Eaton CB1633B120480K5 Pringle pressure switch - UL Listed

The CB1633B120480K5 delivers a 1600A amperage rating with a 480V system voltage in a three-pole, bottom-feed package. This combination reduces the need for multiple disconnects, improves protection coordination, and supports reliable motor starts in heavy industrial applications. It is well-suited for large motor feeders and distribution panels where uptime matters. The packaging is designed for ease of installation alongside standard switchgear, enabling faster commissioning and reducing commissioning delays in new builds or retrofit projects. It benefits from compatible Eaton accessories and straightforward field retrofit options to extend service life. An integrated 1 NO-1 NC contact arrangement with an electrical trip and charge-before-close mechanism enhances safe sequencing and fault containment. This reduces arc-flash exposure in control circuits and simplifies integration with interlock safety schemes across conveyors, pumps, and processing lines. The design supports reliable discharge timing and reduces nuisance trips in fluctuating loads, contributing to lower maintenance costs. With NEMA ratings of 1, 3R, 4, and 12, the switch enclosure tolerates damp, dusty, and wash-down environments while maintaining enclosure integrity. This expands applicability to outdoor substations, process areas, and rugged indoor spaces where protection standards drive compliance. The three-pole construction ensures consistent performance across phases, and the bottom-feed configuration simplifies wiring routes. Optional ground fault relay, blown fuse detection, single-phase protection, auxiliary contact provisions, Kirk provisions, and other catalog notes enable a tailored protection strategy. These features shorten diagnostic cycles, improve fault visibility, and support regulatory reporting for safety and reliability programs. In retrofit projects, modular options minimize downtime while aligning with existing protection schemes. Bottom-feed fuse configuration, three-wire operation, and a bottom-feed design simplify wiring and installation in tight spaces. This reduces installation time, minimizes wiring errors, and enables cleaner panel layouts, which translates to lower labor costs during upgrades or new builds. Rugged build quality, UL Listed certification, and a one-year warranty—from Eaton Selling Policy 25-000—provide regulatory confidence and predictable maintenance planning. The combination of durable construction and clear documentation supports long-term asset management for manufacturing facilities, utilities, and heavy industry.