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1SDA056562R1 ABB E3V1250 PR121/P-LSIG 1250A 3P Fixed Air Circuit Breaker
ABB 1SDA056562R1 is a SACE Emax E3V 1250 A three-pole fixed air circuit breaker with rear horizontal terminals and a PR121/P-LSIG R1250 electronic release providing long-time, short-time, instantaneous and earth-fault protection.
£10,602.93
Why Choose the ABB E3V1250 PR121/P-LSIG 1250A 3P Fixed Air Circuit Breaker?
The ABB E3V1250 PR121/P-LSIG, order code 1SDA056562R1, is a high-performance SACE Emax air circuit breaker designed for protection and switching in demanding low-voltage power distribution systems. This three-pole fixed breaker has a rated uninterrupted current of 1250 A and is equipped with the PR121/P-LSIG R1250 electronic overcurrent release.
The PR121/P-LSIG release provides long-time, short-time, instantaneous and earth-fault protection. These LSIG functions help protect conductors, switchboards and connected equipment against sustained overloads, short circuits and earth faults, providing comprehensive electronic protection for critical power distribution applications.
This version features a fixed construction with rear horizontal terminals and is fitted with four auxiliary contacts together with circuit-breaker open/closed position indication. With a rated operational voltage of 690 V AC and an ultimate short-circuit breaking capacity of up to 130 kA, the E3V1250 is engineered for demanding industrial, commercial and infrastructure switchboards.
Key Advantages
- High-performance ABB SACE Emax E3V air circuit breaker.
- 1250 A rated uninterrupted current for high-current low-voltage distribution.
- Three-pole fixed configuration with rear horizontal terminals.
- PR121/P-LSIG R1250 electronic overcurrent release.
- Comprehensive long-time, short-time, instantaneous and earth-fault protection.
- 130 kA ultimate short-circuit breaking capacity at 220–440 V AC.
- 100 kA service short-circuit breaking capacity at 220–440 V AC.
- Four auxiliary contacts provide circuit-breaker status signalling for control and monitoring systems.
Key Features
- ABB SACE Emax E3V series.
- 1250 A rated current.
- 3-pole fixed circuit-breaker construction.
- Rear horizontal main terminals.
- PR121/P-LSIG R1250 electronic release.
- Long-time (L) overload protection.
- Short-time (S) short-circuit protection.
- Instantaneous (I) short-circuit protection.
- Earth-fault (G) protection.
- 690 V AC rated operational voltage.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
- 85 kA short-time withstand current for 1 s.
Comprehensive LSIG Protection for High-Fault-Level Distribution
Air circuit breakers such as the ABB SACE Emax E3V provide switching and overcurrent protection for major low-voltage distribution systems. The E3V performance level combines substantial short-circuit interruption capability with robust breaker construction, helping protect switchboards, conductors and connected equipment in installations where high prospective fault currents can occur.
The PR121/P-LSIG R1250 electronic release combines long-time protection against sustained overloads, short-time protection for coordinated fault clearing, instantaneous protection against severe short circuits and integrated earth-fault protection. Together with the 1250 A rating, up to 130 kA ultimate breaking capacity and fixed rear-horizontal-terminal construction, the 1SDA056562R1 provides comprehensive protection for demanding power distribution installations.
Typical Applications
- Main low-voltage distribution switchboards.
- Industrial power distribution systems.
- Manufacturing and process plants.
- Commercial and infrastructure electrical installations.
- Transformer secondary protection.
- Main incoming circuit-breaker applications.
- High-fault-level outgoing feeder protection.
- Power distribution centres and fixed switchgear assemblies.
Technical Specifications
| Series | SACE Emax E3V |
|---|---|
| ABB order code | 1SDA056562R1 |
| Product type | Air circuit breaker |
| Frame / performance level | E3V |
| Rated current (In) | 1250 A |
| Rated operational current (Ie) | 1250 A |
| Rated uninterrupted current (Iu) | 1250 A |
| Number of poles | 3 |
| Current type | AC |
| Configuration | Fixed |
| Terminal connection | Rear horizontal |
| Trip unit | PR121/P-LSIG R1250 |
| Release type | Electronic |
| Protection functions | Long-time (L), short-time (S), instantaneous (I), earth fault (G) |
| Rated operational voltage | 690 V AC |
| Rated voltage | 690 V |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Ultimate short-circuit breaking capacity (Icu) | 130 kA at 220–440 V AC; 100 kA at 500–690 V AC |
| Service short-circuit breaking capacity (Ics) | 100 kA at 220–440 V AC; 85 kA at 500–690 V AC |
| Short-time withstand current (Icw) | 85 kA for 1 s; 65 kA for 3 s |
| Integrated earth-fault protection | Yes |
| Auxiliary contacts | 4 |
| Position indication | Circuit breaker open / closed |
| Power loss | 60 W |
| Electrical durability | 12,000 cycles at ≤440 V; 12,000 cycles at 500–690 V |
| Electrical operating frequency | 20 cycles per hour |
| Mechanical durability | 20,000 cycles |
| Mechanical operating frequency | 60 cycles per hour |
| Dimensions (W × H × D) | 404 × 418 × 302 mm |
| Net weight | 60 kg |
| Standard | IEC |
| Customs tariff number | 85362090 |
| EAN | 8015644579029 |
Frequently Asked Questions
What is the ABB 1SDA056562R1?
The ABB 1SDA056562R1 is a SACE Emax E3V 1250 A three-pole fixed air circuit breaker with rear horizontal terminals and a PR121/P-LSIG R1250 electronic overcurrent release.
What protection functions does the PR121/P-LSIG provide?
The PR121/P-LSIG electronic release provides long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection.
What is the breaking capacity of the ABB E3V1250?
The E3V1250 provides an ultimate short-circuit breaking capacity of 130 kA at 220–440 V AC and 100 kA at 500–690 V AC.
Is the ABB 1SDA056562R1 fixed or withdrawable?
This model is a fixed three-pole circuit breaker equipped with rear horizontal main terminals for integration into a compatible low-voltage switchboard.
Does the ABB 1SDA056562R1 include earth-fault protection?
Yes. The G in the PR121/P-LSIG designation identifies the integrated earth-fault protection function, complementing the long-time, short-time and instantaneous overcurrent protection functions.
Trusted Protection for Critical Power Systems
ABB SACE Emax air circuit breakers combine high short-circuit performance, comprehensive electronic protection and robust switchboard integration to provide dependable protection for demanding industrial, commercial and infrastructure power distribution systems.
