Siemens Contactor Relay 3NO+1NC
AC230V – 3MH7031-1AL20
The Siemens 3MH7031-1AL20
is a contactor relay (auxiliary contactor) from the SINOVA/3MH series,
designed for control, signalling, and switching of auxiliary circuits in
industrial automation systems. It is used to switch low-power control
signals, not power loads, making it ideal for PLC panels, control
relays, interlocking circuits, and automation logic applications.
This model features a 3NO + 1NC contact configuration, allowing flexible control logic and reliable signal switching in electrical panels.
Key Features:
|
Parameter |
Specification |
|
Product Series |
Siemens 3MH / SINOVA |
|
Part Number |
3MH7031-1AL20 |
|
Product Type |
Contactor Relay (Auxiliary
Contactor) |
|
Coil Voltage |
230V AC |
|
Frequency |
50/60 Hz |
|
Contact Configuration |
3NO + 1NC |
|
Application Category |
Control & auxiliary switching |
|
Mounting Type |
Panel / DIN rail (system
dependent) |
|
Function |
Signal switching, interlocking,
control logic |
|
Standard Compliance |
IEC industrial control standards |
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