Leviton 7942-20 20A Time-Delay Plug Fuse

Leviton 7942-20 20A Time-Delay Plug Fuse

The Leviton 7942-20 is a 20 amp time-delay plug fuse built to deliver dependable overcurrent protection in electrical panels that use plug-style fuse sockets. Rated at 20A, this time-delay fuse is engineered to tolerate brief, harmless current surges — such as those from motor starting — while still opening quickly under a genuine sustained overload or short circuit. As a plug fuse, it threads directly into a standard fuse panel socket, making it a straightforward replacement part for older fuse-box installations that have not been upgraded to circuit breakers.

Key Features

• Amperage Rating: 20A rating sized to protect the connected branch circuit from overcurrent conditions.
• Time-Delay Operation: Time-delay (time-lag) construction rides through momentary inrush current from motors and other inductive loads without nuisance blowing, while still responding to a true sustained overload.
• Plug Fuse Format: Screw-in plug fuse design threads into a standard fuse panel socket for simple, tool-free installation and replacement.
• Reliable Overcurrent Protection: Provides a single-use protective element that opens the circuit when current exceeds the 20A rating, helping guard wiring and connected devices from damage.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Residential and Light Commercial Fuse Panels
• Legacy Fuse Box Overcurrent Protection
• Replacement Fuse for Older Panelboards
• Circuits Serving Motor-Driven or Inductive Loads
• General Branch Circuit Protection at 20A

Why Leviton?

Leviton is a long-established manufacturer of wiring devices and electrical components used throughout residential and commercial installations. The 7942-20 time-delay plug fuse reflects that same focus on dependable, code-familiar electrical protection, giving electricians and facility managers a straightforward way to maintain and service existing plug-fuse panels. Choosing a Leviton fuse for these replacements helps keep overcurrent protection consistent and reliable across the panel.