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1SDA055855R1 ABB E2B 2000 PR123/P-LSIG 2000 A 4-Pole Withdrawable Air Circuit Breaker Moving Part
ABB 1SDA055855R1 SACE Emax E2B 2000 is a 2000 A four-pole withdrawable air circuit breaker moving part with a PR123/P-LSIG electronic release, integrated earth-fault protection and 42 kA short-circuit breaking capacity at 400 V AC.
£21,263.06
Why Choose the ABB 1SDA055855R1 E2B 2000 Air Circuit Breaker Moving Part?
The ABB 1SDA055855R1 is a SACE Emax E2B 2000 moving part for a withdrawable air circuit breaker, engineered for high-current switching and comprehensive protection in low-voltage AC power distribution systems. This four-pole unit has a rated uninterrupted current of 2000 A and is equipped with an advanced PR123/P-LSIG R2000 electronic overcurrent release.
The PR123/P-LSIG release provides long-time, short-time, instantaneous and earth-fault protection, giving the breaker comprehensive protection against overload and fault conditions. The E2B performance level provides a rated ultimate short-circuit breaking capacity of 42 kA at 400 V AC, making this model suitable for demanding industrial, commercial and infrastructure distribution systems.
The 1SDA055855R1 is a four-pole withdrawable (W) moving portion intended for use with the corresponding compatible SACE Emax fixed part. Its withdrawable construction supports maintenance and replacement strategies in critical switchboards, while four auxiliary change-over contacts and circuit-breaker open/closed position indication provide useful signalling for monitoring and control systems.
Key Advantages
- High-current 2000 A E2B air circuit breaker moving part for demanding low-voltage distribution.
- PR123/P-LSIG R2000 electronic release provides comprehensive overload, short-circuit and earth-fault protection.
- 42 kA rated ultimate short-circuit breaking capacity at 400 V AC.
- Four-pole configuration supports three-phase power distribution systems with neutral switching.
- Withdrawable construction facilitates inspection, servicing and replacement within compatible SACE Emax switchgear.
- Integrated earth-fault protection provides an additional layer of protection for distribution systems.
- Four auxiliary change-over contacts support circuit-breaker status signalling and control integration.
- Open/closed position indication provides clear breaker status information.
Key Features
- ABB SACE Emax E2B 2000 air circuit breaker moving part.
- 2000 A rated uninterrupted current.
- 4-pole configuration.
- PR123/P-LSIG R2000 electronic overcurrent release.
- LSIG functions provide long-time, short-time, instantaneous and earth-fault protection.
- Withdrawable (W) circuit-breaker configuration.
- Moving portion for use with a compatible SACE Emax fixed part.
- 690 V AC rated voltage.
- 42 kA rated ultimate short-circuit breaking capacity at 400 V AC.
- Adjustable overload release setting from 800–2000 A.
- Adjustable instantaneous short-circuit release setting from 3000–30000 A.
- Integrated earth-fault protection.
- Four auxiliary change-over contacts.
- Open/closed circuit-breaker position indication.
Advanced PR123/P-LSIG Protection for 2000 A Distribution
The ABB SACE Emax E2B 2000 provides switching and electronic protection for high-current low-voltage distribution circuits. Its PR123/P-LSIG electronic release combines long-time protection against sustained overloads, short-time protection for fault coordination, instantaneous protection against severe short circuits and earth-fault protection for faults involving earth or protective conductors.
The withdrawable construction allows the circuit-breaker moving portion to be removed from its compatible fixed part, supporting inspection, maintenance and replacement strategies in critical switchboards. Combined with a 2000 A rating, four-pole configuration and 42 kA short-circuit breaking capacity at 400 V AC, the 1SDA055855R1 provides a capable solution for main incoming and high-current distribution duties requiring advanced electronic protection and serviceability.
Typical Applications
- Industrial low-voltage distribution switchboards.
- Main incoming circuit protection.
- Four-pole three-phase and neutral distribution systems.
- High-current feeder protection.
- Withdrawable switchgear assemblies.
- Manufacturing and process plants.
- Commercial and infrastructure electrical distribution.
- Power distribution systems requiring overload, selective short-circuit and earth-fault protection.
Technical Specifications
| Series | SACE Emax |
|---|---|
| ABB order code | 1SDA055855R1 |
| Product type | Air circuit breaker moving part |
| Frame / sub-type | E2 |
| Performance level | B |
| Rated current (In) | 2000 A |
| Rated uninterrupted current (Iu) | 2000 A |
| Number of poles | 4 |
| Current type | AC |
| Rated voltage | 690 V AC |
| Rated ultimate short-circuit breaking capacity (Icu) at 400 V AC, 50 Hz | 42 kA |
| Release | PR123/P-LSIG R2000 |
| Release type | Electronic |
| Protection functions | LSIG – long-time, short-time, instantaneous and earth-fault |
| Long-time protection (L) | Overload protection |
| Overload release adjustment range | 800–2000 A |
| Short-time protection (S) | Delayed short-circuit protection |
| Instantaneous protection (I) | Instantaneous short-circuit protection |
| Instantaneous short-circuit adjustment range | 3000–30000 A |
| Earth-fault protection (G) | Integrated |
| Version | Withdrawable |
| Configuration | Moving portion |
| Complete device with protection unit | Yes |
| Auxiliary contacts | 4 change-over contacts |
| Position indication | Circuit breaker open / closed |
| Switched-off indication | Available |
| Integrated motor drive | No |
| Optional motor drive | Yes |
| DIN rail mounting | No |
| Net weight | 73 kg |
| EAN | 8015644571955 |
Frequently Asked Questions
What is the ABB 1SDA055855R1?
The ABB 1SDA055855R1 is the moving portion of a four-pole SACE Emax E2B 2000 withdrawable air circuit breaker, rated at 2000 A and fitted with a PR123/P-LSIG R2000 electronic overcurrent release.
What protection release is fitted to the ABB 1SDA055855R1?
The breaker is fitted with the advanced PR123/P-LSIG R2000 electronic release, providing long-time, short-time, instantaneous and earth-fault protection.
What does LSIG protection mean?
LSIG denotes long-time, short-time, instantaneous and earth-fault protection. Together, these functions protect against sustained overloads, delayed and severe short-circuit faults, and earth-fault conditions.
Is the ABB 1SDA055855R1 fixed or withdrawable?
The 1SDA055855R1 is a withdrawable circuit-breaker moving part designed for use with the corresponding compatible ABB SACE Emax fixed part.
What is the short-circuit breaking capacity of the ABB E2B 2000?
The E2B 2000 has a rated ultimate short-circuit breaking capacity of 42 kA at 400 V AC, 50 Hz, supporting demanding high-current low-voltage distribution applications.
Trusted ABB Protection for Critical Distribution Systems
ABB SACE Emax air circuit breakers provide robust switching and advanced electronic protection for low-voltage power distribution, combining high current capability, comprehensive LSIG protection and serviceable withdrawable construction for demanding industrial and infrastructure applications.
