Siemens 3WJ Air Circuit Breaker (ACB) – Microprocessor
Based Trip Unit – 3WJ1112-2AF62-4DG4
The Siemens 3WJ1112-2AF62-4DG4 is a SENTRON /
SINOVA 3WJ series Air Circuit Breaker (ACB) designed for reliable
protection and control of low-voltage power distribution systems in industrial
plants, PCC panels, main LT switchboards, commercial buildings, and infrastructure
projects. It is used in applications where high fault levels, system
selectivity, and intelligent protection coordination are required.
This breaker belongs to the 3WJ1112 frame size (1250A
class) and is equipped with a microprocessor-based electronic trip unit
(ETU) that provides advanced protection functions including overload,
short-circuit, and earth fault protection, with fully adjustable settings
for precise coordination and system safety.
With a rated current of 1250A and a breaking
capacity of 50kA at 440V AC, it is suitable for heavy-duty industrial
power distribution systems requiring reliable interruption, high
selectivity, and long operational life.
Key Features
|
Parameter |
Specification |
|
Product Model |
3WJ1112-2AF62-4DG4 |
|
Brand |
Siemens |
|
Series |
SINOVA / SENTRON 3WJ |
|
Type |
Air Circuit Breaker (ACB) |
|
Frame Size |
3WJ1112 |
|
Rated Current |
1250 A |
|
Number of Poles |
4 Pole |
|
Breaking Capacity (Icu) |
50 kA @ 440 V AC |
|
Rated Voltage |
440 V AC |
|
Frequency |
50/60 Hz |
|
Protection Type |
Overload, short-circuit, earth fault |
|
Trip Unit |
Microprocessor-based ETU |
|
Mounting Type |
Draw-out type |
|
Standards |
IEC 60947-2 |
No reviews yet.