC/DC |
| Output Voltage | Varies by application |
| Connection | Screw terminals |
Common applications
Control panel wiring
PLC interfacing
Signal isolation
Machine automation
Industrial control
Compatible systems
Control systems requiring 24V AC/DC interface relays
Also known as
Siemens 3TX7 144-5LC03 relay
Replaces / compatible with
The preferred successor for the Siemens 3TX7 144-5LC03 is often a current model within the Siemens SIRIUS or LOGO! product lines, offering similar or enhanced functionality. Specific replacement depends on application requirements.
Technical note
Expert tip
As a phased-out product, ensure availability and consider potential long-term support implications when specifying the 3TX7 144-5LC03.What happens next?
1
Email confirmation
Immediate receipt acknowledgment sent to you
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 coil voltage for the Siemens 3TX7 144-5LC03 relay coupler?
The Siemens 3TX7 144-5LC03 relay coupler has a coil voltage rating of 24V AC/DC. This allows it to be used in systems operating on either AC or DC power at this voltage level.