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1SDA062936R1 ABB T7L 1250 PR332/P LSIRc 1250 A 3-Pole MCCB
ABB 1SDA062936R1 is a SACE Tmax T7L 1250 A three-pole fixed moulded case circuit breaker with front terminals, a PR332/P-LSIRc electronic trip unit and 120 kA ultimate breaking capacity at 380–415 V AC.
£9,924.85
Why Choose the ABB T7L 1250 1SDA062936R1 Circuit Breaker?
The ABB 1SDA062936R1 is a high-performance SACE Tmax T7L moulded case circuit breaker (MCCB) designed for demanding low-voltage power distribution systems. ABB identifies this configuration as T7L 1250 PR332/P LSIRc In=1250A 3p F F, combining a 1250 A rated uninterrupted current with a PR332/P-LSIRc electronic trip unit, three-pole construction, fixed installation and front terminals.
The T7L performance level provides an ultimate short-circuit breaking capacity of 120 kA at 380–415 V AC, making the breaker suitable for installations with high prospective fault currents. Its PR332/P-LSIRc electronic trip unit provides long-time overload (L), short-time short-circuit (S) and instantaneous short-circuit (I) protection, with residual-current (Rc) protection available when used with the required external ABB toroid.
The breaker features a manual lever operating mechanism and offers an overload release setting of 500–1250 A, short-time delayed short-circuit adjustment of 750–12500 A and instantaneous short-circuit adjustment of 1875–18750 A. This combination provides flexible protection coordination for high-current industrial feeders, switchboards and power distribution assemblies.
Key Advantages
- High-performance 1250 A moulded case circuit breaker for demanding power distribution applications.
- 120 kA ultimate breaking capacity at 380–415 V AC for high prospective fault levels.
- Advanced PR332/P-LSIRc electronic trip unit.
- Provides adjustable long-time, short-time and instantaneous protection.
- Supports residual-current protection when used with the required ABB external toroid.
- Overload release adjustable from 500–1250 A.
- Short-time delayed short-circuit release adjustable from 750–12500 A.
- Instantaneous short-circuit release adjustable from 1875–18750 A.
- Three-pole fixed configuration with front terminals for switchboard integration.
Key Features
- ABB SACE Tmax T7L 1250 series.
- 1250 A rated uninterrupted current.
- PR332/P-LSIRc electronic protection trip unit.
- Long-time overload (L) protection.
- Short-time short-circuit (S) protection.
- Instantaneous short-circuit (I) protection.
- Residual-current (Rc) protection capability with external toroid.
- 500–1250 A overload release adjustment range.
- 750–12500 A short-time delayed short-circuit adjustment range.
- 1875–18750 A instantaneous short-circuit adjustment range.
- 120 kA Icu at 380–415 V AC.
- Three-pole (3P) construction.
- Fixed installation with front terminals.
- Manual lever / toggle operating mechanism.
Advanced LSIRc Protection for 1250 A Power Distribution
The ABB SACE Tmax T7L platform is designed for high-current low-voltage distribution systems requiring substantial short-circuit interruption capability. The 1SDA062936R1 combines a 1250 A rating with an ultimate breaking capacity of 120 kA at 380–415 V AC, providing robust protection for industrial feeders, main distribution boards and switchgear exposed to high prospective fault currents.
The PR332/P-LSIRc electronic trip unit combines adjustable long-time, short-time and instantaneous overcurrent protection with residual-current capability. For this T7 configuration, ABB specifies that the Rc function requires the 1SDA063869R1 external toroid. This arrangement enables comprehensive protection while retaining adjustable characteristics for coordination with cables, downstream protective devices and other elements of the electrical distribution system.
Typical Applications
- Industrial low-voltage power distribution systems.
- Main and sub-main electrical switchboards.
- High-current feeder and cable protection.
- Manufacturing and process plant power systems.
- Commercial and infrastructure distribution systems.
- Installations requiring residual-current protection capability.
- Systems requiring selective short-circuit coordination.
- OEM switchgear and electrical panel assemblies.
Technical Specifications
| Series | SACE Tmax T7 |
|---|---|
| ABB order code | 1SDA062936R1 |
| GTIN / EAN | 8015644654856 |
| Product type | Moulded case circuit breaker (MCCB) |
| Frame / breaker size | T7 1250 |
| Short-circuit performance level | L |
| Rated uninterrupted current (Iu) | 1250 A |
| Rated operational voltage | 690 V AC |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 8 kV |
| Ultimate short-circuit breaking capacity (Icu) | 200 kA at 220–230 V AC |
| Rated short-time withstand current (Icw) | 20 kA for 1 s |
| Number of poles | 3 |
| Trip unit | PR332/P-LSIRc electronic trip unit |
| Protection functions | Long-time (L), short-time (S), instantaneous (I) and residual-current (Rc) capability |
| Overload release adjustment range | 500–1250 A |
| Short-time delayed short-circuit adjustment range | 750–12500 A |
| Instantaneous short-circuit adjustment range | 1875–18750 A |
| Residual-current setting | 0.2–1 × In |
| Residual-current toroid | ABB 1SDA063869R1 required for Rc protection |
| Installation | Fixed |
| Terminal configuration | Front terminals |
| Main circuit connection | Bolted connection |
| Operating mechanism | Manual lever / toggle |
| Protection rating | IP20 |
| Electrical durability | 2000 cycles |
| Mechanical durability | 10000 cycles |
| Power loss | 47 W per pole at rated operating conditions |
| Dimensions (H × W × D) | 268 × 210 × 154 mm |
| Net weight | 9.7 kg |
| Standard | IEC |
| Application | Power distribution and high-current circuit protection |
| Product group | 310511 – T-Max T4 - T8 |
Frequently Asked Questions
What is the ABB 1SDA062936R1 used for?
The ABB 1SDA062936R1 is a 1250 A three-pole moulded case circuit breaker designed to protect high-current low-voltage power distribution circuits against overload and short-circuit conditions, with residual-current protection capability when used with the required external toroid.
What breaking capacity does the ABB T7L 1250 1SDA062936R1 provide?
The T7L configuration provides an ultimate short-circuit breaking capacity of 120 kA at 380–415 V AC. Its Icu varies with operating voltage, reaching 200 kA at 220–230 V AC.
Which trip unit is fitted to the ABB 1SDA062936R1?
The breaker is equipped with an ABB PR332/P-LSIRc electronic trip unit, providing long-time overload, short-time short-circuit and instantaneous short-circuit protection together with residual-current protection capability.
What are the protection adjustment ranges of the ABB 1SDA062936R1?
The overload release is adjustable from 500–1250 A, short-time delayed short-circuit protection from 750–12500 A, and instantaneous short-circuit protection from 1875–18750 A.
Does the ABB 1SDA062936R1 require an external toroid for residual-current protection?
Yes. ABB specifies that residual-current protection with the PR332/P-LSIRc configuration requires the ABB 1SDA063869R1 toroid.
Trusted ABB Power Distribution Protection
ABB SACE Tmax moulded case circuit breakers combine high short-circuit interruption performance with advanced electronic protection and flexible installation configurations for dependable protection and control of demanding industrial and commercial power distribution systems.
