Bussmann FNQ-R-30 Current-limiting Time-delay Fuse, 30 A, 600 V, Ferrule End, 200 kAIC

Description

Features

• As a certified Class CC branch-circuit fuse, the FNQ-R-30 features a unique rejection tip on the end cap that physically prevents the insertion of lower-rated or mismatched midget fuses. This fail-safe mechanical design ensures that maintenance crews always replace like-for-like, preventing accidental under-protection.
• Engineered with a robust time-delay dual-element architecture, this 30-amp fuse provides a temporary "ride-through" period during severe electrical inrush currents. This specific delay curve prevents unnecessary downtime caused by the transient spikes of small motor circuits, control transformers, and inductive loads, while still delivering rapid short-circuit protection if a true fault occurs.
• Boasting a maximum voltage rating of 600V AC and a massive 200,000-amp Interrupting Rating (IR), this component is designed to safely isolate extreme electrical faults. By absorbing and containing destructive short-circuit energy before it reaches downstream automation equipment, it effectively safeguards your high-value PLCs, contactors, and control panels from catastrophic thermal failure
• Built with a high-grade melamine housing, this fuse offers superior dimensional stability, arc-quenching capabilities, and resistance to tracking in high-temperature environments. This heavy-duty shell ensures that the internal elements remain perfectly calibrated and protected against moisture, vibration, and physical degradation inside tightly packed industrial control enclosures.

Documentation & Downloads

Specifications