Siemens NEG3B060L Molded Case Circuit Breaker

The 60A rating is the breaker's nominal current rating. Select it based on the circuit load, conductor ampacity and applicable circuit-sizing requirements, rather than treating 60A as the exact point at which it trips.

Compare available fault current at the installation point with the interrupting rating at your system voltage: 85kA at 240VAC, 35kA at 480VAC or 22kA at 600Y/347VAC. Available fault current must not exceed the applicable rating.

The thermal element provides long-time overload protection, while the magnetic element provides instantaneous short-circuit protection. Both elements are fixed, so select the breaker for the required protection rather than planning to adjust its trip settings.

The lugs accept copper or aluminum conductors from 8 AWG through 1/0 AWG. Use that range to check terminal acceptance, then select conductor size according to ampacity and installation requirements.

Yes. Its reverse-feed construction permits power to enter from the opposite terminal end, giving you flexibility in supply routing. Keep the supply and load arrangement clearly marked during installation.

The three-pole configuration provides overcurrent protection for the three phase conductors of a three-phase circuit. The neutral connection is not applicable, so route the circuit neutral separately from the breaker's phase connections.

The 40C temperature rating is the ambient reference for the breaker's thermal performance. Consider the temperature at the breaker location when evaluating its 60A rating for the application.

UL 489 covers molded case circuit breakers used for overcurrent protection. The UL and CSA approvals are relevant when your project requires those certifications for the circuit breaker.

The Siemens NEG3B060L is rated for 240VAC, 480VAC and 600Y/347VAC. The 600Y/347VAC rating applies to grounded-wye systems, so match both the system voltage and grounding configuration when selecting it.