Product Overview
Based on ATST Electric’s core concept of “Precise Control, Safe and Reliable”, GKRC-03/GKRC-03F/GKRC-M2 Over and Under Voltage Protection Relays provide a reliable solution for voltage monitoring and electrical equipment protection.
The relay continuously measures the power supply voltage and detects abnormal conditions including excessive voltage and insufficient voltage. When the voltage exceeds or falls below the preset protection range, the device activates the protection function to disconnect the load or control the circuit, helping prevent equipment failure caused by unstable power supply.
Compared with traditional protection components, GKRC series relays provide more flexible installation and reliable automatic protection functions. Their compact modular structure makes them suitable for integration into distribution boards, control cabinets and electrical protection systems.
GKRC-03/GKRC-03F/GKRC-M2 are widely used in low-voltage distribution, industrial automation, motor control and building electrical systems where voltage stability is essential.
Main Features
1. Over-voltage protection: Detects excessive voltage levels and protects connected equipment from damage caused by voltage surges.
2. Under-voltage protection: Monitors insufficient voltage conditions and prevents equipment from operating under unsafe voltage levels.
3. Automatic voltage monitoring: Continuously supervises power supply conditions and provides protection when abnormal voltage occurs.
4. Reliable protection response: Quickly reacts to voltage abnormalities to improve equipment safety and system reliability.
5. Adjustable protection parameters: Allows users to configure protection values according to different electrical application requirements.
6. Stable relay output: Provides reliable switching control for load protection circuits.
7. Compact modular structure: Designed for convenient installation in distribution boxes, electrical panels and control cabinets.
8. Wide application compatibility: Suitable for household, commercial and industrial low-voltage electrical systems.
Application Scenarios
1. Residential electrical protection: Used in home distribution boxes to protect appliances from unstable voltage and sudden voltage changes.
2. Commercial building systems: Suitable for offices, shopping malls, hotels and public facilities requiring reliable voltage protection.
3. Industrial equipment protection: Applied to motors, machines and automation equipment sensitive to voltage fluctuations.
4. Pump and motor systems: Helps protect water pumps, fans, compressors and other electrical equipment from abnormal voltage conditions.
5. Electrical distribution systems: Installed in low-voltage distribution cabinets and control panels to improve power supply safety.
6. HVAC systems: Suitable for air conditioners, ventilation equipment and cooling systems requiring stable voltage operation.
7. Industrial automation systems: Used in control cabinets and production equipment to enhance electrical protection and operational reliability.
Technical Date
| Supply voltage (Un) | 220, 230VAC |
| Power consumption | 30VA /2W (50Hz.) |
| Supply frequency | 48~63Hz(GKRC-03/GKRC-03F) 50/60Hz(GKRC-M2) |
| Operating Temperature | -5°C~+55°C |
| Output Type | 1 inverter, 8A, 250V, 2000VA (Cosφ=1) |
| Over voltage setup(Umax) | 240~300VAC(GKRC-03/GKRC-03F) 410~510VAC(GKRC-M2) |
| Under voltage setup(Umax) | 150~210VAC(GKRC-03/GKRC-03F) 270~370VAC(GKRC-M2) |
| Hysteresis(for Umax and Umin) | Un x 3%(constant) |
| Delay-Off(Delay) | 0.1~20sec(0.1~60sn. and 0.1~180sn.Manufactured if demanded) |
| Delay-On(Reset Delay) | 0.1~20sec(0.1~60sn. and 0.1~180sn.Manufactured if demanded) |
Wiring Diagram
Dimensions
