Siemens 3VA5135-5EC31-0AA0 Molded Case Circuit Breaker

It is designed for use in Siemens 3VA panelboards and switchboards that accommodate 3VA51 125-amp frames.

The -5 in the catalog number indicates a Class M rating. This provides a medium-tier interrupting capacity suitable for commercial and industrial distribution systems requiring up to 35kA fault protection at 480VAC.

It features a TM230 thermal-magnetic trip unit. This specific unit provides fixed long-time thermal overload protection and adjustable instantaneous magnetic short-circuit protection.

Yes. While the thermal overload is fixed at 35 amps, the instantaneous magnetic short-circuit pickup is adjustable to help coordinate with other protective devices in your system.

Yes, this 3-pole breaker is rated for up to 500VDC. It is often used in DC control circuits, battery systems, or solar applications requiring high DC interrupting capabilities.

This is a panel-mount breaker that utilizes a bolt-on connection. It is designed to be securely bolted directly to the bus or mounting plate in compatible Siemens enclosures, ensuring a rigid and reliable electrical connection.

The LI designation means the breaker provides Long-Time protection against sustained overloads and Instantaneous protection to quickly clear high-fault short circuits, protecting downstream wiring and equipment from thermal damage.

It is part of the Siemens 3VA51 frame family. This frame size covers molded case circuit breakers up to a 125A maximum continuous current rating, allowing for standardized mounting footprints across multiple amperages.

The 0AA0 suffix indicates that this is the standard version of the breaker, supplied without factory-installed auxiliary switches, shunt trips, or undervoltage releases.