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1SDA072053R1 ABB Emax 2 E1.2B 630 Ekip Dip LSIG 3-Pole Withdrawable Air Circuit Breaker
ABB 1SDA072053R1 is an Emax 2 E1.2B 630 A three-pole withdrawable air circuit breaker moving part with an Ekip Dip LSIG electronic trip unit for overload, short-circuit and earth-fault protection.
£2,828.87
Why Choose the ABB 1SDA072053R1 Emax 2 Air Circuit Breaker?
The ABB 1SDA072053R1 is a high-performance Emax 2 E1.2B air circuit breaker designed for protection, switching and isolation in low-voltage electrical distribution systems. This three-pole withdrawable circuit breaker has a rated uninterrupted current of 630 A and incorporates an Ekip Dip LSIG electronic trip unit providing long-time, short-time, instantaneous and earth-fault protection.
As part of the advanced ABB Emax 2 series, the E1.2 platform combines compact dimensions with dependable protection for industrial, commercial and infrastructure switchboards. The B performance level provides a rated ultimate short-circuit breaking capacity of 42 kA at 400 V AC, while the Ekip Dip electronic release allows the protection characteristics to be configured for the requirements of the connected distribution system.
The E1.2B 630 Ekip Dip LSIG 3p WMP is the moving part of a withdrawable circuit-breaker system and connects to the main circuit through its separate fixed chassis. This arrangement supports maintainable switchboard designs where the breaker can be isolated and withdrawn without removing the complete fixed portion from the installation.
Key Advantages
- Compact 630 A Emax 2 air circuit breaker for low-voltage distribution applications.
- Three-pole configuration for three-phase electrical systems.
- Ekip Dip LSIG electronic trip unit provides long-time, short-time, instantaneous and earth-fault protection.
- Rated ultimate short-circuit breaking capacity of 42 kA at 400 V AC.
- Withdrawable moving-part execution supports convenient switchboard isolation and maintenance.
- Four change-over auxiliary contacts provide circuit-breaker status signalling.
Key Features
- ABB Emax 2 E1.2B series.
- 630 A rated uninterrupted current.
- Three-pole construction.
- Ekip Dip LSIG electronic protection release.
- Long-time overload, short-time, instantaneous and integrated earth-fault protection.
- 690 V rated voltage.
- 42 kA ultimate short-circuit breaking capacity at 400 V AC.
- Adjustable overload protection from 252–630 A.
- Withdrawable moving-part configuration for use with a separate fixed chassis.
- Four change-over auxiliary contacts and switched-off indication.
Reliable Protection for Low-Voltage Distribution Systems
Air circuit breakers such as the ABB Emax 2 E1.2 protect low-voltage distribution systems against overloads, short circuits and earth faults while providing dependable switching and isolation. The Ekip Dip LSIG electronic release monitors circuit current and provides long-time, short-time, instantaneous and earth-fault protection to help safeguard cables, busbars, transformers and connected electrical equipment.
The withdrawable E1.2 platform is particularly useful in switchboards where serviceability and operational flexibility are important. The moving circuit breaker can interface with a separate fixed chassis, allowing the breaker to be disconnected and withdrawn for inspection or maintenance while the fixed switchboard connections remain installed.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial power distribution systems.
- Transformer secondary protection.
- Distribution feeder protection.
- Commercial and infrastructure electrical systems.
- Manufacturing and process-industry switchgear.
Technical Specifications
| Series | Emax 2 |
|---|---|
| ABB order code | 1SDA072053R1 |
| Product type | Air circuit breaker |
| Frame | E1.2 |
| Performance level | B |
| Rated uninterrupted current | 630 A |
| Rated voltage | 690 V |
| Number of poles | 3 |
| Trip unit | Ekip Dip LSIG |
| Protection functions | L, S, I, G |
| 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 | Yes |
| Ultimate short-circuit breaking capacity | 42 kA at 400 V, 50 Hz |
| Execution | Withdrawable moving part |
| Main circuit connection | Through separate chassis part |
| Auxiliary contacts | 4 change-over contacts |
| Switched-off indicator | Yes |
| Protection rating | IP30 |
Frequently Asked Questions
What is the ABB 1SDA072053R1?
The ABB 1SDA072053R1 is an Emax 2 E1.2B three-pole withdrawable air circuit breaker moving part rated at 630 A and equipped with an Ekip Dip LSIG electronic trip unit.
What protection functions does the Ekip Dip LSIG trip unit provide?
The Ekip Dip LSIG release provides long-time (L), short-time (S), instantaneous (I) and earth-fault (G) protection functions.
What is the breaking capacity of the ABB E1.2B 630?
The E1.2B configuration has a rated ultimate short-circuit breaking capacity of 42 kA at 400 V, 50 Hz.
Is the ABB 1SDA072053R1 fixed or withdrawable?
The 1SDA072053R1 is a withdrawable moving-part circuit breaker designed to connect to the main electrical circuit through a compatible separate fixed chassis.
Does the ABB 1SDA072053R1 provide earth-fault protection?
Yes. Its Ekip Dip LSIG trip unit includes integrated earth-fault protection in addition to overload and short-circuit protection.
Trusted by Electrical Distribution Professionals Worldwide
ABB Emax 2 air circuit breakers are widely used in industrial, commercial and infrastructure electrical systems where dependable switching, configurable electronic protection and maintainable low-voltage distribution equipment are required.
