Designed for heavy-duty industrial applications, this 2-pole, 125A molded case circuit breaker operates within the 250A 3VA5 frame. It utilizes a TM230 thermal-magnetic trip unit, offering fixed thermal overload protection and adjustable magnetic short-circuit response. This breaker replaces the legacy HFD62B125 and mounts into Siemens 3VA panelboards, switchboards, and enclosures. With a 65 kAIC interrupting capacity at 480V, it includes a trip-free mechanism and is fully HACR rated.
Can the Siemens 3VA5212-6EC61-0AA0 be applied in DC power systems?
Yes, this molded case circuit breaker is rated for DC applications. It delivers an 85kA interrupting capacity at both 250VDC and 500VDC, making it suitable for industrial DC control panels and specialized distribution systems.
What frame size does the 3VA5212-6EC61-0AA0 utilize?
It is built on the Siemens 3VA52 frame. While this specific unit is rated for 125A, the 3VA52 frame family supports up to 250A, meaning it shares the same physical dimensions and accessory compatibility as other 250A-class 3VA5 breakers.
What does the 2(3) Pole designation mean for this breaker?
This indicates that the breaker contains two active poles but is housed within a three-pole physical footprint. This configuration is often required for proper busbar spacing in Siemens 3VA panelboards or for specific DC wiring schemes.
How does the adjustable magnetic trip function work on the 3VA5212-6EC61-0AA0?
The thermal-magnetic trip unit features a fixed thermal element for overload protection and an adjustable magnetic element for instantaneous short-circuit protection. This allows electricians to coordinate the instantaneous trip threshold with downstream devices and motor inrush currents.
Which distribution equipment is the 3VA5212-6EC61-0AA0 designed for?
This breaker is engineered for use in Siemens 3VA series panelboards, switchboards, and approved standalone enclosures.
How is the 3VA5212-6EC61-0AA0 secured within a panelboard?
It is a traditional panel-mount breaker that bolts directly to the chassis or bus of compatible Siemens 3VA distribution equipment. It uses lug terminals for secure wire connections.
Is the 3VA5212-6EC61-0AA0 suitable for reverse feed applications?
Yes, Siemens 3VA5 thermal-magnetic circuit breakers are UL listed for reverse feed applications. This allows line power to be connected to either the top or bottom terminals without compromising safety or trip performance.
What is the maximum AC voltage supported by the 3VA5212-6EC61-0AA0?
This breaker is rated for up to 600VAC, providing a 25kAIC interrupting rating at that maximum voltage. It is also fully rated for 480VAC systems with a higher 65kAIC interrupting capacity.
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Review summary
Customers rate this product 4.8 out of 5 based on 8 reviews.