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The OTN30 – GOULD 30A 250V CLASS K5 ONE-TIME FUSE is designed for reliable protection in electrical circuits. With a 30 amp capacity and 250 volts rating, this fuse ensures safety and performance for various applications. Its one-time use design simplifies maintenance, making it an essential component for any electrical setup.
The OTN30 is a one-time (non-renewable) Class K5 fuse. While some Class K5 holders also accept Class H or Class RK5 fuses of the same 30A/250V rating, upgrading to a current-limiting Class RK1 or RK5 renewable fuse is possible in many applications and may offer enhanced protection. We recommend confirming your holder's class rating and your circuit requirements before substituting — contact us and we'll help you find the right fit.
Gould's OTN series fuses are considered a legacy/obsolete product line, but Northern Breaker Group specializes in sourcing hard-to-find and discontinued electrical components. We can help locate genuine Gould OTN30 stock or identify a direct modern equivalent (e.g., Bussmann NON-30 or Ferraz Shawmut OTN30) that matches the 30A, 250V, Class K5, 50kA specification. Reach out for availability and a quote.
Class K5 and K1 fuses share the same physical dimensions but differ in interrupting rating and let-through current — Class K1 fuses have a higher interrupting rating (up to 200kA) and lower let-through energy, offering greater equipment protection. The Gould OTN30 is rated at 50kA, which is typical for Class K5. If your system has available fault current exceeding 50kA, or if your equipment specifies a higher interrupting rating, you may need a Class K1 or current-limiting fuse instead. Contact us to review your application.
