1SCA022697R2690 ABB 50 A aM NH000 DIN Motor Fuse Link 500 V

Why Choose the ABB OFAF000AM50 50 A aM Motor DIN Fuse Link?

The ABB OFAF000AM50 is a compact HRC DIN fuse link designed specifically for short-circuit protection of industrial motor circuits. Identified by ABB order code 1SCA022697R2690, it forms part of the ABB 311002-Fuses And Fusebases product group and combines a 50 A rated current with the compact NH000 / DIN size 000 fuse format.

The OFAF000AM50 uses an aM utilisation category intended for motor circuit protection. Its operating characteristic accommodates the temporary high currents associated with motor starting while providing effective protection against damaging short-circuit currents. As an aM fuse provides partial-range protection, it is normally coordinated with a suitable overload relay or other motor overload protection device.

Rated at 500 V AC, the OFAF000AM50 provides a compact protection solution for motor starters, control panels and industrial machinery. Its NH000 / DIN size 000 construction enables installation in compatible fuse bases and switch-fuse equipment, while its HRC design provides dependable current-limiting performance during electrical fault conditions.

Key Advantages

• Purpose-designed aM motor fuse link for short-circuit protection.
• 50 A rated current for industrial motor circuits.
• 500 V AC rated voltage for low-voltage motor-control applications.
• Compact NH000 / DIN size 000 construction.
• aM operating characteristic accommodates normal motor starting currents.
• HRC construction provides effective current-limiting fault protection.
• Suitable for coordination with contactors and motor overload protection devices.

Key Features

• ABB OFAF000AM50 HRC motor fuse link.
• 50 A rated current.
• 500 V AC rated voltage.
• aM utilisation category for motor circuit protection.
• NH000 / DIN size 000 fuse format.
• 2.3 W power loss at rated current.
• Designed for short-circuit protection of motor circuits.
• Suitable for use with appropriately coordinated overload protection.
• Compact format for industrial motor-control equipment.

Reliable Short-Circuit Protection for Industrial Motors

aM fuse links such as the ABB OFAF000AM50 are specifically designed for motor circuits where starting currents can be considerably higher than normal running current. The aM characteristic accommodates these temporary starting currents while providing effective interruption of severe short-circuit currents that could otherwise damage cables, contactors and associated motor-control equipment.

Because the OFAF000AM50 is an aM partial-range fuse, it is normally coordinated with an appropriately selected overload relay or other overload protection device. This combination allows the fuse to provide short-circuit protection while the associated protective device responds to sustained motor overload conditions.

Typical Applications

• Industrial motor circuit short-circuit protection.
• Motor control centres and electrical control panels.
• Direct-on-line motor starter assemblies.
• Pumps, fans and conveyor systems.
• Industrial machinery and automation equipment.
• Coordinated contactor and overload relay assemblies.
• Compatible NH000 / DIN size 000 fuse bases and switch-fuse equipment.