Siemens NEB1B015B Molded Case Circuit Breaker

The NEB1B015B is designed for use in Siemens P1, P2, and P3 panelboards. It features a bolt-on connection type for secure mounting directly to the panel bus.

The factory-installed lugs on the NEB1B015B accept wire gauges from 14 AWG up to 1/0 AWG. They are rated for use with both copper and aluminum conductors.

Yes, this thermal-magnetic breaker is rated for DC applications. It provides an interrupting capacity of 35kAIC at 125VDC, making it suitable for specific direct current control and distribution circuits.

Both NEB and HEB frames share the same physical dimensions and mount in the same Siemens panelboards. The primary difference is the interrupting rating, with the HEB frame offering a higher maximum short-circuit rating than the standard NEB frame.

This breaker features fixed long-time and instantaneous (LI) trip functions. It uses thermal-magnetic trip technology, relying on a bimetallic strip for overload protection and an electromagnetic assembly for immediate short-circuit tripping.

No, the NEB1B015B is a bolt-on molded case circuit breaker. It is specifically designed to bolt directly to the busbar in Siemens P1, P2, and P3 panelboards and cannot be mounted on a DIN rail.

For 277VAC commercial lighting and distribution circuits, the NEB1B015B provides an interrupting rating of 35kAIC. It is also rated for 22kAIC at 347VAC for industrial applications.

The instantaneous magnetic trip function in the NEB1B015B responds immediately to high-level fault currents, such as a short circuit. This rapidly clears the fault to prevent equipment damage and reduce fire hazards in the electrical system.