Designed for reliable power distribution, the HEB3B100B is a 3-pole, 100A molded case circuit breaker from the Sentron family. It provides fixed thermal and magnetic trip functions to safeguard commercial and industrial electrical systems. This bolt-on unit fits seamlessly into Siemens P1, P2, and P3 panelboards. It serves as a standard component for these panels and is eventually replaced by the HEG3B100B. Boasting a 65kAIC rating at 480VAC, it includes load side lugs and is fully HACR rated.
Can I install the HEB3B100B in a standard Siemens load center?
No. This breaker requires a bolt-on connection and is specifically designed for Siemens P1, P2, and P3 commercial panelboards. It will not fit in standard plug-on residential load centers.
What is the standard interrupting alternative to the HEB3B100B?
The NEB3B100B is the standard interrupting counterpart for this breaker. It shares the same physical footprint but has a lower short-circuit rating for systems that do not require high breaking capacity.
How does the HEB3B100B connect to the panelboard and the load circuit?
The line side features a direct bolt-on connection for mounting to the panelboard bus. The load side is equipped with factory-installed TA1EG10 mechanical lugs for terminating the conductors.
Does the HEB3B100B support field-installable internal accessories?
Yes. As part of the Siemens EG frame family, this breaker accepts UL-listed, field-installable internal accessories such as shunt trips, auxiliary switches, and undervoltage releases in its designated accessory pockets.
Are the thermal and magnetic trip settings adjustable on this unit?
No. This breaker uses a non-interchangeable thermal-magnetic trip unit with fixed long-time and instantaneous settings, meaning the trip thresholds cannot be modified in the field.
Is the HEB3B100B rated for use with HVAC equipment?
Yes. This circuit breaker carries a HACR rating, making it suitable and safety-approved for protecting heating, air conditioning, and refrigeration equipment in commercial and industrial settings.
Is the HEB3B100B suitable for reverse feed applications?
Yes. This circuit breaker supports reverse feeding, meaning power can be safely applied to the load side when required by the specific system design.
Does the HEB3B100B feature a trip-free mechanism?
Yes. It is equipped with a trip-free mechanism, ensuring the breaker will trip during an overcurrent or short-circuit event even if the handle is physically held in the ON position.
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Customers rate this product 4.0 out of 5 based on 1 review.