Siemens 3VJ MCCB – Thermal Magnetic Trip Unit –
3VJ1112-7EB42-0AA0
The Siemens 3VJ1112-7EB42-0AA0 is a SENTRON 3VJ
series molded case circuit breaker (MCCB) designed for reliable protection
of low-voltage power distribution systems against overload and
short-circuit faults. It is widely used in industrial switchboards,
PCC/MCC panels, OEM machinery, commercial installations, and infrastructure
projects where dependable fault interruption and compact protection devices
are required.
This MCCB belongs to the 3VJ11 frame series (125A class)
and is equipped with a thermal magnetic trip unit (ATFM – Adjustable Thermal
Fixed Magnetic), providing adjustable overload protection (typically
100–125A range) and fixed magnetic short-circuit protection for safe
and coordinated operation in electrical networks.
With a rated current of 125A and a breaking
capacity of 55kA at 415V AC, this breaker is suitable for medium-duty
industrial and commercial power distribution systems requiring high
fault-level performance and reliable protection.
Key Features
|
Parameter |
Specification |
|
Product Model |
3VJ1112-7EB42-0AA0 |
|
Brand |
Siemens |
|
Series |
SENTRON 3VJ |
|
Type |
MCCB (Molded Case Circuit Breaker) |
|
Trip Unit |
ATFM (Adjustable Thermal Fixed Magnetic) |
|
Rated Current |
125 A |
|
Number of Poles |
3 Pole |
|
Breaking Capacity (Icu) |
55 kA @ 415 V AC |
|
Ics |
75% of Icu |
|
Overload Protection |
Adjustable thermal |
|
Short-Circuit Protection |
Fixed magnetic |
|
Frame Size |
3VJ11 |
|
Rated Operational Voltage |
Up to 690 V AC |
|
Frequency |
50/60 Hz |
|
Mounting Type |
Fixed mounting |
|
Connection Type |
Screw terminal |
|
Standards |
IEC 60947-2 |
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