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1SDA055621R1 ABB E1B 800 PR122/P-LSIG 800 A 3-Pole Withdrawable Air Circuit Breaker Moving Part
ABB 1SDA055621R1 E1B 800 PR122/P-LSIG is an 800 A three-pole SACE Emax withdrawable air circuit breaker moving part with a PR122/P-LSIG R800 electronic trip unit providing long-time, short-time, instantaneous and earth-fault protection.
£8,934.92
Why Choose the ABB E1B 800 PR122/P-LSIG Air Circuit Breaker Moving Part?
The ABB E1B 800 PR122/P-LSIG, order code 1SDA055621R1, is a SACE Emax withdrawable air circuit breaker moving part designed for protection and switching in low-voltage power distribution systems. This three-pole configuration combines an 800 A rated current with the advanced PR122/P-LSIG electronic overcurrent release for long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection.
Part of the proven ABB SACE Emax E1 series, the E1B 800 moving part is intended for use with a compatible withdrawable circuit-breaker fixed part. Its withdrawable construction supports convenient inspection, maintenance and replacement in industrial switchboards and critical power distribution assemblies.
The PR122/P-LSIG R800 trip unit provides comprehensive electronic protection for demanding distribution applications. The assembly is fitted with four auxiliary change-over contacts and open/closed circuit-breaker position indication, supporting integration with switchboard signalling, monitoring and control systems.
Key Advantages
- High-capacity 800 A SACE Emax circuit-breaker moving part for low-voltage distribution.
- PR122/P-LSIG electronic trip unit provides long-time, short-time, instantaneous and earth-fault protection.
- Three-pole withdrawable configuration supports convenient maintenance and replacement.
- 42 kA short-circuit breaking capacity at 400 V AC.
- Four auxiliary change-over contacts support remote circuit-breaker status signalling.
- Open/closed position indication assists switchboard operation and monitoring.
Key Features
- ABB SACE Emax E1B series.
- 800 A rated uninterrupted current.
- Three-pole configuration.
- Withdrawable moving part for a compatible SACE Emax fixed part.
- PR122/P-LSIG R800 electronic overcurrent release.
- Long-time overload protection.
- Short-time short-circuit protection.
- Instantaneous short-circuit protection.
- Integrated earth-fault protection.
- 690 V AC rated voltage.
- 42 kA Icu at 400 V AC.
- Four change-over auxiliary contacts.
- Open/closed circuit-breaker position indication.
- Optional motor operating mechanism capability.
Comprehensive LSIG Protection for Low-Voltage Distribution
Air circuit breakers such as the ABB SACE Emax E1B provide switching and protection for high-current low-voltage distribution circuits. The PR122/P-LSIG electronic release combines long-time overload protection with short-time, instantaneous and earth-fault functions, helping safeguard cables, busbars and downstream equipment against a broad range of electrical fault conditions.
The withdrawable moving-part format is particularly useful in switchboards where maintainability and service continuity are important. The circuit breaker can be withdrawn from its compatible fixed part for inspection or servicing, while auxiliary contacts and open/closed position indication allow its operating state to be incorporated into electrical monitoring and control systems.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial power distribution systems.
- Withdrawable switchgear assemblies.
- Commercial and infrastructure electrical installations.
- Transformer and generator distribution circuits.
- Manufacturing and process plant switchgear.
Technical Specifications
| Series | SACE Emax E1 |
|---|---|
| ABB order code | 1SDA055621R1 |
| Product group | New Emax |
| Product type | Air circuit breaker moving part |
| Rated current (In) | 800 A |
| Rated uninterrupted current (Iu) | 800 A |
| Number of poles | 3 |
| Execution | Withdrawable moving part |
| Trip unit | PR122/P-LSIG R800 |
| Release type | Electronic |
| Protection functions | L-S-I-G (long-time, short-time, instantaneous and earth fault) |
| Overload release setting range | 320–800 A |
| Instantaneous short-circuit release setting range | 1,200–12,000 A |
| Rated voltage | 690 V AC |
| Rated ultimate short-circuit breaking capacity (Icu) at 400 V AC | 42 kA |
| Integrated earth-fault protection | Yes |
| Auxiliary contacts | 4 change-over contacts |
| Position indication | Open / closed |
| Motor drive | Optional |
| DIN rail mounting | No |
| Weight | approx. 55 kg |
| EAN | 8015644569617 |
Frequently Asked Questions
What is the ABB 1SDA055621R1?
The ABB 1SDA055621R1 is an E1B 800 three-pole SACE Emax withdrawable circuit-breaker moving part rated at 800 A and equipped with a PR122/P-LSIG R800 electronic overcurrent release.
What current rating does the ABB E1B 800 have?
The moving circuit-breaker assembly has a rated uninterrupted current of 800 A.
What protection does the PR122/P-LSIG trip unit provide?
The PR122/P-LSIG electronic release provides long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection.
Is the ABB 1SDA055621R1 a fixed circuit breaker?
No. The 1SDA055621R1 is the withdrawable moving part of an ABB SACE Emax E1B circuit breaker and is intended for use with a compatible fixed part.
What auxiliary signalling is included?
The moving part is fitted with four auxiliary change-over contacts and open/closed circuit-breaker position indication for signalling and monitoring applications.
Trusted Low-Voltage Protection from ABB
ABB SACE Emax air circuit breakers are designed for dependable protection and control of low-voltage power distribution systems, combining high-current switching capability with advanced electronic protection and service-friendly withdrawable configurations for demanding installations.
