The Bussmann BP/GMA‑5A fuse is a high‑performance, fast‑acting glass cartridge fuse engineered to protect sensitive electronic circuits from damaging overcurrents. Known for its precision, reliability, and compact size, this 5×20mm GMA‑series fuse is widely used in consumer electronics, appliances, automotive accessories, marine equipment, and general low‑voltage AC applications. Its fast‑blow design ensures instant interruption during fault conditions, helping safeguard valuable components and equipment.

Constructed with a durable glass tube and robust metal end caps, the BP/GMA‑5A fuse offers dependable performance in environments where accurate circuit protection is essential. As part of Eaton/Bussmann’s long‑trusted GMA Series, it meets key regulatory approvals and is commonly specified by manufacturers for replacement and OEM applications. Whether you’re servicing household equipment, building custom electronics, or maintaining onboard electrical systems, this fuse delivers the safety, consistency, and long‑term reliability expected from Bussmann products. 

Key Features

• Fast‑Acting Protection: Designed to open quickly under overload conditions, making it ideal for sensitive circuitry and precision electronics. 
• Glass Cartridge Design: Clear glass tube construction allows easy visual inspection for blown elements. 
• Standard 5×20mm Size: Compatible with common fuse holders and equipment specifications using the metric miniature footprint. 
• Reliable Brass/Nickel‑Plated End Caps: Ensures stable electrical contact and long‑term corrosion resistance. 
• Low Breaking Capacity: Ideal for low‑energy applications where precision protection is required. 
• General‑Purpose GMA Series: Part of a widely used and industry‑standard fuse family with UL and CSA certifications. 
• Suitable for AC and DC Circuits: Rated for 125VAC operation with additional DC usability depending on application requirements. 

Specifications

Electrical Data

• Current Rating: 5 Amps 
• Voltage Rating: 125 VAC 
• Speed: Fast‑acting (fast‑blow) response time for instant protection. 
• Breaking Capacity: Low breaking capacity suitable for low‑energy circuits. 
• Fuse Type: Glass cartridge fuse requiring compatible holder. 

Physical Characteristics

• Dimensions: 5 mm diameter × 20 mm length. 
• Body Material: Glass tube with brass or nickel‑plated end caps. 
• Mounting Style: Holder‑mounted, standard 5×20mm format. 

Certifications

• UL Listed & CSA Certified: Ensures compliance with safety and performance standards. 
• GMA Series Compliance: Meets UL/CSA 248‑14 miniature fuse requirements. 

Applications

The Bussmann BP/GMA‑5A fuse is engineered for broad usage across residential, automotive, and commercial equipment—especially where compact and sensitive circuitry requires fast‑acting overcurrent protection.

Common Uses

• Consumer Electronics: Audio systems, power supplies, chargers, and other sensitive devices that need precise protection from overloads.
• Household Appliances: Small appliances and electronics with delicate internal components. 
• Automotive Accessories: Often used in aftermarket or accessory circuits for older or non‑standard installations.
• Marine / Onboard Electrical Systems: Frequently used in modern boat accessories such as lighting systems, audio components, and auxiliary electronics.
• General AC and DC Applications: Suitable for low‑energy circuits requiring a compact, fast‑acting fuse solution.

Ideal for Protecting:

• Control boards
• Instrumentation panels
• Delicate electronic components
• Low‑power AC lines
• Internal device circuitry