Description
Overview
The Siemens 3TX7112-1DF13C is a heavy-duty general-purpose relay designed for dependable performance in HVAC, building automation, and industrial control applications. Featuring a Double Pole Double Throw (DPDT) contact configuration on a standard 8-pin octal base, this relay integrates seamlessly with compatible octal sockets for quick installation and easy field replacement.
Key Features
- Coil Voltage: 120V AC
- Contact Rating: 16A
- Contact Configuration: DPDT (Double Pole Double Throw)
- Pin Configuration: 8-Pin Octal Base
- Brand: Siemens — a globally trusted name in electrical and HVAC controls
- Designed for use with standard octal relay sockets for tool-free swap-out
- Suitable for HVAC control panels, building automation systems, and general-purpose switching circuits
Application
The 3TX7112-1DF13C is ideal for use in HVAC control panels, fan coil unit controls, air handling unit sequencing, and a wide range of commercial and light industrial switching applications. Its octal base design allows for straightforward socket mounting, reducing installation time and simplifying maintenance.
Why Choose Siemens Relays
Siemens relays are engineered to deliver consistent, long-life switching performance in demanding environments. The 3TX7 series is widely specified by HVAC engineers and controls contractors for its robust construction, broad compatibility with standard octal sockets, and reliable coil operation across a wide range of control voltages.







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