Engineered for commercial and industrial applications, the Siemens 3VA5125-4ED31-0AA0 is a 3-pole MCCB from the SENTRON family. It delivers robust 25A protection for modern power distribution systems. This breaker installs into Siemens 3VA panelboards and motor control centers, serving as a replacement for the legacy ED43B025. Rated 25kAIC at 480VAC, it features a TM210 trip unit with fixed thermal and magnetic settings. The current-limiting design is ideal for demanding motor loads.
Siemens 3VA Panelboards, Switchboards, Motor Control Centers
Protection and operation
Trip Technology
Thermal Magnetic
Trip Function Code
LI
Trip Function
Long-Time, Instantaneous
Trip Adjustability
Fixed Thermal, Fixed Magnetic
Standards and features
Available Options
Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Rotary Handle, Lugs, DIN Rail Adapter, Handle Lock
Accessories
Nut Keeper
Standards
IEC 60947-2, UL 489, CSA C22.2 No. 5
Approval
ABS, CE, CSA, DNV, EAC, Lloyd's, UL, VDE
Temp Rating
-25C to 70C
Construction Features
HACR Rated, Current Limiting, Reverse Feed
Product FAQs
7 answers
What legacy Siemens circuit breaker does the 3VA5125-4ED31-0AA0 replace?
This 3VA5 series breaker serves as a modern replacement for the legacy Siemens ED43B025 molded case circuit breaker.
Is the Siemens 3VA5125-4ED31-0AA0 rated for reverse feed applications?
Yes, Siemens 3VA5 thermal-magnetic trip circuit breakers are UL listed for reverse feed applications.
What frame size is the 3VA5125-4ED31-0AA0?
This breaker is built on the Siemens 3VA51 frame, which has a maximum capacity of 125A.
What equipment is the 3VA5125-4ED31-0AA0 compatible with?
This breaker is designed for use in Siemens 3VA panelboards, switchboards, and motor control centers.
How should this 3-pole breaker be wired for 500VDC applications?
When applying this breaker on 500V ungrounded DC systems, the power supply must be connected in a zig-zag (series) configuration through all three poles.
Are the thermal and magnetic trip settings adjustable on the 3VA5125-4ED31-0AA0?
No, this breaker uses a TM210 thermal-magnetic trip unit with fixed long-time and fixed instantaneous protection settings.
What is the breaking capacity class of the 3VA5125-4ED31-0AA0?
This breaker features a Standard (Class S) breaking capacity, which provides a 25kA interrupting rating at 480VAC.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 8 reviews.