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1SDA055793R1 ABB E2B 1600 PR121/P-LSI 1600A 3P Fixed Air Circuit Breaker
ABB 1SDA055793R1 E2B 1600 three-pole fixed air circuit breaker rated at 1600 A with a PR121/P-LSI R1600 electronic release, horizontal rear flat terminals and 42 kA short-circuit breaking capacity.
£8,250.90
Why Choose the ABB E2B 1600 PR121/P-LSI 1600A 3P Fixed Air Circuit Breaker?
The ABB E2B 1600 PR121/P-LSI, order code 1SDA055793R1, is a high-performance three-pole fixed air circuit breaker (ACB) designed for protection and switching in demanding low-voltage electrical distribution systems. Part of the ABB SACE Emax E2B series, it combines a 1600 A rated current with the PR121/P-LSI R1600 electronic overcurrent release for dependable overload, short-time and instantaneous short-circuit protection.
This E2B breaker is supplied in a fixed configuration with horizontal rear flat terminals, making it suitable for integration into industrial switchboards, main distribution boards and power-control assemblies. Its three-pole construction is designed for three-phase circuits, while four auxiliary contacts provide circuit-breaker open/closed position indication for signalling, monitoring and control applications.
The E2B 1600 provides rated ultimate and service short-circuit breaking capacities of 42 kA throughout its specified 220–690 V AC range, together with a rated short-time withstand current of 42 kA for 1 s and 3 s. The PR121/P-LSI release provides long-time, short-time and instantaneous protection functions, supporting selective protection coordination in industrial, commercial and infrastructure power networks.
Key Advantages
- Heavy-duty ABB SACE Emax air circuit breaker for low-voltage power distribution.
- 1600 A rated current for high-current industrial and commercial installations.
- Three-pole configuration for three-phase electrical distribution systems.
- PR121/P-LSI R1600 electronic protection release provides long-time, short-time and instantaneous protection.
- 42 kA ultimate and service short-circuit breaking capacity throughout the specified AC voltage range.
- Fixed construction with horizontal rear flat 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-LSI R1600 electronic overcurrent release.
- Long-time (L), short-time (S) and instantaneous (I) protection functions.
- 690 V AC rated operational voltage.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
- 42 kA rated ultimate and service short-circuit breaking capacity.
- 42 kA short-time withstand current for 1 s and 3 s.
Selective 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 protection thresholds are exceeded, helping protect cables, switchgear and connected equipment against damaging overload and short-circuit currents.
The PR121/P-LSI release combines long-time overload protection with short-time and instantaneous short-circuit protection. The adjustable short-time function supports coordination between upstream and downstream protective devices, helping isolate faults selectively while maintaining supply to unaffected sections of the electrical distribution system.
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 selective high-current circuit protection.
Technical Specifications
| Series | SACE Emax E2B |
|---|---|
| ABB order code | 1SDA055793R1 |
| Product group | 310513-New Emax |
| EAN | 8015644571337 |
| 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 |
| Rated operational current (Ie) | 1600 A |
| Number of poles | 3 |
| Current type | AC |
| Rated operational voltage | 690 V AC |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Rated ultimate short-circuit breaking capacity (Icu) | 42 kA at 220–690 V AC |
| Rated service short-circuit breaking capacity (Ics) | 42 kA at 220–690 V AC |
| Rated short-time withstand current (Icw) | 42 kA for 1 s; 42 kA for 3 s |
| Protection release | PR121/P-LSI R1600 |
| Release type | Electronic overcurrent release |
| Protection functions | Long-time (L), short-time (S) and instantaneous (I) |
| Overload release setting range | 640–1600 A |
| Short-time short-circuit release setting range | 1600–16000 A |
| Instantaneous short-circuit release setting range | 2400–24000 A |
| Integrated earth-fault protection | No |
| Mounting version | Fixed |
| Terminal connection | Horizontal rear flat terminals |
| Auxiliary contacts | 2 normally open + 2 normally closed |
| Auxiliary indication | Circuit breaker open / closed position |
| Operating mechanism | Push-button |
| Motor drive | Optional |
| Degree of protection | IP2X |
| Power loss | 115 W |
| Product net width | 296 mm |
| Product net height | 418 mm |
| Product net depth | 302 mm |
| Product net weight | 45 kg |
| Mechanical durability | 25,000 operating cycles |
| Electrical durability | 12,000 cycles at ≤440 V; 10,000 cycles at 500–690 V |
| Standard | IEC |
Frequently Asked Questions
What is the ABB 1SDA055793R1?
The ABB 1SDA055793R1 is an E2B 1600 three-pole fixed SACE Emax air circuit breaker rated at 1600 A, supplied with horizontal rear flat terminals and a PR121/P-LSI R1600 electronic overcurrent release.
What protection functions does the PR121/P-LSI provide?
The PR121/P-LSI electronic release provides long-time overload (L), short-time short-circuit (S) and instantaneous short-circuit (I) protection, allowing more flexible protection coordination than an LI-only release.
What is the breaking capacity of the ABB E2B 1600?
The E2B 1600 provides rated ultimate and service short-circuit breaking capacities of 42 kA throughout its specified 220–690 V AC range, together with a rated short-time withstand current of 42 kA for 1 s and 3 s.
Is the ABB 1SDA055793R1 fixed or withdrawable?
The 1SDA055793R1 is a fixed three-pole air circuit breaker supplied with horizontal rear flat terminals for permanent integration into a low-voltage switchboard.
Does the ABB 1SDA055793R1 provide integrated earth-fault protection?
No. The PR121/P-LSI configuration provides long-time, short-time and instantaneous overcurrent protection. Applications requiring integrated earth-fault protection use an appropriate LSIG release configuration.
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.
