2CCS864017R0705 ABB S804U-Z70 70 A 4-Pole Z High-Performance MCB 50 kA UL 489

Why Choose the ABB S804U-Z70 High-Performance MCB?

The ABB S804U-Z70 is a high-performance 4-pole miniature circuit breaker (MCB) designed to provide dependable overload and short-circuit protection in demanding electrical installations. As part of the ABB S800 high-performance circuit breaker range, it combines a 70 A rated current, Z tripping characteristic and high 50 kA short-circuit breaking capacity for robust circuit protection.

The S804U-Z70 features a four-pole configuration and a sensitive Z tripping characteristic, making it particularly suitable for circuits where rapid magnetic operation is required to protect sensitive loads and equipment with comparatively low fault-current levels. Its UL 489 classification supports use as a branch-circuit protective device in applications designed around the relevant North American circuit-breaker requirements.

With a rated current of 70 A, four-pole configuration and 50 kA breaking capacity, the S804U-Z70 is engineered for professional power distribution, machinery and control applications. Its combination of high fault-current performance and Z characteristic makes it particularly useful where sensitive circuit protection is required without sacrificing the robust performance associated with the ABB S800 platform.

Key Advantages

• High-performance 4-pole miniature circuit breaker for demanding electrical installations.
• 70 A rated current for reliable circuit and equipment protection.
• High 50 kA short-circuit breaking capacity.
• Z tripping characteristic for sensitive circuit protection.
• UL 489 circuit breaker for applications requiring UL branch-circuit protection.
• Four-pole configuration for comprehensive multi-pole circuit protection.

Key Features

• ABB S800 high-performance MCB range.
• S804U four-pole circuit breaker configuration.
• 70 A rated current.
• Z tripping characteristic.
• 50 kA short-circuit breaking capacity.
• UL 489 classification.
• High-performance protection against overload and short-circuit currents.
• Suitable for sensitive electrical circuits requiring rapid magnetic fault response.
• Four-pole construction for professional electrical distribution systems.
• Designed for demanding industrial, machinery and control applications.

Sensitive High-Performance Circuit Protection

High-performance miniature circuit breakers such as the ABB S804U-Z70 automatically interrupt an electrical circuit when excessive current occurs because of an overload or short circuit. This helps protect conductors, connected equipment and downstream electrical components from damaging fault currents while supporting dependable operation of the installation.

The Z tripping characteristic provides sensitive magnetic response and is suited to circuits where relatively low short-circuit currents require rapid disconnection. Combined with the S804U-Z70's four-pole construction, 70 A rating, 50 kA breaking capacity and UL 489 classification, this makes the breaker suitable for demanding applications where both high fault-current capability and sensitive protection are important.

Typical Applications

• Industrial electrical distribution systems.
• Machinery and automation control panels.
• Sensitive electrical and electronic equipment circuits.
• UL 489 branch-circuit protection applications.
• Manufacturing and process control equipment.
• Electrical systems with high prospective short-circuit currents.