Mersen A4J30 Fuse Amp-Trap Class J 600V 30A Fast-Acting, 0.81 Inch Diameter, PolyTube Body

Description

Features

• Engineered as a premium, highly current-limiting component, the A4J30 responds within milliseconds to isolate major faults. By drastically restricting peak let-thru current, it safeguards downstream distribution panelboards, bus ducts, and sensitive circuit breakers from catastrophic thermal and mechanical deformation.
• Featuring a precise, fast-acting response curve, this 30-amp fuse provides instant clearing for overcurrent events without an intentional time delay. This quick-trip execution is purpose-built to defend critical, low-inrush components like electrical resistance heaters, capacitor banks, and general branch feeders against sustained thermal damage.
• Boasting robust operational limits of 600V AC and 300V DC, this device seamlessly bridges classic manufacturing lines and modern green energy sub-systems. It functions perfectly inside industrial control panels, commercial switchboards, and heavy-duty disconnects, helping purchasing managers consolidate their spare parts inventory.
• With a staggering 200,000-amp AC interrupting rating (and 100,000-amp DC rating), this component safely dampens high-energy electrical blasts. This superior capacity ensures compliance with rigid National Electrical Code (NEC) requirements for high available fault currents, keeping your plant facilities fully insurable.

Documentation & Downloads

Specifications