1SCA022660R9000 ABB 63 A aM NH000 690 V HRC Motor Fuse

Why Choose the ABB OFAA000AM63 63 A aM Fuse?

The ABB OFAA000AM63 is a 63 A aM HRC DIN fuse link designed for short-circuit protection of motor circuits. Identified by ABB product ID 1SCA022660R9000, this compact NH000 / size 000 fuse is rated for operation at up to 690 V AC.

Its aM utilisation category provides partial-range protection specifically suited to motor circuits. The fuse is designed to interrupt high fault and short-circuit currents while a separate overload protection device handles sustained motor overload conditions, making it suitable for coordinated motor starter assemblies.

The OFAA000AM63 has a power loss of approximately 2.9 W at rated current and uses ABB's industrial DIN-type HRC fuse-link construction. Its compact NH000 format provides high-current motor protection while conserving space within motor control centres, machinery panels and industrial distribution equipment.

Key Advantages

• 63 A aM motor fuse designed for short-circuit protection.
• Rated for systems up to 690 V AC.
• Compact NH000 / DIN size 000 construction.
• HRC construction provides dependable interruption of high fault currents.
• Current-limiting operation helps reduce fault stresses on downstream equipment.
• Designed to coordinate with separate motor overload protection.
• Suitable for industrial motor starters and motor control centres.
• Manufactured to the IEC 60269 fuse standard.

Key Features

• ABB OFAA000AM63 HRC fuse link.
• 63 A rated current.
• 690 V AC rated voltage.
• aM utilisation category for motor protection.
• NH000 / DIN size 000.
• Partial-range short-circuit protection.
• 2.9 W power loss at rated current.
• DIN-type blade fuse-link construction.
• Designed for use with separate motor overload protection.
• Suitable for demanding industrial electrical installations.

Reliable Short-Circuit Protection for Motor Circuits

An aM fuse is specifically intended for motor circuits and provides partial-range protection against short-circuit currents. Unlike a full-range fuse, it is normally combined with a suitable overload relay, manual motor starter or other overload protection device to provide coordinated protection across the motor circuit's operating and fault-current ranges.

The ABB OFAA000AM63 provides a 63 A rating in the compact NH000 format, making it particularly useful where relatively high motor-circuit current capacity is required within limited panel space. Its HRC current-limiting construction helps reduce thermal and electrodynamic stresses on contactors, conductors and other downstream equipment during severe short-circuit conditions.

Typical Applications

• Industrial motor starter circuits.
• Motor control centres.
• Pumps, fans and compressors.
• Conveyors and material handling equipment.
• Machine control and automation panels.
• Industrial power distribution systems.