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.
1SDA071338R1 ABB Emax 2 E1.2B 630A Ekip Hi-Touch LSI 4P Air Circuit Breaker
ABB 1SDA071338R1 is a SACE Emax 2 E1.2B 630 A fixed four-pole air circuit breaker with front terminals, an Ekip Hi-Touch LSI electronic trip unit, 690 V AC rated voltage and 42 kA breaking capacity at 400 V AC.
£6,906.65
Why Choose the ABB 1SDA071338R1 Emax 2 Air Circuit Breaker?
The ABB 1SDA071338R1 is a high-performance SACE Emax 2 E1.2B air circuit breaker (ACB) designed for protection, control and management of low-voltage electrical distribution systems. Rated at 630 A, this fixed four-pole circuit breaker combines ABB’s compact E1.2 frame with the advanced Ekip Hi-Touch LSI electronic trip unit for precise and configurable circuit protection.
As part of the ABB SACE Emax 2 series, the E1.2B is engineered to provide dependable protection while supporting modern power distribution and energy-management requirements. The Ekip Hi-Touch LSI solid-state release provides long-time, short-time and instantaneous protection functions, allowing the breaker to protect electrical installations against overloads and short circuits while offering advanced monitoring and configuration capabilities.
With a rated uninterrupted current of 630 A, rated operational voltage of 690 V AC and rated ultimate short-circuit breaking capacity of 42 kA at 400 V AC, the 1SDA071338R1 is suited to industrial and commercial low-voltage distribution systems. This version features a fixed four-pole configuration with front terminals, providing straightforward integration into switchboards and power distribution assemblies.
Key Advantages
- Compact 630 A air circuit breaker for low-voltage power distribution.
- 42 kA ultimate short-circuit breaking capacity at 400 V AC.
- Advanced Ekip Hi-Touch LSI electronic trip unit for configurable circuit protection.
- LSI protection provides long-time, short-time and instantaneous protection.
- Four-pole configuration switches and protects three phases together with the neutral pole.
- Fixed installation with front terminals for convenient switchboard integration.
Key Features
- ABB SACE Emax 2 E1.2B air circuit breaker.
- 630 A rated current.
- 690 V AC rated operational voltage.
- 42 kA Icu at 400 V AC, 50 Hz.
- Ekip Hi-Touch LSI solid-state electronic release.
- Adjustable overload and short-circuit protection settings.
- Fixed four-pole construction with 100% neutral pole rating.
- Front terminals for the main circuit connections.
- Four auxiliary change-over contacts and open/closed circuit-breaker position indication.
- High mechanical and electrical endurance for demanding installations.
Advanced Protection for Low-Voltage Power Distribution
Air circuit breakers such as the ABB SACE Emax 2 E1.2B protect low-voltage distribution circuits against potentially damaging overload and short-circuit conditions. The 1SDA071338R1 combines a compact physical footprint with a 630 A continuous-current rating and 42 kA short-circuit breaking capacity, making it suitable for main and distribution protection within commercial and industrial switchboards.
The Ekip Hi-Touch LSI trip unit provides adjustable long-time, short-time and instantaneous protection. Its advanced electronic architecture allows protection characteristics to be configured for the electrical installation, supporting effective coordination and selectivity across complex low-voltage distribution networks.
Typical Applications
- Main incoming protection for low-voltage switchboards.
- Industrial electrical distribution systems.
- Commercial building power distribution.
- Transformer secondary and installation protection.
- Manufacturing and process facilities.
- Data centres and critical-power installations.
- Infrastructure and utility distribution systems.
- IEC low-voltage switchgear and controlgear assemblies.
Technical Specifications
| Series | SACE Emax 2 |
|---|---|
| Frame / sub-type | E1.2B |
| Order code / MPN | 1SDA071338R1 |
| Product type | Air circuit breaker |
| Rated current (In) | 630 A |
| Rated uninterrupted current (Iu) | 630 A |
| Rated operational voltage | 690 V AC |
| Rated ultimate short-circuit breaking capacity (Icu) at 400 V AC, 50 Hz | 42 kA |
| Number of poles | 4 |
| Neutral pole current | 100% of Iu |
| Trip unit | Ekip Hi-Touch LSI |
| Release type | Solid-state electronic |
| Protection functions | LSI |
| Overload release adjustment range | 252–630 A |
| Short-time delayed short-circuit adjustment range | 378–6300 A |
| Instantaneous short-circuit adjustment range | 945–9450 A |
| Integrated earth-fault protection | No |
| Current type | AC |
| Installation version | Fixed |
| Terminal connection | Front |
| Connecting capacity | 400 mm² |
| Auxiliary contacts | 4 change-over contacts |
| Electrical durability | 8000 operating cycles |
| Mechanical durability | 20,000 operating cycles |
| Power loss | 31 W |
| Dimensions (W × H × D) | 280 × 296 × 183 mm |
| Net weight | 16 kg |
Frequently Asked Questions
What is the ABB 1SDA071338R1 used for?
The ABB 1SDA071338R1 is a 630 A Emax 2 air circuit breaker used to protect and control low-voltage electrical distribution circuits in industrial, commercial and infrastructure switchboards.
What is the current rating of the ABB 1SDA071338R1?
The circuit breaker has a rated current and rated uninterrupted current of 630 A.
What breaking capacity does the E1.2B 630 provide?
The E1.2B version has a rated ultimate short-circuit breaking capacity of 42 kA at 400 V AC, 50 Hz.
What protection does the Ekip Hi-Touch LSI trip unit provide?
The Ekip Hi-Touch LSI electronic trip unit provides long-time overload, short-time short-circuit and instantaneous short-circuit protection functions. This LSI version does not incorporate integrated earth-fault protection.
Is the ABB 1SDA071338R1 a fixed or withdrawable circuit breaker?
The 1SDA071338R1 is a fixed four-pole air circuit breaker equipped with front terminals for integration into low-voltage switchboards.
Trusted High-Performance Circuit Protection
ABB SACE Emax 2 air circuit breakers combine advanced electronic protection, high reliability and flexible power-management capabilities for modern industrial, commercial and infrastructure low-voltage distribution systems.
