Cooper Bussmann Power-Distribution Blocks Offer IP20 Protection and High SCCR
 

Cooper Bussmann’s series of enclosed finger-safe power-distribution blocks (abbreviated PDBFS) offers both a high short-circuit current rating (SCCR) and enhanced shock protection. Enhanced shock protection clearly means greater safety, but what exactly does high SCCR mean to you? NEC and UL 508A SCCR marking requirements specify that industrial control panels, industrial-machinery electrical panels, and certain HVAC equipment must be marked with an assembly SCCR based on the lowest-rated component in the assembly. The Cooper Bussmann PDBFS has up to a 200-kA rating—enabling your power-distribution block to be one of the highest-rated devices in the panel.

The PDBFS series is listed to UL 1953 for minimum spacing requirements of at least 1” through air and 2” over surface as required for UL 508A industrial control-panel feeder applications. Listed products require a simple check to ensure that the product is used in accordance with its listing and labeling. If a product is recognized but not listed, the conditions of acceptability must be investigated to ensure it is suitable for the specific application, and then the process description must be documented in the manufacturer’s procedure for the assembly. Since the PDBFS series is listed, it meets the requirements and therefore does not need investigation and procedure documentation.

Other features of the PDBFS include:

  • Enhanced electrical safety, which meets the IP20 finger-safe rating under specific conditions.

  • Easy panel-mounting since the PDBFS may be ganged for flexible multi-pole installations. The small footprint saves panel space; the blocks may be stacked side by side and still meet 1” and 2” spacing requirements.

  • Simple and fast installation with either DIN-rail or panel-mount ability; plus, the captive terminal screws are backed out at the factory, further enhancing installation speed.

  • Suitability for installation in wireways to meet the 2005 NEC 376.56(B) requirement.

Contact the sales engineers at McNaughton-McKay to discuss how the safety-enhancing Cooper Bussmann PDBFS power-distribution blocks can help you meet industry standards and requirements.