Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
1SDA059178R1 ABB E1B 1000A 3-Pole Withdrawable Air Circuit Breaker with PR121/P-LSIG
ABB 1SDA059178R1 is a SACE Emax E1B 1000 A three-pole withdrawable air circuit-breaker moving part with a PR121/P-LSIG electronic release providing long-time, short-time, instantaneous and earth-fault protection.
£8,891.99
Why Choose the ABB 1SDA059178R1 E1B 1000 Air Circuit Breaker?
The ABB 1SDA059178R1 is a SACE Emax E1B 1000 air circuit breaker moving part designed for dependable protection and switching in industrial low-voltage power-distribution systems. This three-pole withdrawable model is rated at 1000 A and incorporates an ABB PR121/P-LSIG electronic overcurrent release.
The PR121/P-LSIG protection unit provides long-time (L), short-time (S), instantaneous (I) and earth-fault (G) protection functions, enabling comprehensive protection of feeders, transformers and distribution systems. The breaker has a rated operational voltage of 690 V AC, rated insulation voltage of 1000 V and rated impulse withstand voltage of 12 kV.
As a withdrawable moving part, the 1SDA059178R1 is intended for integration with the appropriate SACE Emax E1 fixed part. It also includes four auxiliary changeover contacts and circuit-breaker open/closed position indication, providing useful status information for switchboard control, signalling and monitoring systems.
Key Advantages
- 1000 A E1B air circuit breaker for substantial industrial distribution duties.
- PR121/P-LSIG electronic release provides long-time, short-time, instantaneous and earth-fault protection.
- 42 kA ultimate breaking capacity at 400 V AC.
- Three-pole configuration for three-phase power-distribution systems.
- Withdrawable moving-part design supports maintainable switchgear architectures.
- Rated operational voltage up to 690 V AC.
- Includes four auxiliary changeover contacts and open/closed breaker position indication.
- Part of the established ABB SACE Emax air circuit-breaker family.
Key Features
- ABB SACE Emax E1B 1000 platform.
- 1000 A rated current.
- 3-pole construction.
- Withdrawable (W) moving part (MP).
- PR121/P-LSIG electronic protection release.
- LSIG protection: long-time, short-time, instantaneous and earth-fault.
- 42 kA Icu at 400 V AC.
- 42 kA Ics at 400 V AC.
- 42 kA short-time withstand current for 1 s.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
- Four auxiliary changeover contacts.
- Circuit-breaker open/closed position indication.
Reliable LSIG Protection for Industrial Power Distribution
The ABB PR121/P-LSIG release provides a coordinated set of electronic protection functions for industrial distribution systems. Long-time protection responds to sustained overloads, short-time and instantaneous functions protect against high fault currents, and the earth-fault function adds dedicated protection against ground-fault conditions.
Combined with the E1B breaker's 1000 A current rating, 42 kA short-circuit performance and withdrawable construction, these functions make the 1SDA059178R1 well suited to switchboards where comprehensive circuit protection, equipment serviceability and dependable interruption of fault currents are required.
Typical Applications
- Industrial low-voltage main distribution boards.
- Transformer and generator protection.
- Main incomer and feeder protection.
- Manufacturing and process plant switchgear.
- Commercial and infrastructure power distribution.
- Withdrawable industrial switchboards.
- Systems requiring integrated earth-fault protection.
- OEM power-distribution assemblies.
Technical Specifications
| Series | SACE Emax |
|---|---|
| ABB order code | 1SDA059178R1 |
| Extended product type | E1B1000PR121/P-LSIGIn=1000A3pWMP |
| Product type | Air circuit breaker moving part |
| Frame / sub-type | E1 |
| Short-circuit performance level | B |
| Rated current (In) | 1000 A |
| Rated operational current (Ie) | 1000 A |
| Rated uninterrupted current (Iu) | 1000 A |
| Rated operational voltage | 690 V AC |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Number of poles | 3 |
| Release | PR121/P-LSIG |
| Release type | Electronic |
| Protection functions | L, S, I, G |
| Overload release setting range | 400–1000 A |
| Short-time delayed short-circuit setting range | 1000–10000 A |
| Instantaneous short-circuit setting range | 1500–15000 A |
| Rated ultimate short-circuit breaking capacity (Icu) at 400 V AC | 42 kA |
| Rated service short-circuit breaking capacity (Ics) at 400 V AC | 42 kA |
| Rated short-time withstand current (Icw) | 42 kA for 1 s; 36 kA for 3 s |
| Auxiliary contacts | 4 changeover contacts |
| Position indication | Circuit breaker open / closed |
| Mounting configuration | Withdrawable |
| Component | Moving part (MP) |
| Motor drive | Optional |
| Net weight | 55 kg |
| EAN | 8015644615390 |
| Standard | IEC |
Frequently Asked Questions
What is the ABB 1SDA059178R1?
The ABB 1SDA059178R1 is a SACE Emax E1B 1000 A three-pole withdrawable air circuit-breaker moving part equipped with a PR121/P-LSIG electronic protection release.
What protection functions does the PR121/P-LSIG release provide?
The PR121/P-LSIG provides long-time, short-time, instantaneous and earth-fault protection, commonly abbreviated as LSIG.
What is the breaking capacity of the ABB 1SDA059178R1?
The E1B version has a rated ultimate short-circuit breaking capacity of 42 kA at 400 V AC, with a rated service short-circuit breaking capacity of 42 kA at the same voltage.
Is the ABB 1SDA059178R1 fixed or withdrawable?
The 1SDA059178R1 is a withdrawable moving part designed for use with the appropriate ABB SACE Emax E1 fixed part.
Does the ABB 1SDA059178R1 include auxiliary contacts?
Yes. The breaker moving part is fitted with four auxiliary changeover contacts and provides circuit-breaker open/closed position indication.
Trusted ABB SACE Emax Circuit Protection
ABB SACE Emax air circuit breakers combine high-current switching, electronic protection and withdrawable switchgear architecture to provide dependable protection and maintainability for demanding industrial low-voltage distribution systems.
