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1SDA071843R1 ABB E4.2H 4000 Ekip Dip LSIG 4P Air Circuit Breaker
ABB 1SDA071843R1 SACE Emax 2 E4.2H fixed four-pole 4000 A air circuit breaker with an Ekip Dip LSIG electronic trip unit for comprehensive high-current low-voltage power distribution protection.
£23,212.16
Why Choose the ABB E4.2H 4000 Ekip Dip LSIG 4P Air Circuit Breaker?
The ABB 1SDA071843R1 is a high-performance SACE Emax 2 E4.2H air circuit breaker (ACB) rated at 4000 A, designed for reliable protection and switching in demanding low-voltage power distribution systems. This fixed four-pole breaker combines high current capacity and strong short-circuit performance with the comprehensive Ekip Dip LSIG electronic trip unit.
The Ekip Dip LSIG solid-state release provides long-time overload, short-time selective, instantaneous short-circuit and earth-fault protection. Protection thresholds are configurable using DIP switches, providing a practical solution for applications requiring adjustable electronic protection without the touchscreen interface of higher-level Ekip releases.
The E4.2H offers an ultimate short-circuit breaking capacity of 100 kA at 380–440 V AC and 85 kA at 500–690 V AC, together with a rated operational voltage of 690 V AC. This version uses a fixed four-pole construction with rear horizontal terminals and is supplied with four auxiliary contacts plus circuit-breaker open/closed position indication.
Key Advantages
- High-performance ABB SACE Emax 2 air circuit breaker for demanding low-voltage distribution systems.
- 4000 A rated uninterrupted current for high-current electrical installations.
- Four-pole configuration for comprehensive switching and protection.
- Reliable Ekip Dip LSIG electronic trip unit with DIP-switch adjustment.
- LSIG functionality provides long-time overload, short-time selective, instantaneous short-circuit and earth-fault protection.
- 100 kA ultimate short-circuit breaking capacity at 380–440 V AC.
- 85 kA ultimate short-circuit breaking capacity at 500–690 V AC.
- Fixed installation with rear horizontal terminals for switchboard integration.
Key Features
- ABB SACE Emax 2 E4.2H frame.
- 4000 A rated uninterrupted current.
- Four-pole construction.
- Fixed circuit-breaker execution.
- Rear horizontal terminals.
- Ekip Dip LSIG solid-state electronic protection release.
- Adjustable long-time overload protection.
- Adjustable short-time selective protection.
- Adjustable instantaneous short-circuit protection.
- Adjustable earth-fault protection.
- DIP-switch configuration of protection thresholds.
- Four auxiliary contacts with circuit-breaker open/closed position indication.
Comprehensive LSIG Protection for High-Current Distribution
ABB SACE Emax 2 air circuit breakers provide dependable switching and protection for demanding low-voltage electrical networks. The E4.2H combines a substantial 4000 A current rating with an ultimate breaking capacity of up to 100 kA, making it suitable for high-power installations where substantial prospective short-circuit currents must be safely interrupted.
The Ekip Dip LSIG release combines long-time overload (L), short-time selective (S), instantaneous short-circuit (I) and earth-fault (G) protection. Adjustable electronic protection thresholds support coordination with other protective devices while integrated earth-fault protection extends coverage against ground faults in industrial, commercial and infrastructure power distribution networks.
Typical Applications
- Main low-voltage distribution switchboards.
- High-current industrial power distribution systems.
- Manufacturing and process plants.
- Commercial and infrastructure electrical installations.
- Transformer secondary protection.
- Generator and utility distribution systems.
- High fault-level electrical networks.
- High-current incomer and feeder protection.
Technical Specifications
| Series | SACE Emax 2 |
|---|---|
| ABB order code | 1SDA071843R1 |
| EAN | 8015644756932 |
| Product type | Air circuit breaker (ACB) |
| Frame | E4.2H |
| Short-circuit performance level | H |
| Rated uninterrupted current (Iu) | 4000 A |
| Number of poles | 4 |
| Current type | AC |
| Installation | Fixed |
| Terminal arrangement | Rear horizontal |
| Trip unit | Ekip Dip LSIG |
| Release type | Solid-state electronic |
| Protection functions | L, S, I and G |
| Rated operational voltage (Ue) | 690 V AC |
| Rated insulation voltage (Ui) | 1000 V AC |
| Frequency | 50/60 Hz |
| Ultimate short-circuit breaking capacity (Icu) | 100 kA at 380 V AC |
| Rated short-time withstand current (Icw) | 85 kA for 1 s |
| Long-time overload adjustment | 0.4–1 × In |
| Short-time protection adjustment | 0.6–10 × In |
| Instantaneous protection adjustment | 1.5–15 × In |
| Earth-fault protection adjustment | 0.1–1 × In |
| Auxiliary contacts | 4 |
| Breaker position indication | Open/closed |
| Product width | 510 mm |
| Product depth | 270 mm |
| Standard | IEC 60947-2 |
Frequently Asked Questions
What is the ABB 1SDA071843R1 used for?
The ABB 1SDA071843R1 is an Emax 2 air circuit breaker designed for switching and comprehensive protection in high-current low-voltage power distribution systems, including industrial, transformer and infrastructure installations.
What is the rated current of this circuit breaker?
The E4.2H circuit breaker has a rated uninterrupted current of 4000 A.
What protection functions does the Ekip Dip LSIG trip unit provide?
The Ekip Dip LSIG provides long-time overload, short-time selective, instantaneous short-circuit and earth-fault protection, represented by the L, S, I and G protection functions.
What is the breaking capacity of the ABB 1SDA071843R1?
The E4.2H provides an ultimate short-circuit breaking capacity of 100 kA at 380–440 V AC and 85 kA at 500–690 V AC.
How is the ABB E4.2H 4000 1SDA071843R1 installed?
This version is a fixed four-pole air circuit breaker equipped with rear horizontal terminals for integration into low-voltage switchboards.
Trusted for High-Current Power Distribution
ABB SACE Emax 2 air circuit breakers combine high short-circuit performance, comprehensive electronic protection and robust construction for dependable operation in demanding industrial, commercial and infrastructure power distribution systems.
