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1SDA062938R1 ABB T7L 1250 PR231/P LS/I 1250A 4P Circuit Breaker
ABB 1SDA062938R1 is a SACE Tmax T7L 1250 A four-pole fixed moulded-case circuit breaker with a PR231/P LS/I electronic trip unit and 120 kA ultimate breaking capacity at 380–415 V AC for adjustable overload and short-circuit protection.
£9,862.70
Why Choose the ABB T7L 1250 PR231/P LS/I 1250A Circuit Breaker?
The ABB 1SDA062938R1, designated T7L 1250 PR231/P LS/I In=1250A 4p F F, is a high-performance four-pole moulded-case circuit breaker (MCCB) designed for protection and switching in demanding low-voltage power distribution systems. Part of the established ABB SACE Tmax T7 series, it combines a rated uninterrupted current of 1250 A with the PR231/P LS/I electronic trip unit for adjustable overload and short-circuit protection.
The T7L version provides substantial short-circuit interruption capability, with a rated ultimate short-circuit breaking capacity of 120 kA at 380–415 V AC. Its PR231/P LS/I solid-state release provides adjustable long-time overload protection together with selectable short-time or instantaneous short-circuit protection, allowing the breaker to be configured for the protection requirements of high-current distribution circuits.
With its four-pole configuration, fixed installation, front terminals and manual lever operating mechanism, the 1SDA062938R1 is designed for reliable integration into low-voltage switchboards and distribution assemblies. Its 1250 A current rating, high breaking capacity and adjustable electronic protection make it suitable for industrial, commercial and infrastructure installations with significant prospective fault currents.
Key Advantages
- High-performance 1250 A moulded-case circuit breaker for demanding low-voltage distribution systems.
- 120 kA ultimate breaking capacity at 380–415 V AC for high fault-level installations.
- PR231/P LS/I electronic trip unit for adjustable overload and short-circuit protection.
- Selectable short-time delayed or instantaneous short-circuit protection for application flexibility.
- Four-pole configuration suitable for three-phase and neutral distribution networks.
- Fixed installation with front terminals and manual lever operation for straightforward switchboard integration.
Key Features
- ABB SACE Tmax T7L 1250 series.
- 1250 A rated uninterrupted current.
- PR231/P LS/I solid-state electronic trip unit.
- 120 kA Icu at 380–415 V AC.
- Four-pole configuration.
- 0.4–1 × In adjustable long-time overload protection.
- 1.5–12 × In adjustable short-circuit protection.
- Neutral protection settings of OFF, 50% and 100%.
- Fixed installation with front main-circuit terminals.
- Manual lever operating mechanism.
- Rated operational voltage up to 690 V AC.
Advanced Overload and Short-Circuit Protection
The ABB Tmax T7L platform is designed for high-current low-voltage systems where substantial short-circuit interruption capability is required. With a rated uninterrupted current of 1250 A and an ultimate breaking capacity of 120 kA at 380–415 V AC, the 1SDA062938R1 is well suited to distribution networks with high prospective fault levels.
The PR231/P LS/I electronic trip unit provides adjustable overload protection from 500–1250 A and adjustable short-circuit protection, with short-time delayed or instantaneous protection available as alternative functions. This flexibility supports effective protection coordination while the four-pole construction enables use in three-phase and neutral distribution systems.
Typical Applications
- Main low-voltage distribution switchboards.
- Industrial power distribution systems.
- Manufacturing and process plants.
- Commercial buildings and infrastructure installations.
- Transformer secondary and feeder protection.
- Three-phase and neutral distribution networks.
- High fault-level electrical distribution systems.
Technical Specifications
| Series | SACE Tmax T7 |
|---|---|
| ABB order code | 1SDA062938R1 |
| ABB product group | 310511-T-Max T4 - T8 |
| EAN | 8015644654870 |
| Product type | Moulded-case circuit breaker (MCCB) |
| Frame | T7L 1250 |
| Rated uninterrupted current | 1250 A |
| Number of poles | 4 |
| Trip unit | PR231/P LS/I |
| Release type | Electronic |
| Long-time overload adjustment | 0.4–1 × In |
| Long-time overload adjustment range | 500–1250 A |
| Short-circuit protection adjustment | 1.5–12 × In |
| Short-circuit protection adjustment range | 1875–15000 A |
| Neutral protection settings | OFF / 50% / 100% |
| Rated operational voltage | 690 V AC |
| Rated insulation voltage | 1000 V |
| Rated impulse withstand voltage | 8 kV |
| Ultimate short-circuit breaking capacity Icu at 220–230 V AC | 200 kA |
| Ultimate short-circuit breaking capacity Icu at 380–415 V AC | 120 kA |
| Ultimate short-circuit breaking capacity Icu at 440 V AC | 100 kA |
| Ultimate short-circuit breaking capacity Icu at 500 V AC | 85 kA |
| Ultimate short-circuit breaking capacity Icu at 690 V AC | 50 kA |
| Rated service short-circuit breaking capacity Ics at 380–415 V AC | 120 kA |
| Rated short-time withstand current Icw | 20 kA for 1 s |
| Installation | Fixed |
| Terminal position | Front |
| Operating mechanism | Manual lever |
| Electrical durability | 2000 cycles |
| Mechanical durability | 10000 cycles |
| Power loss | 47 W per pole at rated operating conditions |
| Dimensions (H × W × D) | 268 × 280 × 154 mm |
| Net weight | 12.5 kg |
Frequently Asked Questions
What is the ABB 1SDA062938R1 used for?
The ABB 1SDA062938R1 is a 1250 A four-pole moulded-case circuit breaker designed for switching and protection against overload and short-circuit conditions in high-current low-voltage electrical distribution systems.
What trip unit is fitted to the ABB T7L 1250 1SDA062938R1?
The circuit breaker is fitted with an ABB PR231/P LS/I electronic trip unit, providing adjustable long-time overload protection and selectable short-time or instantaneous short-circuit protection.
What is the breaking capacity of the ABB T7L 1250 1SDA062938R1?
The 1SDA062938R1 has a rated ultimate short-circuit breaking capacity of 120 kA at 380–415 V AC, increasing to 200 kA at 220–230 V AC.
What is the protection adjustment range of the PR231/P LS/I trip unit?
The long-time overload protection is adjustable from 0.4–1 × In, corresponding to 500–1250 A, while short-circuit protection is adjustable from 1.5–12 × In.
Where is the ABB 1SDA062938R1 typically installed?
The breaker is typically installed in main low-voltage switchboards, industrial distribution panels, transformer secondary circuits and infrastructure power systems requiring 1250 A four-pole protection and high short-circuit interruption performance.
Trusted Protection from ABB
ABB Tmax moulded-case circuit breakers are widely used in industrial, commercial and infrastructure power distribution systems, providing dependable circuit protection, flexible electronic trip functionality and high short-circuit interruption performance.
