The Bussmann BP/SC‑20 is a SC Series Class G time‑delay, current‑limiting melamine tube fuse designed to provide dependable overcurrent protection for high‑voltage AC electrical systems. Manufactured by Bussmann (Eaton), this fuse is engineered for applications where durability, high interrupt capacity, and controlled time‑delay response are essential.

The time‑delay characteristic allows the BP/SC‑20 to withstand short‑duration inrush currents commonly associated with motors, transformers, and HVAC equipment without nuisance opening. When abnormal overloads or short‑circuit conditions occur, the fuse responds quickly to interrupt the circuit, helping protect wiring, components, and equipment from damage.

Its melamine (mel tube) body provides superior mechanical strength and thermal resistance compared to glass fuses, making it well‑suited for industrial and commercial environments where vibration, heat, or physical stress may be present. The SC Series also incorporates a rejection‑style design, which helps prevent the installation of incorrect amp‑rated fuses and reduces the risk of over‑fusing.

Nickel‑plated end caps ensure reliable electrical contact and corrosion resistance for consistent long‑term performance. Supplied in a convenient 2‑count retail card, the BP/SC‑20 is ideal for maintenance inventories, service applications, and replacement needs.

Key Features

• Time‑delay (slow‑blow) operation allows temporary inrush currents without nuisance blowing
• Current‑limiting design reduces let‑through energy during fault conditions
• Melamine tube construction offers enhanced strength and heat resistance
• High 600‑volt AC rating for demanding power applications
• Rejection‑style fuse helps prevent improper replacement
• Nickel‑plated end caps provide dependable conductivity and corrosion resistance
• Compact Class G cartridge design conserves panel space
• Retail blister packaging supports easy handling and inventory control

Specifications

• Manufacturer: Bussmann (Eaton)
• Series: SC
• Model Number: BP/SC‑20
• Fuse Type: Time‑Delay / Slow‑Blow, Current‑Limiting
• Current Rating: 20 Amps
• Voltage Rating: 600 VAC
• Voltage Rating (DC): 170 VDC
• Interrupt Rating:
  • 100,000 amps (100 kA) at 600 VAC
  • 10,000 amps (10 kA) at 170 VDC
• Body Material: Melamine (mel tube)
• End Cap Material: Nickel‑plated metal
• Fuse Class: Class G
• Mounting Style: Fuse holder or clip
• Indication: Non‑indicating (opaque body)
• Packaging: 2 fuses per card
• Certifications: UL Listed, CSA Certified
• Application Category: Branch‑circuit and supplemental overcurrent protection

Applications

• Industrial control panels
• HVAC equipment and systems
• Motors and motor‑driven machinery
• Transformers and inductive loads
• Commercial and industrial power distribution
• Electrical branch circuits
• OEM equipment replacement
• Maintenance, service, and repair operations