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.
1SDA054378R1 ABB T5L400 PR222DS/P-LSIG 320 A 4-Pole MCCB
ABB 1SDA054378R1 SACE Tmax T5L400 fixed four-pole 320 A moulded case circuit breaker with PR222DS/P-LSIG electronic trip unit, adjustable LSIG protection and 120 kA breaking capacity at 400 V AC.
£4,862.86
Why Choose the ABB T5L400 PR222DS/P-LSIG 320 A 1SDA054378R1 Circuit Breaker?
The ABB 1SDA054378R1 is a high-performance SACE Tmax T5L 400 moulded case circuit breaker (MCCB) designed for reliable protection and isolation of demanding low-voltage electrical distribution systems. Configured as a fixed four-pole breaker with front terminals, it combines a 320 A rated current with ABB's PR222DS/P-LSIG electronic trip unit.
Part of the proven ABB SACE Tmax T5 series, the T5L400 provides electronic LSIG protection, covering long-time overload, short-time delayed short-circuit, instantaneous short-circuit and earth-fault protection. Its adjustable electronic release allows protection characteristics to be coordinated with cables, downstream equipment and other protective devices in industrial and commercial distribution networks.
The PR222DS/P-LSIG release provides a 128–320 A overload adjustment range, a 192–3,200 A short-time delayed short-circuit adjustment range and a 480–3,840 A instantaneous short-circuit adjustment range. Combined with the T5L's 120 kA ultimate breaking capacity at 400 V AC, the 1SDA054378R1 delivers flexible protection for four-pole distribution systems with substantial prospective fault currents.
Key Advantages
- High-performance ABB SACE Tmax T5L 400 moulded case circuit breaker.
- 320 A rated current for substantial industrial and commercial loads.
- Four-pole configuration for multipole low-voltage distribution systems.
- PR222DS/P-LSIG electronic trip unit for precise and adjustable circuit protection.
- LSIG protection functions cover overload, short-time, instantaneous and earth-fault conditions.
- 128–320 A overload adjustment range for flexible protection coordination.
- 120 kA ultimate breaking capacity at 400 V AC for high-fault-level installations.
- Fixed mounting with front terminals for straightforward switchboard integration.
Key Features
- ABB SACE Tmax T5L 400 circuit breaker platform.
- 320 A rated current.
- 4-pole construction.
- PR222DS/P-LSIG solid-state electronic release.
- Long-time overload protection.
- Short-time delayed short-circuit protection.
- Instantaneous short-circuit protection.
- Earth-fault protection.
- Adjustable overload protection from 128–320 A.
- Adjustable short-time protection from 192–3,200 A.
- Adjustable instantaneous protection from 480–3,840 A.
- 120 kA Icu at 400 V AC.
- Fixed circuit breaker configuration with front terminals.
Reliable Electronic Protection for Power Distribution
The ABB SACE Tmax T5L platform is designed for demanding low-voltage power distribution where high breaking performance and flexible protection settings are important. With a 400 A frame size and a 320 A electronic release, the 1SDA054378R1 provides substantial circuit capacity while allowing protection settings to be coordinated with cables, downstream equipment and other protective devices.
Its PR222DS/P-LSIG electronic trip unit addresses long-time overload, short-time delayed short-circuit, instantaneous short-circuit and earth-fault conditions. This combination provides comprehensive electronic protection and improved coordination for industrial and commercial distribution networks, while the four-pole construction supports multipole switching and protection requirements.
Typical Applications
- Industrial low-voltage power distribution systems.
- Main and sub-distribution switchboards.
- Three-phase four-wire electrical distribution panels.
- Manufacturing and process installations.
- Commercial and infrastructure power distribution.
- Applications requiring electronic earth-fault protection.
Technical Specifications
| Series | SACE Tmax T5 |
|---|---|
| ABB order code | 1SDA054378R1 |
| Product group | 310511-T-Max T4 - T8 |
| Product type | Moulded case circuit breaker (MCCB) |
| Frame | T5 400 |
| Performance level | L |
| Rated current (In) | 320 A |
| Number of poles | 4 |
| Trip unit | PR222DS/P-LSIG electronic release |
| Protection functions | LSIG — long-time, short-time, instantaneous and earth fault |
| Overload protection adjustment | 128–320 A |
| Short-time delayed short-circuit adjustment | 192–3,200 A |
| Instantaneous short-circuit adjustment | 480–3,840 A |
| Rated operational voltage | 690 V AC |
| Ultimate breaking capacity (Icu) at 400 V AC | 120 kA |
| Mounting type | Fixed |
| Terminal type | Front terminals |
| Main circuit connection | Bolted connection |
| Degree of protection | IP20 |
| Electrical durability | 7,000 cycles |
| Mechanical durability | 20,000 cycles |
| Dimensions (H × W × D) | 205 × 186 × 103.5 mm |
| Weight | approx. 6.2 kg |
| EAN | 8015644554767 |
Frequently Asked Questions
What is the ABB 1SDA054378R1 used for?
The ABB 1SDA054378R1 is a 320 A four-pole electronic moulded case circuit breaker designed to protect low-voltage electrical distribution systems against overload, short-circuit and earth-fault conditions.
What is the current rating of the ABB T5L400 1SDA054378R1?
The breaker uses the ABB SACE Tmax T5L 400 frame with a 320 A rated PR222DS/P-LSIG electronic trip unit.
What protection does the PR222DS/P-LSIG trip unit provide?
The PR222DS/P-LSIG provides LSIG protection comprising long-time overload, short-time delayed short-circuit, instantaneous short-circuit and earth-fault protection.
What are the protection adjustment ranges of the ABB 1SDA054378R1?
The electronic release provides an overload adjustment range of 128–320 A, a short-time delayed short-circuit range of 192–3,200 A and an instantaneous short-circuit range of 480–3,840 A.
How is the ABB 1SDA054378R1 installed?
The 1SDA054378R1 is a fixed four-pole circuit breaker with front terminals, designed for integration into low-voltage switchboards and electrical distribution panels.
Trusted Protection from ABB
ABB SACE Tmax moulded case circuit breakers combine high interruption performance with flexible electronic protection, providing dependable circuit protection, earth-fault protection and coordination for demanding industrial and commercial low-voltage distribution systems.
