Siemens S44B Panelboard Enclosure Door

Siemens S44B Fas-Latch Type 1 Front is a 44-inch-long, 20-inch-wide panelboard front door designed for Siemens P1/P2 NEMA Type 1 panelboard enclosures. Constructed from 16-gauge steel and intended for surface-mount installation, the S44B front provides a sturdy, finished exterior that mates with Siemens panelboard trims. It is specified for use with 250 A (S1) Sentron convertible main lug/main breaker panelboards, offering reliable access for maintenance while keeping the enclosure interior protected when closed. The Fas-Latch front mechanism delivers secure latching and straightforward operation, supporting routine service and inspection without sacrificing safety. As a standard trim piece within Siemens' S-series ecosystem, the S44B is designed to fit typical P1/P2 NEMA Type 1 panelboard enclosures, helping technicians preserve a consistent look and compatibility across installations. This door is suitable as a replacement or upgrade for aging or damaged fronts, ensuring that the exterior of the panel remains consistent with Siemens' specification for fit and finish.