Programmable circuit breaker for hazardous locations
Phoenix Contact’s circuit breaker multichannel (CBM) is a programmable circuit breaker that can manage multiple circuits in a single, compact device. It has received Class I, Division 2 approval, which makes it suitable for use in hazardous locations such as oil refineries, offshore platforms, and wastewater treatment facilities. The CBM is available in four- and eight-channel versions, so it can manage up to eight circuits. Each channel has multiple nominal current ratings from 0.5 to 10 A, with an LED status indication that lets users monitor the trip status of each circuit-breaker channel. The CBM measures just 41 mm wide, so it occupies minimal DIN rail space. The CBM makes it quick and easy to adjust nominal current trip level of the circuit breaker. After hooking the breaker up to the appropriate loads and turning the adjustment dial to the maximum level of 10 A, the user slowly decreases the current by one increment at a time. For added safety, the CBM has a cascaded channel start-up, with a 100-millisecond delay between each channel. This helps avoid inadvertent shutdowns.
– Edited by CFE Media. See more Control Engineering energy and power products.