ABB SPAJ140C Product Detailed Description
Product Overview
ABB SPAJ140C is a powerful combined overcurrent and ground fault relay, mainly used for the protection of distribution systems. It provides selective short-circuit protection and ground fault protection for radial feeders in directly grounded, resistance-grounded or impedance-grounded power systems.

Main Features
Combined protection: Integrates overcurrent protection and ground fault protection in one device with a compact structure.
Selective protection: It can achieve selective protection of radial feeders to avoid excessive power outage range in case of faults.
Applicable to a variety of grounding systems: Applicable to directly grounded, resistance-grounded or impedance-grounded power systems.
Rich functions: It has a variety of protection functions, such as overcurrent protection, ground fault protection, and voltage loss protection.
Flexible configuration: By setting parameters, it can adapt to different application environments.

Application scenarios
Distribution system: Used to protect distribution lines, transformers and other equipment.
Industrial enterprises: Used to protect the internal distribution system of the factory.
Public facilities: Used to protect the distribution system of public facilities such as hospitals and schools.
Technical parameters (typical)
Rated voltage: Depending on the model, it can support multiple voltage levels.
Rated current: Depending on the model, it can support multiple current levels.
Protection function: Overcurrent protection, ground fault protection, undervoltage protection, etc.
Communication interface: Supports multiple communication protocols to facilitate communication with the host computer.