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1SDA056570R1 ABB E3V1250 PR121/P-LSIG 1250A 4P Fixed Rear Horizontal Air Circuit Breaker
ABB 1SDA056570R1 E3V1250 SACE Emax 1250 A four-pole fixed air circuit breaker with rear horizontal terminals and a PR121/P-LSIG R1250 electronic release for comprehensive low-voltage power distribution protection.
£13,013.40
Why Choose the ABB E3V1250 PR121/P-LSIG 1250A 4P F HR Air Circuit Breaker?
The ABB E3V1250 PR121/P-LSIG, order code 1SDA056570R1, is a high-performance SACE Emax air circuit breaker designed for switching and comprehensive protection in demanding low-voltage power distribution systems. This E3 V configuration combines a 1250 A rated current, four-pole construction and a PR121/P-LSIG R1250 electronic overcurrent release.
Supplied as a fixed circuit breaker with rear horizontal terminals, the E3V1250 provides a robust installation arrangement for industrial and commercial switchboards. The PR121/P-LSIG release provides long-time, short-time, instantaneous and ground-fault protection functions, helping protect electrical distribution circuits against overloads, short circuits and earth faults.
With a rated operational voltage of up to 690 V AC, rated insulation voltage of 1000 V and rated impulse withstand voltage of 12 kV, the E3V1250 is engineered for substantial electrical distribution duties. Its V performance level provides an ultimate short-circuit breaking capacity of 130 kA at 220–440 V AC and 100 kA at 500–690 V AC.
Key Advantages
- High-performance ABB SACE Emax E3 V air circuit breaker.
- 1250 A rated current for high-current low-voltage distribution systems.
- Four-pole configuration for four-pole switching and circuit protection.
- PR121/P-LSIG R1250 electronic release provides comprehensive overcurrent and ground-fault protection.
- Fixed configuration with rear horizontal terminals for robust switchboard integration.
- High V-class breaking performance with Icu up to 130 kA.
Key Features
- ABB SACE Emax E3 V circuit breaker platform.
- 1250 A rated current.
- Four-pole construction.
- PR121/P-LSIG R1250 electronic overcurrent release.
- Long-time, short-time, instantaneous and ground-fault LSIG protection functions.
- Fixed version (F).
- Rear horizontal (HR) terminals.
- Rated operational voltage up to 690 V AC.
- Fitted with four auxiliary contacts.
- Open/closed circuit-breaker position indication.
Reliable High-Current Protection for Low-Voltage Distribution
Air circuit breakers such as the ABB SACE Emax E3V1250 provide switching and protection for main incomers, feeders and other high-current circuits in low-voltage distribution systems. Their high short-circuit breaking capability enables them to interrupt substantial fault currents while helping protect switchgear, cabling and downstream electrical equipment.
The PR121/P-LSIG electronic release provides long-time overload, short-time short-circuit, instantaneous short-circuit and ground-fault protection. Combined with the E3 V high-performance breaker platform and fixed rear-horizontal-terminal configuration, this makes the 1SDA056570R1 suitable for critical industrial and commercial power distribution installations.
Typical Applications
- Main low-voltage distribution switchboards.
- Industrial power distribution systems.
- Main incomer and high-current feeder protection.
- Manufacturing and process plants.
- Commercial and infrastructure electrical distribution.
- Power distribution centres requiring high short-circuit interruption capability.
Technical Specifications
| Series | SACE Emax |
|---|---|
| ABB order code | 1SDA056570R1 |
| Product group | New Emax |
| Product type | Air circuit breaker |
| Frame / subtype | E3 |
| Short-circuit performance level | V |
| Rated current (In) | 1250 A |
| Rated operational current (Ie) | 1250 A |
| Rated uninterrupted current (Iu) | 1250 A |
| Number of poles | 4P |
| Current type | AC |
| Release | PR121/P-LSIG R1250 |
| Release type | Electronic (EL) |
| Protection functions | Long-time, short-time, instantaneous and ground-fault (LSIG) |
| Version | Fixed (F) |
| Terminal connection | Rear horizontal (HR) |
| Rated operational voltage | 690 V AC |
| Rated voltage (Ur) | 690 V |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Rated ultimate short-circuit breaking capacity (Icu) | 130 kA at 220–440 V AC; 100 kA at 500–690 V AC |
| Rated service short-circuit breaking capacity (Ics) | 100 kA at 220–440 V AC; 85 kA at 500–690 V AC |
| Rated short-time withstand current (Icw) | 85 kA for 1 s; 65 kA for 3 s |
| Power loss | 60 W |
| Electrical durability | 12,000 cycles |
| Mechanical durability | 20,000 cycles |
| Dimensions (W × H × D) | 530 × 418 × 302 mm |
| Net weight | 76 kg |
| EAN | 8015644579104 |
| Standard | IEC |
Frequently Asked Questions
What is the ABB 1SDA056570R1?
The ABB 1SDA056570R1 is a SACE Emax E3V1250 four-pole fixed air circuit breaker rated at 1250 A, equipped with rear horizontal terminals and a PR121/P-LSIG R1250 electronic overcurrent release.
What protection functions does the PR121/P-LSIG release provide?
The PR121/P-LSIG electronic release provides long-time overload, short-time short-circuit, instantaneous short-circuit and ground-fault protection functions.
Is the ABB E3V1250 1SDA056570R1 fixed or withdrawable?
This configuration is a fixed circuit breaker with rear horizontal terminals for permanent installation in a compatible low-voltage switchboard.
What is the rated current of ABB 1SDA056570R1?
The circuit breaker has a rated current, operational current and uninterrupted current of 1250 A.
What is the short-circuit breaking capacity of this E3V1250?
The rated ultimate short-circuit breaking capacity is 130 kA at 220–440 V AC and 100 kA at 500–690 V AC.
What terminal arrangement does ABB 1SDA056570R1 use?
The breaker is supplied with rear horizontal (HR) terminals for fixed installation within a compatible power distribution switchboard.
Trusted by Electrical Distribution Professionals Worldwide
ABB SACE Emax air circuit breakers are widely used in industrial, commercial and infrastructure power distribution systems, combining dependable switching, electronic protection and high short-circuit performance for critical low-voltage electrical installations.
