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1SDA074534R1 ABB PR331/P-LSIG T7-T7M-X1 Electronic Trip Unit
ABB PR331/P-LSIG T7-T7M-X1 electronic trip unit with LSIG protection functions designed for ABB Tmax T7, T7M and X1 circuit breakers.
£2,623.79
Why Choose the ABB PR331/P-LSIG T7-T7M-X1 Electronic Trip Unit?
The ABB PR331/P-LSIG T7-T7M-X1 new (1SDA074534R1) is a high-performance electronic trip unit accessory designed for ABB SACE Tmax T7, T7M and X1 moulded case and air circuit breaker platforms. It provides advanced protection functionality with adjustable long-time, short-time, instantaneous and ground-fault protection for reliable operation in demanding low-voltage electrical distribution systems.
As part of the ABB Tmax T4–T8 accessory range, the PR331/P-LSIG trip unit enables accurate protection coordination and improved system reliability. Its electronic design allows engineers to configure protection settings according to installation requirements, helping optimise selectivity and equipment protection.
The PR331/P-LSIG release is suitable for ABB T7, T7M and X1 breaker applications where dependable overcurrent protection and advanced trip management are required in industrial and commercial power distribution systems.
Key Advantages
- Advanced electronic protection release for ABB Tmax T7, T7M and X1 circuit breakers.
- LSIG protection functions provide comprehensive overload, short-circuit and earth fault protection.
- Adjustable protection parameters support accurate system coordination.
- Improves electrical safety and operational reliability in low-voltage installations.
- Designed for straightforward integration with ABB Tmax breaker platforms.
- Manufactured to ABB quality standards for industrial power protection applications.
Key Features
- ABB SACE Tmax electronic trip unit.
- Model: PR331/P-LSIG T7-T7M-X1 new.
- Order code: 1SDA074534R1.
- Protection functions: Long-time, short-time, instantaneous and ground fault (LSIG).
- Suitable for ABB Tmax T7, T7M and X1 circuit breakers.
- Electronic microprocessor-based protection technology.
- Adjustable trip settings for application-specific protection requirements.
- Supports selective coordination within low-voltage distribution networks.
Reliable Protection Control for Industrial Power Systems
Electronic trip units are a critical component of modern circuit breakers, providing accurate monitoring and rapid response to abnormal electrical conditions. The ABB PR331/P-LSIG release improves protection performance by allowing engineers to configure trip characteristics for specific distribution requirements.
Designed for ABB Tmax T7, T7M and X1 circuit breakers, this trip unit supports reliable protection coordination across industrial, commercial and infrastructure electrical systems.
Typical Applications
- Industrial low-voltage switchboards.
- Main distribution boards.
- Manufacturing and process plant electrical systems.
- Commercial building power distribution.
- Energy infrastructure installations.
- ABB Tmax T7, T7M and X1 circuit breaker applications.
Technical Specifications
| Product series | SACE Tmax T Accessories |
|---|---|
| Order code | 1SDA074534R1 |
| Product type | Electronic trip unit |
| Compatible breakers | ABB Tmax T7, T7M and X1 |
| Protection functions | LSIG |
| Protection | Overload, short circuit and earth fault protection |
| Trip technology | Electronic microprocessor-based release |
| Product category | Circuit breaker trip unit accessories |
| Standards | IEC compatible ABB Tmax protection system |
Frequently Asked Questions
What is the ABB PR331/P-LSIG T7-T7M-X1 used for?
This electronic trip unit provides adjustable LSIG protection functions for compatible ABB Tmax circuit breakers.
Which circuit breakers are compatible with this trip unit?
The PR331/P-LSIG is designed for ABB Tmax T7, T7M and X1 circuit breaker platforms.
What protection functions are included?
The trip unit provides LSIG protection, including long-time, short-time, instantaneous and ground-fault protection.
What is the ABB order code for this trip unit?
The ABB order code is 1SDA074534R1.
Where is this electronic trip unit typically installed?
The trip unit is installed within compatible ABB Tmax circuit breakers used in industrial and commercial low-voltage distribution systems.
Trusted by Industrial Power Engineers Worldwide
ABB electronic trip units provide accurate protection, improved selectivity and dependable circuit breaker performance for modern low-voltage electrical distribution systems.
