1SDA056048R1 ABB E2L1250 PR121/P-LI 1250 A 3P Fixed Air Circuit Breaker

Why Choose the ABB E2L1250 PR121/P-LI Air Circuit Breaker?

The ABB E2L1250 PR121/P-LI, order code 1SDA056048R1, is a high-performance three-pole fixed air circuit breaker (ACB) designed for demanding low-voltage power distribution and protection applications. Part of the ABB SACE Emax E2 series, it combines a rated current of 1250 A with the PR121/P-LI R1250 electronic overcurrent release and the high short-circuit performance of the E2L version.

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. The electronic release offers adjustable protection settings, enabling the breaker to be configured for the requirements of industrial, commercial and infrastructure distribution systems.

This E2L1250 version features fixed construction with rear horizontal terminals, four auxiliary change-over contacts and open/closed circuit-breaker position indication. With a rated operational voltage of 690 V AC and an ultimate short-circuit breaking capacity of 130 kA at 400/415 V AC, it is engineered for installations with particularly high prospective fault levels.

Key Advantages

• High-performance ABB SACE Emax E2L air circuit breaker.
• 1250 A rated uninterrupted current for high-current distribution systems.
• Three-pole configuration for three-phase low-voltage networks.
• PR121/P-LI R1250 electronic overcurrent release.
• Long-time and instantaneous protection against overload and severe short-circuit conditions.
• High 130 kA Icu at 400/415 V AC for demanding fault levels.
• Fixed construction with rear horizontal terminals for switchboard integration.
• Four change-over auxiliary contacts support signalling, monitoring and control functions.

Key Features

• ABB SACE Emax E2L series.
• 1250 A rated current.
• Three-pole fixed air circuit breaker.
• PR121/P-LI R1250 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.
• 130 kA Icu and Ics at 400/415 V AC.
• Rear horizontal main terminals.
• Four change-over auxiliary contacts.
• Open/closed circuit-breaker position indication.
• Optional motor operating mechanism capability.

High-Breaking-Capacity Protection for Critical Distribution

The ABB SACE Emax E2L1250 is designed for low-voltage installations where high prospective short-circuit currents demand substantial interruption capability. Its E2L performance level delivers an ultimate breaking capacity of 130 kA at 400/415 V AC, making it particularly suitable for high-capacity main distribution boards, transformer-fed systems and demanding industrial switchgear.

The PR121/P-LI electronic release provides long-time protection against sustained overloads together with instantaneous protection against severe short circuits. Combined with fixed rear-horizontal-terminal construction, four auxiliary change-over contacts and open/closed position indication, the E2L1250 provides robust protection and straightforward integration into suitably designed ABB Emax switchgear.

Typical Applications

• Main low-voltage electrical distribution switchboards.
• Industrial power distribution systems.
• Manufacturing and process plant switchgear.
• Commercial and infrastructure electrical distribution.
• Transformer secondary protection.
• Generator and standby power installations.
• High-current incoming and feeder protection.
• Installations with high prospective short-circuit fault levels.