TR150R – GOULD 150A 600V CLASS RK5 TIME DELAY FUSE

Yes — Class RK5 is a standardized form factor, so the Gould TR150R (150A, 600V, time-delay) is a direct dimensional and electrical replacement for any other Class RK5 fuse of the same amperage and voltage rating, regardless of brand. Always confirm the interrupting rating (200kA on this unit) meets or exceeds your system's available fault current before substituting.

Electric motors draw 6–8× their full-load current during startup (inrush). A time-delay fuse holds through this brief inrush without nuisance tripping, while still providing fast, reliable protection against sustained overloads and short circuits. The TR150R's time-delay characteristic makes it well-suited for motor branch-circuit and feeder protection per Canadian Electrical Code requirements.

The Gould TR fuse series has transitioned through several ownership changes (Gould → Ferraz Shawmut → Mersen), and availability of specific legacy part numbers can vary. Northern Breaker Group specializes in obsolete and hard-to-find electrical components — contact our Calgary, Edmonton, or Vancouver counters for current stock and lead-time information, or request a quote online.