Coil
for 3TH8 / 3TB40 / 3TB41 – 3TY7403-0AP0
The Siemens 3TY7403-0AP0 is a replacement
electromagnetic coil (magnet coil) designed for Siemens SIRIUS and
legacy contactor series, including 3TH8, 3TB40, 3TB41, 3TF30–3TF43, and
related models. It is used to energize the contactor mechanism, enabling
reliable switching of power circuits in industrial control applications.
This coil operates on 230 V AC (50 Hz) / 277 V AC
(60 Hz) control supply and is engineered for stable performance, high
durability, and consistent magnetic operation. It serves as a direct
replacement for older coil versions, ensuring compatibility and long-term
service continuity in existing installations without needing full contactor
replacement.
The 3TY7403-0AP0 is widely used in industrial
automation systems, motor control circuits, distribution panels, and OEM
machinery, where dependable contactor operation is required under
continuous duty conditions.
🔹 Key Features
|
Parameter |
Specification |
|
Product
Series |
Siemens
3T / 3TY Accessories |
|
Model
Number |
3TY7403-0AP0 |
|
Product
Type |
Electromagnetic
Coil |
|
Function |
Contactor
coil / actuation |
|
Compatible
Devices |
3TH8,
3TB40–44, 3TF30–43, 3TH3, 3TH4 |
|
Coil
Voltage |
230
V AC (50 Hz) / 277 V AC (60 Hz) |
|
Operating
Type |
AC
energized coil |
|
Mounting
Type |
Internal
contactor replacement part |
|
Application
Type |
Contactor
control & switching |
|
Usage
Area |
Industrial
control panels, MCC, OEM systems |
|
Construction |
Insulated
electromagnetic coil design |
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