1SDA056065R1 ABB E2L1250 PR121/P-LSI 1250A 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E2L1250 PR121/P-LSI 1250A Air Circuit Breaker?

The ABB E2L1250 PR121/P-LSI, order code 1SDA056065R1, is a high-performance three-pole withdrawable air circuit breaker moving part designed for switching and protection in demanding low-voltage electrical distribution systems. Part of the established ABB SACE Emax series, this E2L configuration combines a rated current of 1250 A with the PR121/P electronic overcurrent release for dependable protection in industrial, commercial and infrastructure power networks.

This configuration is supplied as the withdrawable moving part (W MP) for use with the corresponding SACE Emax fixed part. The fitted PR121/P-LSI R1250 electronic overcurrent release provides long-time, short-time and instantaneous protection functions, helping protect electrical systems against sustained overloads and short-circuit faults while supporting selective protection coordination.

The E2L performance class is engineered for demanding low-voltage applications where strong short-circuit performance and serviceability are important. Four auxiliary contacts and open/closed circuit-breaker position indication support remote signalling and monitoring, while the withdrawable architecture simplifies inspection, servicing and replacement within compatible switchgear assemblies.

Key Advantages

• High-performance ABB SACE Emax E2L air circuit breaker moving part for demanding low-voltage power distribution.
• 1250 A rated current for substantial industrial and commercial electrical loads.
• Three-pole withdrawable configuration for three-phase electrical distribution systems.
• PR121/P-LSI electronic overcurrent release for dependable circuit protection.
• Long-time, short-time and instantaneous protection against overload and short-circuit conditions.
• Short-time protection supports selective coordination between upstream and downstream protective devices.
• Four auxiliary contacts provide circuit-breaker open/closed status signalling.
• Withdrawable moving-part architecture supports efficient maintenance, inspection and replacement.

Key Features

• ABB SACE Emax E2L series.
• 1250 A rated current.
• Three-pole construction.
• Withdrawable moving part (W MP).
• PR121/P electronic overcurrent release.
• R1250 overcurrent release rating.
• LSI protection: long-time, short-time and instantaneous.
• 500–1250 A overload release adjustment range.
• 1250–12500 A short-time delayed short-circuit adjustment range.
• 1875–18750 A instantaneous short-circuit adjustment range.
• Four auxiliary contacts for status signalling.
• Open/closed circuit-breaker position indication.

Advanced Protection for Low-Voltage Power Distribution

Air circuit breakers such as the ABB SACE Emax E2L1250 provide switching, isolation and protection for high-current low-voltage distribution circuits. The E2L performance class is intended for demanding power networks, while the withdrawable construction enables the circuit-breaker moving part to be removed from its compatible fixed part for maintenance, inspection or replacement without permanently mounting the breaker mechanism within the switchboard.

The PR121/P electronic overcurrent release provides LSI protection for demanding electrical networks. Long-time protection responds to sustained overload conditions, short-time protection provides delayed short-circuit protection that can assist with selective coordination, and instantaneous protection rapidly interrupts severe short-circuit currents to help safeguard conductors, switchgear, transformers and connected equipment.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Main incomer and high-current feeder protection.
• Manufacturing and process plants.
• Commercial buildings and infrastructure installations.
• Motor control centres and power distribution assemblies.
• Transformer secondary and generator distribution circuits.
• Switchgear requiring withdrawable architecture and selective overcurrent protection.