1SDA055800R1 ABB E2B1600 PR121/P-LI 1600 A 4P Fixed Air Circuit Breaker

Why Choose the ABB E2B1600 PR121/P-LI Air Circuit Breaker?

The ABB E2B1600 PR121/P-LI, order code 1SDA055800R1, is a four-pole fixed air circuit breaker (ACB) designed for switching and protection in low-voltage power distribution systems. Part of the ABB SACE Emax E2 series, it combines a rated current of 1600 A with the PR121/P-LI R1600 electronic overcurrent release.

The PR121/P-LI release provides long-time overload and instantaneous short-circuit protection, helping protect conductors, switchgear and connected equipment against sustained overcurrents and severe fault conditions. Its electronic protection architecture makes the breaker suitable for dependable protection of industrial, commercial and infrastructure distribution networks.

This E2B1600 configuration uses fixed construction with rear horizontal terminals and includes four auxiliary contacts with open/closed position indication. With a rated operational voltage of 690 V AC and rated ultimate and service short-circuit breaking capacities of 42 kA across its specified AC voltage range, it provides robust protection and straightforward switchboard integration.

Key Advantages

• Proven ABB SACE Emax E2B air circuit breaker platform.
• 1600 A rated uninterrupted current for high-current distribution applications.
• Four-pole configuration for comprehensive switching and isolation.
• PR121/P-LI R1600 electronic overcurrent release.
• Long-time and instantaneous protection against overload and severe short-circuit conditions.
• 42 kA Icu and Ics throughout the specified 220–690 V AC range.
• Fixed construction with rear horizontal terminals for switchboard integration.
• Four auxiliary contacts and open/closed position indication support monitoring and control functions.

Key Features

• ABB SACE Emax E2B series.
• 1600 A rated current.
• Four-pole fixed air circuit breaker.
• PR121/P-LI R1600 electronic release.
• LI protection functions: Long-time and Instantaneous.
• 690 V AC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 42 kA Icu and Ics at 400/415 V AC.
• 42 kA Icu and Ics at 690 V AC.
• Rear flat horizontal main terminals.
• Four auxiliary contacts.
• Open/closed circuit-breaker position indication.

Reliable LI Protection for Power Distribution

The ABB SACE Emax E2B1600 provides switching, isolation and overcurrent protection for high-current low-voltage distribution systems. Its 1600 A current rating, four-pole construction and fixed rear-horizontal-terminal arrangement make it well suited to main switchboards, incoming supplies and feeder circuits where robust circuit protection and practical switchgear integration are required.

The PR121/P-LI electronic release provides long-time protection against sustained overloads together with instantaneous protection against severe short circuits. Combined with a 42 kA short-circuit rating, auxiliary status contacts and open/closed indication, this E2B1600 provides dependable protection and monitoring capability for critical electrical distribution systems.

Typical Applications

• Main low-voltage electrical distribution switchboards.
• Industrial power distribution systems.
• Manufacturing and process plant switchgear.
• Commercial and infrastructure electrical distribution.
• Transformer secondary distribution systems.
• Generator and standby power installations.
• High-current incoming and feeder protection.
• Fixed switchgear requiring LI overcurrent protection.