• Product
  • Suppliers
  • Manufacturers
  • Solutions
  • Free tools
  • Knowledges
  • Experts
  • Communities
Search


GRP8-01 Thermistor Motor Protection Relay

  • GRP8-01 Thermistor Motor Protection Relay
  • GRP8-01 Thermistor Motor Protection Relay
  • GRP8-01 Thermistor Motor Protection Relay

Key attributes

Brand MV Switchgear Accessories
Model NO. GRP8-01 Thermistor Motor Protection Relay
Rated frequency 50/60Hz
Series GRP8

Product descriptions from the supplier

Description

Product Highlight

Precise Temperature Control: With an alarm setpoint of 3100Ω ±10% and a return setpoint of 1650Ω ±10%, it keeps your motor operating within safe temperature limits.

Broken Wire Detection: Instantly alerts you to any sensor circuit interruptions, preventing motor damage due to undetected faults.

Flexible Installation: DIN rail mounting (EN/IEC 60715) offers quick and easy setup in any environment.

Wide Voltage Compatibility: Supports AC/DC 24-240V 50/60Hz, making it adaptable to various power systems.

Exceptional Durability: Boasts a mechanical life of 1×10⁷ cycles and an electrical life (AC1) of 1×10⁵ cycles for long-term reliability.

The GRP8-01 Thermistor Motor Protection Relay from GEYA is a high-performance solution designed to safeguard your motors from damage. Utilizing advanced thermistor technology, it provides real-time temperature monitoring to prevent thermal overload caused by high switching frequency, heavy-duty starting, phase failure, poor cooling, or high ambient temperatures. Whether in industrial automation lines or mechanical manufacturing workshops, the GRP8-01 ensures reliable motor protection.

Voltage range: AC/DC 24-240V 50/60Hz

Burden: AC 0.09-3VA/DC 0.05-1.7W

Supply voltage tolerance:-15%;+10%

Max cold PTC resistance:1500Ω

Know your supplier
Online store
On-time delivery rate
Response time
100.0%
≤4h
Company overview
Workplace: 1000m² Total staff: Highest Annual Export(usD): 300000000
Workplace: 1000m²
Total staff:
Highest Annual Export(usD): 300000000
Services
Business Type: Sales
Main Categories: High Voltage Electrical Apparatus/Low Voltage Electrical Apparatus/Instrument meters/Tester/Production equipment/Electrical fittings/Equipment Parts
Whole life care manager
Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.
The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.

Related Products

Related Knowledges

  • Main Components of a Transformer – Operating Principle, Faults, and Phenomena of the Gas Relay
    Gas accumulation: Free gas is present in the transformer oil. Response: The gas in the liquid rises and accumulates in the Buchholz relay, compressing the transformer oil. As the liquid level drops, the float also descends. The movement of the float drives a switch element (magnetic contact), thereby triggering an alarm signal. However, the float is not affected, because a certain amount of gas can flow through the pipe into the storage chamber.Fault: Due to leakage causing loss of transformer o
    11/27/2025
  • Relay Protection Types in Substations: A Complete Guide
    (1) Generator Protection:Generator protection covers: phase-to-phase short circuits in stator windings, stator ground faults, inter-turn short circuits in stator windings, external short circuits, symmetrical overload, stator overvoltage, single- and double-point grounding in the excitation circuit, and loss of excitation. Tripping actions include shutdown, islanding, limiting fault impact, and alarm signaling.(2) Transformer Protection:Power transformer protection includes: phase-to-phase short
    11/05/2025
  • Sealing Structure for Oil-Filled SF6 Gas Density Relay Contact Lead Wires
    I. CLAIMS A sealing structure for lead wires of contacts in an oil-filled SF6 gas density relay, characterized by comprising a relay housing (1) and a terminal base (2); the terminal base (2) comprising a terminal base housing (3), a terminal base seat (4), and conductive pins (5); the terminal base seat (4) being disposed inside the terminal base housing (3), the terminal base housing (3) being welded onto the surface of the relay housing (1); a central through-hole (6) being provided at the ce
    10/27/2025
  • SF6 Density Relay Oil Leakage: Causes, Risks & Oil-Free Solutions
    1. Introduction SF6 electrical equipment, renowned for its excellent arc-quenching and insulating properties, has been widely applied in power systems. To ensure safe operation, real-time monitoring of SF6 gas density is essential. Currently, mechanical pointer-type density relays are commonly used, providing functions such as alarm, lockout, and on-site display. To enhance vibration resistance, most of these relays are filled internally with silicone oil.However, oil leakage from density relays
    10/27/2025
  • ZDM Oil-Free SF6 Density Relay: The Permanent Solution to Oil Leakage
    The 110kV substation at our plant was constructed and put into operation in February 2005. The 110kV system employs ZF4-126\1250-31.5 type SF6 GIS (Gas-Insulated Switchgear) from Beijing Switchgear Factory, comprising seven bays and 29 SF6 gas compartments, including five circuit breaker compartments. Each circuit breaker compartment is equipped with an SF6 gas density relay. Our plant uses the MTK-1 model oil-filled density relays manufactured by Shanghai Xinyuan Instrument Factory. These relay
    10/27/2025
  • On-Site Testing of SF6 Gas Density Relays: Relevant Issues
    IntroductionSF6 gas is widely used as an insulating and arc-quenching medium in high-voltage and extra-high-voltage electrical equipment due to its excellent insulation, arc-extinguishing properties, and chemical stability. The insulation strength and arc-quenching capability of electrical equipment depend on the density of SF6 gas. A decrease in SF6 gas density can lead to two main hazards: Reduced dielectric strength of the equipment; Decreased interrupting capacity of circuit breakers.Additio
    10/27/2025
Haven't found the right supplier yet? Let matching verified suppliers find you. Get Quotation Now
Haven't found the right supplier yet? Let matching verified suppliers find you.
Get Quotation Now
Send inquiry
+86
Click to upload file
Download
Get the IEE Business Application
Use the IEE-Business app to find equipment, obtain solutions, connect with experts, and participate in industry collaboration anytime, anywhere—fully supporting the development of your power projects and business.