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1SDA055826R1 ABB E2B 2000 PR121/P-LSIG 2000A 3P Fixed Air Circuit Breaker
ABB 1SDA055826R1 E2B 2000 three-pole fixed air circuit breaker rated at 2000 A with a PR121/P-LSIG R2000 electronic release, integrated earth-fault protection, horizontal rear flat terminals and 42 kA short-circuit breaking capacity.
£11,741.29
Why Choose the ABB E2B 2000 PR121/P-LSIG 2000A 3P Fixed Air Circuit Breaker?
The ABB E2B 2000 PR121/P-LSIG, order code 1SDA055826R1, 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 2000 A rated current with the PR121/P-LSIG R2000 electronic overcurrent release for comprehensive overload, short-circuit and earth-fault 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 and circuit-breaker open/closed position indication support signalling, monitoring and control applications.
The E2B 2000 provides rated ultimate and service short-circuit breaking capacities of 42 kA throughout its 220–690 V AC range, together with a rated short-time withstand current of 42 kA. The PR121/P-LSIG release provides long-time, short-time, instantaneous and earth-fault protection functions, supporting selective protection and dependable fault interruption in high-current power networks.
Key Advantages
- Heavy-duty ABB SACE Emax air circuit breaker for low-voltage power distribution.
- 2000 A rated current for high-current industrial and commercial installations.
- Three-pole configuration for three-phase electrical distribution systems.
- PR121/P-LSIG R2000 electronic protection release provides overload, short-circuit and earth-fault 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 and open/closed position indication support remote signalling and control.
Key Features
- ABB SACE Emax E2B series.
- 2000 A rated uninterrupted current.
- 3-pole fixed air circuit breaker.
- PR121/P-LSIG R2000 electronic overcurrent release.
- Long-time (L), short-time (S), instantaneous (I) and earth-fault (G) 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.
Comprehensive Protection for High-Current Distribution Systems
Air circuit breakers such as the ABB E2B 2000 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 overloads, short circuits and earth faults.
The PR121/P-LSIG release combines long-time overload protection with short-time selective, instantaneous short-circuit and earth-fault protection. This combination supports coordination between upstream and downstream protective devices, while the E2B platform provides the fault-interruption capability required for demanding industrial, commercial and infrastructure power distribution systems.
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 overcurrent and earth-fault protection.
Technical Specifications
| Series | SACE Emax E2B |
|---|---|
| ABB order code | 1SDA055826R1 |
| Product group | 310513-New Emax |
| EAN | 8015644571665 |
| Product type | Air circuit breaker (ACB) |
| Frame size | E2 |
| Short-circuit performance level | B |
| Rated current (In) | 2000 A |
| Rated operational current (Ie) | 2000 A |
| Rated uninterrupted current (Iu) | 2000 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-LSIG R2000 |
| Release type | Electronic overcurrent release |
| Protection functions | Long-time (L), short-time (S), instantaneous (I) and earth-fault (G) |
| Earth-fault protection | Integrated |
| Mounting version | Fixed |
| Terminal connection | Horizontal rear flat terminals |
| Auxiliary contacts | 4 |
| Auxiliary indication | Circuit breaker open / closed position |
| Product net weight | 55 kg |
| Mechanical durability | 25,000 operating cycles |
| Electrical durability | 10,000 cycles at ≤440 V; 8,000 cycles at 500–690 V |
| Standard | IEC |
Frequently Asked Questions
What is the ABB 1SDA055826R1?
The ABB 1SDA055826R1 is an E2B 2000 three-pole fixed SACE Emax air circuit breaker rated at 2000 A, supplied with horizontal rear flat terminals and a PR121/P-LSIG R2000 electronic overcurrent release.
What protection functions does the PR121/P-LSIG provide?
The PR121/P-LSIG electronic release provides long-time overload (L), short-time short-circuit (S), instantaneous short-circuit (I) and earth-fault (G) protection.
What is the breaking capacity of the ABB E2B 2000?
The E2B 2000 provides rated ultimate and service short-circuit breaking capacities of 42 kA throughout its 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 1SDA055826R1 fixed or withdrawable?
The 1SDA055826R1 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 1SDA055826R1 provide earth-fault protection?
Yes. Its PR121/P-LSIG R2000 electronic release includes an integrated earth-fault (G) protection function in addition to long-time, short-time and instantaneous overcurrent protection.
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 comprehensive electronic protection, robust construction and proven fault-interruption performance for industrial power control.
