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1SDA055792R1 ABB E2B 1600 PR121/P-LI 1600A 3P Fixed Air Circuit Breaker
ABB 1SDA055792R1 E2B 1600 three-pole fixed air circuit breaker rated at 1600 A with a PR121/P-LI R1600 electronic release, horizontal rear terminals, four auxiliary contacts and 42 kA short-circuit breaking capacity.
£7,703.36
Why Choose the ABB E2B 1600 PR121/P-LI 1600A 3P Fixed Air Circuit Breaker?
The ABB E2B 1600 PR121/P-LI, order code 1SDA055792R1, is a high-performance three-pole fixed air circuit breaker (ACB) designed for protection and switching in low-voltage electrical distribution systems. Part of the ABB SACE Emax E2B series, it combines a 1600 A rated current with the PR121/P-LI R1600 electronic overcurrent release for dependable overload and instantaneous short-circuit protection.
This E2B breaker is supplied in a fixed configuration with horizontal rear terminals, making it suitable for integration into industrial switchboards, main distribution boards and power-control assemblies. The three-pole construction is designed for three-phase circuits, while four auxiliary contacts provide open/closed circuit-breaker position indication for signalling, monitoring and control applications.
The E2B performance level provides a rated ultimate and service short-circuit breaking capacity of 42 kA across its specified AC voltage range up to 690 V AC. Its PR121/P-LI electronic release provides long-time overload and instantaneous short-circuit protection, delivering reliable circuit protection for industrial, commercial and infrastructure power networks.
Key Advantages
- Heavy-duty ABB SACE Emax air circuit breaker for low-voltage power distribution.
- 1600 A rated uninterrupted current for high-current electrical installations.
- Three-pole configuration for three-phase distribution systems.
- PR121/P-LI R1600 electronic protection release provides long-time overload and instantaneous short-circuit protection.
- 42 kA ultimate and service short-circuit breaking capacity across the specified AC voltage range.
- Fixed construction with horizontal rear terminals for robust switchboard integration.
- Four auxiliary contacts provide circuit-breaker open/closed position indication.
Key Features
- ABB SACE Emax E2B series.
- 1600 A rated uninterrupted current.
- 3-pole fixed air circuit breaker.
- PR121/P-LI R1600 electronic overcurrent release.
- Long-time (L) and instantaneous (I) protection functions.
- 690 V AC rated operational voltage.
- 42 kA rated ultimate short-circuit breaking capacity.
- 42 kA rated service short-circuit breaking capacity.
- 42 kA short-time withstand current for 1 s and 3 s.
- Fixed mounting with horizontal rear terminals.
Reliable Protection for High-Current Distribution Systems
Air circuit breakers such as the ABB E2B 1600 provide switching and automatic protection for high-current low-voltage circuits. The electronic protection release monitors current conditions and commands the breaker to interrupt the circuit when configured thresholds are exceeded, helping protect cables, switchgear and connected equipment against damaging overload and short-circuit currents.
The PR121/P-LI release combines long-time overload protection with instantaneous short-circuit protection. Together with the E2B's 42 kA interruption capability and fixed horizontal-rear-terminal construction, this provides a robust solution for switchboards requiring dependable high-current protection and straightforward integration into permanent power-distribution assemblies.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial power distribution systems.
- Main incomer and high-current feeder protection.
- Manufacturing and process plants.
- Commercial and infrastructure electrical installations.
- Generator and transformer distribution systems.
- Fixed switchgear requiring dependable high-current circuit protection.
Technical Specifications
| Series | SACE Emax E2B |
|---|---|
| ABB order code | 1SDA055792R1 |
| Product group | 310513-New Emax |
| EAN | 8015644571320 |
| Product type | Air circuit breaker (ACB) |
| Frame size | E2 |
| Short-circuit performance level | B |
| Rated current (In) | 1600 A |
| Rated uninterrupted current (Iu) | 1600 A |
| Number of poles | 3 |
| Current type | AC |
| Rated operational voltage | 690 V AC |
| Rated ultimate short-circuit breaking capacity (Icu) | 42 kA at 220–690 V AC |
| Rated service short-circuit breaking capacity (Ics) | 42 kA at 230–690 V AC |
| Rated short-time withstand current (Icw) | 42 kA for 1 s; 42 kA for 3 s |
| Protection release | PR121/P-LI R1600 |
| Release type | Electronic overcurrent release |
| Protection functions | Long-time (L) and instantaneous (I) |
| Earth-fault protection | Not integrated in the LI configuration |
| Mounting version | Fixed |
| Terminal connection | Horizontal rear terminals |
| Auxiliary contacts | 4 |
| Auxiliary indication | Circuit breaker open / closed position |
| Product net weight | 55 kg |
| Standard | IEC |
Frequently Asked Questions
What is the ABB 1SDA055792R1?
The ABB 1SDA055792R1 is an E2B 1600 three-pole fixed SACE Emax air circuit breaker rated at 1600 A, supplied with horizontal rear terminals and a PR121/P-LI R1600 electronic overcurrent release.
What protection functions does the PR121/P-LI provide?
The PR121/P-LI electronic release provides long-time overload (L) and instantaneous short-circuit (I) protection.
What is the breaking capacity of the ABB E2B 1600?
The E2B 1600 provides a rated ultimate short-circuit breaking capacity of 42 kA across its specified 220–690 V AC range, with a rated short-time withstand current of 42 kA for both 1 s and 3 s.
Is the ABB 1SDA055792R1 fixed or withdrawable?
The 1SDA055792R1 is a fixed three-pole air circuit breaker supplied with horizontal rear terminals for integration into low-voltage switchboards.
Does the ABB 1SDA055792R1 include auxiliary contacts?
Yes. The circuit breaker is fitted with four auxiliary contacts providing open and closed position indication for integration with switchboard signalling, monitoring and control systems.
Trusted Low-Voltage Protection from ABB
ABB SACE Emax air circuit breakers are engineered for dependable switching and protection in demanding low-voltage distribution systems, combining electronic protection, robust construction and proven fault-interruption performance for industrial power control.
