Siemens SENTRON ACB – Microprocessor Based Trip Unit –
3WA1240-3AF31-4EA4
The Siemens 3WA1240-3AF31-4EA4 is a SENTRON 3WA
series Air Circuit Breaker (ACB) engineered for advanced protection,
monitoring, and switching of low-voltage power distribution systems. It
is widely used in main LT panels, PCC switchboards, industrial plants,
commercial complexes, utilities, infrastructure projects, and critical power
applications where intelligent protection and high operational reliability
are required.
This ACB is equipped with a microprocessor-based
electronic trip unit that provides precise protection against overload,
short-circuit, and fault conditions. The intelligent trip system enables
selective coordination, real-time diagnostics, system monitoring, and improved
electrical safety in modern distribution networks.
The SENTRON 3WA platform features modular
construction with digital-ready functionality, making it ideal for smart energy
management and demanding industrial electrical installations.
Key Features
|
Parameter |
Specification |
|
Product Model |
3WA1240-3AF31-4EA4 |
|
Brand |
Siemens |
|
Series |
SENTRON 3WA |
|
Product Type |
Air Circuit Breaker (ACB) |
|
Trip Unit Type |
Microprocessor-based electronic trip unit |
|
Protection Functions |
Overload, short-circuit, fault protection |
|
Installation Type |
Fixed / draw-out execution dependent |
|
Number of Poles |
3 Pole / 4 Pole variant dependent |
|
Rated Operational Voltage |
Up to 690 V AC |
|
Frequency |
50/60 Hz |
|
Application |
Main LT power distribution |
|
Communication Capability |
Intelligent monitoring support |
|
Standards |
IEC 60947-2 |
No reviews yet.