Siemens 3VJ MCCB – Thermal Magnetic Trip Unit –
3VJ1112-5EB42-0AA0
The Siemens 3VJ1112-5EB42-0AA0 is a SENTRON 3VJ
series molded case circuit breaker (MCCB) designed for reliable protection
of low-voltage electrical distribution systems against overload and
short-circuit faults. It is widely used in industrial switchboards, PCC/MCC
panels, OEM machinery, commercial electrical systems, and infrastructure
applications where dependable power protection and operational safety are
essential. This breaker features a thermal magnetic trip unit (ATFM –
Adjustable Thermal Fixed Magnetic) that provides adjustable overload
protection together with fixed magnetic short-circuit protection for improved
coordination and reliable fault interruption.
This MCCB belongs to the 3VJ11 IEC frame size and
features a 4-pole configuration, making it suitable for applications
requiring phase and neutral protection. With a rated current of 125A and
a breaking capacity of 36kA at 415V AC, it is ideal for demanding
industrial and commercial power distribution systems.
Key Features
|
Parameter |
Specification |
|
Product Model |
3VJ1112-5EB42-0AA0 |
|
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 |
4 Pole |
|
Breaking Capacity (Icu) |
36 kA @ 415 V AC |
|
Ics |
75% of Icu |
|
Overload Protection Range |
100A – 125A |
|
Short-Circuit Protection |
Fixed magnetic trip (Ii = 10 × In) |
|
Protection Type |
Overload + short-circuit protection |
|
Frame Size |
3VJ11 |
|
Rated Operational Voltage |
Up to 690 V AC |
|
Mounting Type |
Fixed mounting |
|
Connection Type |
Screw connection |
|
Frequency |
50/60 Hz |
|
Standards |
IEC 60947-2 |
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