Product Introduction
The ABB PR122/P-LSIG E1-E6 1SDA058198R1 Overcurrent Release is a precision-engineered electromechanical protection module designed to safeguard circuit breakers and switchgear against overcurrent conditions. Its primary function is to detect current levels exceeding predefined thresholds and trigger disconnection to prevent equipment damage and ensure operational safety.
This release integrates advanced thermal and electromagnetic mechanisms to provide fast and reliable tripping. It is suitable for use in low- and medium-voltage applications, industrial plants, and process automation systems. Engineered for robust performance, the module ensures repeatable operation under high-stress conditions while maintaining electrical isolation and mechanical durability.
Product Specifications
| Parameter |
Specification |
| Model |
ABB PR122/P-LSIG E1-E6 |
| Order Number |
1SDA058198R1 |
| Product Type |
Overcurrent Release |
| Function |
Trip activation for overcurrent protection |
| Current Rating |
Configurable according to LSIG curves |
| Tripping Mechanism |
Electromechanical, LSIG adjustable |
| Operating Principle |
Instantaneous and delayed tripping based on load |
| Environmental Rating |
Industrial operational temperature range |
| Mounting |
Direct attachment to circuit breaker frame |
| Mechanical Durability |
High-reliability design for repeated operation |
| Electrical Isolation |
Ensures safe separation from control circuitry |
| Dimensions |
155 × 95 × 70 mm |
| Weight |
1 kg |
Applications
• Low- and Medium-Voltage Circuit Protection
Safeguards distribution boards and switchgear against overcurrent faults.
• Industrial Plant Electrical Safety
Provides reliable overcurrent tripping in manufacturing and process facilities.
• Automation System Integration
Ensures protective isolation for sensitive automation components.
• Switchgear Retrofit and Upgrades
Can be applied to upgrade existing switchgear protection systems.
• Power Distribution Networks
Used to protect feeders, busbars, and sub-circuits from overload conditions.
• Emergency Load Isolation
Allows controlled disconnection to prevent cascading failures in the electrical network.
Advantages
• Fast and Reliable Tripping
Instantaneous and time-delayed tripping ensures precise protection under overcurrent conditions.
• Adjustable LSIG Characteristics
Supports load-dependent tripping settings, providing flexibility for diverse applications.
• Mechanical and Electrical Robustness
Engineered to withstand repeated operations and maintain isolation integrity.
• Compact Form Factor
Small footprint allows integration into tight switchgear spaces.
• Improved Safety and Maintenance
Reduces risk of equipment damage and facilitates predictable operation during faults.
• Compatibility with ABB Systems
FAQ
1. How does the overcurrent release operate?
It detects excessive current levels and triggers mechanical tripping to disconnect the circuit.
2. What types of tripping curves are supported?
The release supports LSIG (Long-time, Short-time, Instantaneous, Ground fault) adjustable characteristics.
3. Can this module handle repeated fault operations?
Yes, it is designed for high mechanical durability and repeated activation cycles.
4. How is the release mounted on the circuit breaker?
It attaches directly to the breaker frame, ensuring proper alignment for reliable tripping.
5. Does the device provide electrical isolation?
Yes, it maintains safe separation from control circuits while activating the breaker.
6. Is the overcurrent protection configurable?
Yes, tripping thresholds and time delays can be adjusted according to system requirements.
7. Can it be used in both low- and medium-voltage systems?
Yes, it is suitable for industrial distribution systems across these voltage ranges.
8. How does the module improve system safety?
It prevents overload and short-circuit damage by disconnecting the faulty circuit quickly and reliably.
9. Is additional monitoring required for operation?
Standard applications do not require external monitoring; internal mechanisms handle detection and tripping.
10. Can this release be integrated into existing switchgear?
Yes, it is compatible with ABB PR series breakers for retrofit or upgrade purposes.
Related Models
| Model |
Description |
| ABB PR122/P-LSIG E1-E4 |
Overcurrent release with lower LSIG range |
| ABB PR122/P-LSIG E1-E8 |
Extended LSIG adjustable release for high-capacity circuits |
| ABB PR122/P-ISG |
Instantaneous and short-time overcurrent release |
| ABB PR122/P-L |
Long-time overcurrent trip module for standard protection |
| ABB PR122/P-S |
Short-time overcurrent release for sensitive circuits |
| ABB PR122/P-G |
Ground fault detection and overcurrent release module |
Popular Models
| Model |
Description |
| ABB PR123 |
Main breaker with adjustable LSIG protection |
| ABB PR125 |
Compact circuit breaker for industrial applications |
| ABB S800 I/O System |
Distributed I/O platform for automation |
| ABB AC500 PLC Series |
Modular programmable logic controller family |
| ABB ACS880 Drives |
Industrial variable frequency drive platform |
| ABB PM800 Relay Protection |
Protection relay series for power systems |
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