Product description

The Bussmann ECSR12 Bullet Fuse is a premium time-delay cartridge designed for heavy-duty industrial and commercial circuit protection. As a Class RK5 fuse, it is specifically engineered to handle the temporary high-current surges typical of motor starts and transformer inrush, while still providing rapid response to sustained overloads or short circuits. This time-delay feature is essential for preventing nuisance blowing in systems where inductive loads are present. With a high interrupting rating of 200,000 Amps, the ECSR12 provides a robust safety barrier that protects sensitive equipment and personnel from the catastrophic effects of electrical faults. Its dual-element construction ensures consistent performance and energy-efficient operation across its entire service life.

Product highlights

• Dual-Element Design: Provides a 10-second time delay at 500% of the rated load to accommodate motor starting surges.
• Current Limiting: Effectively reduces the magnitude of peak fault currents to protect downstream system components.
• Superior Safety Rating: Features a massive 200kA interrupting rating to safely handle high-energy electrical faults.
• Versatile Application: Suitable for branch circuit protection, motor control centers, and HVAC disconnects.
• Class RK5 Protection: Meets stringent UL standards for safety and reliability in critical power distribution systems.

Specs

• Manufacturer: Bussmann
• Manufacturer Part Number: ECSR12
• Amperage: 12 Amps
• Voltage: 600V AC
• Class: RK5
• Interrupting Rating: 200,000 AIC
• Type: Time-Delay / Dual-Element

Direct replacement models

Bussmann FRS-R-12, Mersen TRS12R, Littelfuse FLSR012, Edison ECSR12.

You will receive the same product or an OEM-Equivalent that meets the highest standard of the OEM with warranty that will be a direct-fit. Manufactured with rigorous industry standards and certified in the USA with superior quality to the OEM.