Siemens NEB2B080B Molded Case Circuit Breaker

This bolt-on breaker is designed for use in Siemens P1, P2, P3, P4, and P5 panelboards. It requires the appropriate mounting hardware or branch connector kits depending on the specific panelboard series and bus configuration.

The factory-installed load lugs accept 14 AWG to 1/0 AWG wire. They are rated for both copper (Cu) and aluminum (Al) conductors, giving panel builders flexibility in sourcing wire for 80-amp circuits.

Yes, in addition to AC networks, this breaker is UL rated for direct current systems up to 250VDC, delivering a 35kA interrupting capacity for DC applications.

It features a fixed thermal magnetic trip unit with Long-Time and Instantaneous (LI) trip functions. Both the thermal overload and magnetic short-circuit trip points are factory fixed and non-adjustable, providing reliable, tamper-proof protection.

This is a bolt-on molded case circuit breaker. It secures directly to the panelboard bus using bolted connections, providing a secure, vibration-resistant installation compared to plug-on alternatives.

Both share the same physical footprint and mount in the same Siemens panelboards, but the HEB frame offers a higher interrupting capacity (AIC) than the standard NEB frame. If your system fault current exceeds the NEB rating, an HEB breaker may be required.

Yes, this 2-pole breaker is typically used to protect 240V or 480V single-phase circuits, or to protect two legs of a three-phase system depending on the panelboard bus configuration.

The thermal magnetic trip unit is calibrated for a standard ambient operating temperature of 40 degrees Celsius (104 degrees Fahrenheit).