Designed for heavy-duty commercial applications, the Siemens HEG3B025L is a 3-pole, 25A molded case circuit breaker from the Sentron VL family. It integrates seamlessly into Siemens P4 and P5 panelboards, switchboards, and motor control centers. Featuring a non-interchangeable thermal-magnetic trip unit, it delivers reliable LI protection. Rated for 65 kAIC at 480VAC, this unit-mount breaker is HACR and HID lighting rated. It is officially replaced by the newer 3VA5125-6ED36-0AA0.
HACR Rated, High Interrupting Capacity, Reverse Feed, Non-Interchangeable Trip
Product FAQs
6 answers
What panelboards and equipment are compatible with the HEG3B025L?
This 3-pole breaker is designed for installation in Siemens P4 and P5 panelboards, as well as compatible switchboards, motor control centers, and standalone enclosures.
What is the modern replacement for the HEG3B025L circuit breaker?
Siemens has officially replaced the HEG3B025L with the newer 3VA5125-6ED36-0AA0 molded case circuit breaker from the 3VA51 frame series.
What wire sizes are accepted by the terminals on the HEG3B025L?
The factory lugs on this breaker accept wire gauges ranging from 14 AWG up to 1/0 AWG. The terminals are rated for use with both copper and aluminum conductors.
Can the HEG3B025L be used in DC voltage systems?
Yes, this breaker is rated for DC applications. It provides a 30kA interrupting capacity at both 250VDC and 500VDC.
Are the thermal and magnetic trip settings adjustable on this breaker?
No, the HEG3B025L features a fixed thermal magnetic trip unit. Both the long-time and instantaneous trip functions are factory set and non-adjustable.
Does the HEG3B025L plug into the panel busbar?
No, this is a unit mount breaker with a feed-thru connection. It must be bolted or hardwired into the panelboard, switchboard, or enclosure rather than plugging directly onto a busbar.
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