Product Overview
Based on ATST Electric’s core concept of “Precise Control, Safe and Reliable”, MKC-01/MKC-03/MKC-04 Phase Failure & Protection Relays provide reliable protection solutions for three-phase electrical systems.
The relay continuously monitors the condition of the three-phase power supply and detects abnormal conditions such as phase loss, phase imbalance and incorrect power sequence. When an electrical fault occurs, the device outputs a protection signal to control the connected equipment, helping reduce the risk of motor damage, reverse rotation and unexpected shutdown.
Designed for industrial electrical applications, MKC series relays feature reliable monitoring performance, compact structure and convenient installation. They can be easily integrated into motor control panels, distribution cabinets and automation systems to improve equipment safety and operational stability.
Main Features
1. Phase failure protection: Detects missing phase conditions in three-phase power systems and protects equipment from damage caused by phase loss.
2. Phase sequence monitoring: Identifies incorrect phase rotation to prevent reverse operation of motors and rotating equipment.
3. Three-phase power supervision: Continuously monitors electrical conditions to improve system reliability and safety.
4. Fast fault response: Provides timely protection signals when abnormal power conditions occur.
5. Reliable relay output: Ensures stable switching performance for equipment protection and control circuits.
6. Compact modular design: Suitable for installation in electrical cabinets, control panels and automation systems.
7. Easy installation and maintenance: Clear terminal layout allows convenient wiring and commissioning.
8. Industrial-grade reliability: Designed for long-term operation in industrial and commercial electrical environments.
Application Scenarios
1. Motor protection systems: Used for three-phase motors to prevent damage caused by phase failure, incorrect phase sequence or unstable power supply.
2. Pump control systems: Suitable for water pumps, circulation pumps, drainage pumps and industrial pumping equipment.
3. Compressor systems: Applied in air compressors and refrigeration equipment to protect motors from abnormal three-phase conditions.
4. Industrial automation equipment: Used in production lines, machine tools and automated machinery requiring reliable power monitoring.
5. HVAC systems: Suitable for fans, cooling equipment and air conditioning systems with three-phase motors.
6. Electrical control cabinets: Installed in motor control centers, distribution panels and automation cabinets for equipment protection.
7. Building and infrastructure facilities: Applied in elevators, ventilation systems and other three-phase electrical equipment requiring reliable protection.
Technical Date
| Rated voltage (Un) | 220/230VAC, 220/380VAC(MKC-04) |
| Output contacts | 1 C/O, 8A, 250VAC, 2000VA, Cosp=1 |
| Operating range | (0.8-1.2) x Un, (0.9-1.1) x Un(MKC-04) |
| Rated frequency | 50/60Hz |
| Tripping time | 0.2sec |
| Ambiant temperature | -5~+55°C |
Wiring Diagram
Dimensions
