Built for demanding environments, the Siemens NEB1B030B is a 1-pole, 30A molded case circuit breaker from the Sentron series. It utilizes thermal-magnetic trip technology to ensure consistent long-time and instantaneous protection for commercial facilities. This unit mounts into Siemens P1, P2, P3, P4, and P5 panelboards via a secure bolt-on connection. For modern upgrades, it is replaced by the 3VA4130-5ED14-0AA0 using a mounting strap kit.
Which panelboards are compatible with the Siemens NEB1B030B circuit breaker?
This bolt-on breaker is designed specifically for Siemens Sentron P1, P2, P3, P4, and P5 panelboards. It is not compatible with standard residential load centers.
Can the NEB1B030B be used in direct current (DC) applications?
Yes, in addition to AC systems, this breaker is approved for 125VDC applications. When used in DC circuits, it maintains a 35kAIC interrupting capacity.
Do I need to purchase separate lugs for the NEB1B030B?
No, this breaker comes with factory-installed load side lugs that accept 14 AWG to 1/0 AWG copper or aluminum wire.
How does the NEB frame compare to the HEB frame?
Both are physically identical bolt-on breakers for Siemens panelboards, but the HEB frame provides a higher short-circuit interrupting rating (AIC) than the standard NEB frame.
Can I mount the NEB1B030B on a standard DIN rail?
No, the NEB1B030B requires a bolt-on connection to a compatible Siemens panelboard bus and cannot be mounted on a DIN rail.
Does the NEB1B030B provide ground fault or arc fault protection?
No, this is a standard thermal-magnetic circuit breaker that provides overload and short-circuit protection. It does not include GFCI or AFCI functionality.
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Review summary
Customers rate this product 5.0 out of 5 based on 3 reviews.