Bussmann FNA-1 Series Midget Time-Delay Fuse, 125V

Bussmann FNA-1 Series Midget Time-Delay Fuse, 125V

The Bussmann FNA-1 Series Midget Time-Delay Fuse is a compact 125V overcurrent protection device engineered for control circuits, control transformers, and equipment that requires dependable time-delay fuse protection. This FNA-1 midget-style TD (time-delay) fuse is built to withstand momentary inrush current and brief overload conditions without nuisance opening, while still interrupting the circuit reliably under sustained fault or overcurrent conditions. This listing is available across the FNA-1 series amperage lineup, with amp ratings spanning from 0.8A through 1.6A, so the correct rating can be matched to the specific circuit or equipment being protected. Sized to fit standard midget fuse holders and fuse blocks, it offers a space-saving overcurrent protection solution for panels and equipment with limited mounting space. It is manufactured by Bussmann, a recognized supplier of fuses and circuit protection products for commercial, industrial, and OEM electrical systems.

Key Features

• Voltage Rating: 125V rating suited for control circuits, control transformers, and other low-voltage equipment protection applications where a 125V-rated fuse is required.
• Amp Rating Range: Available in FNA-1 series amp ratings from 0.8A to 1.6A, allowing the fuse to be matched precisely to the load and protection requirements of the circuit.
• Midget Fuse Form Factor: Compact midget-style body sized to fit standard midget fuse holders, fuse blocks, and disconnect switches, making it ideal for space-constrained panels and equipment.
• Time-Delay (TD) Operation: Time-delay design allows the fuse to ride through brief inrush current and temporary overload conditions without nuisance opening, while still opening reliably to protect the circuit under sustained overcurrent conditions.
• FNA-1 Series Designation: Part of the Bussmann Fusetron FNA-1 series, a lineup of midget time-delay fuses covering multiple amp ratings within a common form factor and voltage rating.
• Bussmann Manufactured: Produced by Bussmann, a recognized manufacturer of fuses and circuit protection components, for applications requiring consistent, dependable fuse performance.

Technical Specifications

• Voltage Rating: 125V
• Amp Rating Options: 0.8A, 1.5A, 1.6A
• Series: FNA-1 (Fusetron)
• Fuse Type: Midget Time-Delay (TD)

Typical Applications

• Control Circuit Overcurrent Protection
• Control Transformer Protection
• Midget Fuse Holders and Fuse Blocks
• Commercial and Industrial Electrical Equipment
• Panelboard and Control Panel Fuse Protection
• OEM Equipment Circuit Protection

Why Bussmann?

Bussmann is a widely recognized manufacturer of fuses and circuit protection components used across commercial, industrial, and OEM electrical systems. The FNA-1 Series Midget Time-Delay Fuse reflects Bussmann's focus on dependable overcurrent protection, combining a compact midget fuse form factor with time-delay (TD) performance rated for 125V applications across a range of amp ratings from 0.8A to 1.6A. Choosing Bussmann fuse products helps electrical professionals maintain consistent, code-compliant circuit protection across control circuits and equipment that depend on reliable fuse performance.