Offering a 2-pole configuration within a standard 3VA53 frame, this 300A Siemens MCCB ensures safe operation for commercial electrical systems. It utilizes a TM230 thermal-magnetic trip unit, providing fixed thermal and adjustable magnetic protection. This unit installs into Siemens 3VA panelboards and switchboards. It is an ideal retrofit solution, replacing discontinued JD62B300 breakers when paired with the proper mounting kit. It features a 35kAIC rating at 480VAC and is HACR rated.
Auxiliary Switch, Shunt Trip, Undervoltage Release, Alarm Switch, Motor Operator, Handle Lock, Padlock Attachment, Busbar System
Accessories
None (Nut Keeper)
Standards
IEC 60947-2, UL 489, HACR
Approval
CE, CSA, UL, VDE
Temp Rating
-25C to 70C
Construction Features
HACR Rated, Current Limiting, 2-Pole in 3-Pole Housing
Product FAQs
7 answers
Can the 3VA5330-5EC61-0AA0 replace older Siemens JD frame breakers?
Yes. The 3VA53 frame is the direct replacement for legacy 400A JD frame breakers, such as the JD62B300. You will need the appropriate 3VA mounting strap kit to retrofit this breaker into existing Siemens switchboards or panelboards.
Are line and load lugs included with this specific catalog number?
No. The 0AA0 suffix indicates this breaker ships from the factory without lugs. You must purchase the appropriate line and load lugs separately based on your wire size and material requirements.
What type of trip unit is installed in the 3VA5330-5EC61-0AA0?
This breaker is equipped with a TM230 thermal magnetic trip unit. It provides fixed thermal overload protection and adjustable instantaneous short-circuit protection.
What is the magnetic trip adjustment range for this 300A breaker?
The TM230 trip unit features an adjustable instantaneous magnetic trip that can be set between 5 and 10 times the continuous current rating. For this 300A breaker, the magnetic trip range is 1500A to 3000A.
Is this 2-pole breaker built on a 2-pole or 3-pole frame footprint?
This breaker is a 2-pole device built into a standard 3-pole 3VA53 frame footprint. It occupies the same physical space as a 3-pole breaker when installed in Siemens 3VA panelboards or switchboards.
Can this breaker be used in DC power applications?
Yes. This thermal magnetic breaker is rated for DC applications up to 250VDC, with an interrupting capacity of 50kA. For 250VDC systems, a two-pole breaker is typically used with one pole on each leg of the supply circuit according to Siemens guidelines.
Can I reverse feed the 3VA5330-5EC61-0AA0?
Yes. Siemens 3VA5 thermal magnetic circuit breakers are UL listed for reverse feed applications.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 8 reviews.