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Q: What is required to cross a Circuit Breaker? A: 1. Current Rating and 2. Trip Curve (B, C, D, K, UC-K, Z, UC-Z, etc) Q: What is the Difference between the S200 Series and the S500 Series Miniature Circuit breakers? A: The S200 Series Circuit Breakers don't satify the UL requirement due to the Isolation Barriers for protection on a feeder circuit. The S200 Series Circuit Breakers are a less expensive means of current protection. The S500 series K type Circuit Breakers have adjustable cu …

Q: What is a harmonic? A: A harmonic is a sinusoidal component of the voltage wave from and is a multiple of the fundamental frequency (60Hz in the US).  Non-linear loads such as diode and thyristor rectifiers, other power electronic converters and fluorescent lights cause some distortion of AC line voltage and current. This distortion is called electrical harmonic. High harmonic content may disturb or damage the sensitive electronic equipment connected to the same AC line network.   …

Q: What is a regenerative AC drive? A: A regenerative AC drive (also known as four quadrant) is a drive with the ability to return energy (power) back to the supply line. The ACS800-U11/-17 has line side IGBT supply makes this possible and an active filter that keeps the supply a clean sinusoidal wave form. Conventional non-regenerative AC drives have a passive diode supply that cannot return energy to the supply line. The ability to return energy to the supply line allows you to save energy by …

Q: Do The ACS550-PC and ACS550-PD Models Fit In Tight Spaces? A: The ACS550-PC (with circuit breaker) and ACS550-PD (with disconnect switch and fuses) packages in both NEMA 1 and NEMA 12 are offered up to 60 HP at 480V, and 30HP at 240V. The units are extremely compact and narrow, with a smaller footprint than competitive equivalents. This feature makes them ideal for overcrowded electrical rooms or mezzanines - and for mounting right onto a machine or a column on the plant ?oor. Q: Can I Ins …

Q: What is the ACS800-PC? A: The ACS800-PC is a new cabinet drive offering for the ACS800 product family.  It uses the ACS800-U4 drive module package in a 2000mm Rittal enclosure.   Q: What does "PC" stand for? A: The acronym "PC" is used for Package with Circuit Breaker.  This is borrowed from the ACH550-PC as the construction is basically the same.  In the ACS800-PC product offering the circuit breaker is promoted and used as a line disconnect.   …