Engineered for commercial and industrial power distribution, the Siemens 3VA5222-5EC61-0AA0 is a 2-pole, 225A molded case circuit breaker. It delivers reliable thermal-magnetic protection with a fixed thermal and adjustable magnetic trip mechanism. This panel mount MCCB installs into Siemens P2, P3, P4, and P5 panelboards and switchboards. It serves as a drop-in replacement for legacy FXD62B225 breakers. Rated at 35kAIC at 480VAC, it features a space-saving 2-pole in 3-pole case design.
Reverse Feed, Non-Interchangeable Trip, 2-Pole in 3-Pole Housing
Product FAQs
7 answers
Which Siemens panelboards accept the 3VA5222-5EC61-0AA0 circuit breaker?
This breaker is compatible with Siemens P2, P3, P4, and P5 panelboards, as well as Siemens switchboards. Proper mounting hardware or strap kits may be required depending on the specific panelboard type.
What adjustability does the trip unit on the 3VA5222-5EC61-0AA0 offer?
It features a TM230 thermal-magnetic trip unit with fixed thermal (long-time) protection and an adjustable magnetic (instantaneous) trip setting, allowing electricians to fine-tune the short-circuit response.
Is the 3VA5222-5EC61-0AA0 suitable for DC power systems?
Yes, in addition to AC ratings, this breaker is rated for up to 500VDC with a 50kAIC interrupting capacity, making it suitable for industrial DC distribution applications.
What does the 3VA52 frame designation indicate for this breaker?
The 3VA52 designation refers to the Siemens 250A frame size. While the physical footprint matches the 250A frame, this specific 3VA5222-5EC61-0AA0 model is factory-calibrated for a maximum continuous current of 225A.
How does the pole configuration affect installation for the 3VA5222-5EC61-0AA0?
Although it is a 2-pole breaker, it is built into a 3-pole frame size (often denoted as 2(3)-pole). Panel builders must ensure the panelboard spacing and mounting hardware accommodate the physical dimensions of a 3-pole 3VA52 frame.
What do the middle characters '5EC' in the 3VA5222-5EC61-0AA0 catalog number signify?
In the Siemens 3VA nomenclature, the '5' indicates a medium breaking capacity (Class M, 35kAIC at 480V), and the 'EC' designates the TM230 thermal-magnetic trip unit.
What safety protection functions are included in the 3VA5222-5EC61-0AA0?
This breaker provides standard LI (Long-Time and Instantaneous) protection. The long-time function protects against sustained overloads, while the instantaneous function protects against short-circuit faults.
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Review summary
Customers rate this product 4.8 out of 5 based on 8 reviews.