Designed for the VL Series NG Frame, the Siemens NNX3B100 is a 3-pole, 1000A bolt-on molded case circuit breaker. Built for commercial and industrial environments, it delivers robust overcurrent protection. This non-interchangeable breaker installs into Siemens P4 and P5 panelboards, switchboards, and motor control centers. It supports reverse feed applications and is replaced by the 3VA6610-5HN31-0AA0 using a mounting strap kit.
What equipment is compatible with the Siemens NNX3B100?
This bolt-on breaker is designed for installation in Siemens P4 and P5 panelboards, Siemens switchboards, and motor control centers.
What is the modern replacement for the NNX3B100?
The NNX3B100 is replaced by the Siemens 3VA6610-5HN31-0AA0. A mounting strap kit is required to install the newer 3VA series breaker in existing enclosures.
Are terminal lugs included with the NNX3B100?
No, terminal lugs are not included with this breaker. You must source the appropriate lug kits separately based on your conductor size and material.
What type of trip unit does the NNX3B100 use?
It features a non-interchangeable thermal magnetic trip unit with fixed thermal and adjustable magnetic settings, providing long-time and instantaneous (LI) protection.
What frame group does the NNX3B100 belong to?
The NNX3B100 is part of the Siemens VL Series frame group. It is built on a 1200A maximum frame size, though this specific unit is rated for 1000A.
Is the NNX3B100 suitable for reverse feed applications?
Yes, this breaker supports reverse feed applications, allowing it to be back-fed when installed in compatible panelboards or switchboards.
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