1SDA057153R1 ABB E6V 6300 PR121/P-LSI 6300A 3P Withdrawable Air Circuit Breaker

Why Choose the ABB E6V 6300 PR121/P-LSI 6300A 3P Withdrawable Air Circuit Breaker?

The ABB 1SDA057153R1 is a high-performance SACE Emax E6V air circuit breaker moving part designed for protection and switching in demanding high-current low-voltage electrical distribution systems. Rated at 6300 A, this three-pole withdrawable breaker incorporates an ABB PR121/P-LSI R6300 electronic overcurrent release providing long-time overload, short-time delayed and instantaneous short-circuit protection.

As part of the proven ABB SACE Emax series, the E6V 6300 combines very high current-carrying capability with a withdrawable design suited to critical switchboard applications. The moving part is designed for use with the corresponding Emax fixed part, allowing the breaker to be isolated and removed for inspection, servicing or replacement.

The PR121/P-LSI electronic trip unit provides three-stage overcurrent protection for coordinated high-current distribution systems. Four auxiliary contacts and circuit-breaker open/closed position indication support integration with switchboard signalling, monitoring and control systems.

Key Advantages

• High-current 6300 A SACE Emax air circuit breaker moving part.
• Three-pole configuration for high-capacity three-phase electrical networks.
• PR121/P-LSI R6300 electronic overcurrent release.
• LSI functionality provides long-time, short-time and instantaneous protection.
• E6V frame designed for demanding high-current power distribution applications.
• Withdrawable construction supports efficient inspection, maintenance and replacement.
• Four auxiliary contacts support signalling and control integration.
• Open/closed circuit-breaker position indication supports operational monitoring.

Key Features

• ABB SACE Emax E6V air circuit breaker platform.
• 6300 A rated current.
• Three-pole configuration.
• Withdrawable moving-part execution.
• PR121/P-LSI R6300 electronic overcurrent release.
• Long-time overload protection.
• Short-time delayed short-circuit protection.
• Instantaneous short-circuit protection.
• Four auxiliary contacts.
• Open/closed circuit-breaker position indication.
• Designed for use with the corresponding SACE Emax withdrawable fixed part.
• Suitable for critical high-current low-voltage distribution systems.

High-Current Protection for Critical Power Distribution

Air circuit breakers such as the ABB SACE Emax E6V provide switching and overcurrent protection for major low-voltage distribution circuits. The electronic trip unit monitors current conditions and initiates circuit-breaker operation when configured overload or short-circuit thresholds are exceeded, helping protect busbars, cables, transformers and connected electrical equipment.

The PR121/P-LSI release combines long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection with the 6300 A capability of the E6V frame. Its withdrawable construction additionally allows the breaker moving part to be isolated and removed from the associated fixed part, supporting maintainability in critical power distribution installations.

Typical Applications

• Main incoming circuit breakers in high-current low-voltage switchboards.
• Industrial power distribution systems.
• High-capacity feeder protection.
• Transformer secondary protection and switching.
• Manufacturing and process plants.
• Commercial and infrastructure power distribution.
• Generator and utility distribution systems.
• Switchboards requiring withdrawable 6300 A breakers with LSI protection.