Electromechanical and Power Relays Tianbo Relay / Ningbo Tianbo Ganglian Electronics

Tianbo Relay electromechanical relays by Ningbo Tianbo Ganglian Electronics: signal, power, automotive, and high-current inverter relay units selected by part number.

Ningbo Tianbo Ganglian Electronics plant and Tianbo Relay manufacturing

Ningbo Tianbo Ganglian Electronics Co., Ltd. (brand Tianbo Relay) was established in 1989, producing over 25 million electromechanical relays monthly. Facilities include 50,000 square meters of clean workshops with automated assembly lines, testing benches, and reliability evaluation labs.

Manufacturing facility of 50,000 m² in Ningbo with 25 million monthly output
Provincial high-tech enterprise engineering research and development center
Electrical dielectric strength evaluation and heavy contact load test systems
Quality management processes compliant with IATF 16949 and ISO 9001 standards

Tianbo Relay telecom and signal relays series HJR4102 and TR5V

Subminiature signal relays by Ningbo Tianbo Ganglian Electronics (Tianbo Relay) series HJR4102, HJR4102E, TR5V, and HJR1-2C are engineered for PCB mounting in telecommunications and control modules. The architecture provides low coil power requirement and full compatibility with IC drivers.

Surge dielectric breakdown strength reaching 1500V pursuant to FCC68 specs
Nominal DC coil control voltage selections covering 3VDC through 24VDC levels
Standard DIP pin arrangement tailored for high-density printed circuit boards
Sealed plastic enclosure options suitable for automated wave soldering steps

Tianbo Relay subminiature PCB power relays series HJR-3FF and HJR-21FF

Compact PCB power relays by Ningbo Tianbo Ganglian Electronics (Tianbo Relay) series HJR-3FF, HJR-21FF, TRA6H, and TRG1 provide 10A to 16A switching capacity for control units, power supplies, and automation modules. Devices feature high dielectric resistance and sealed construction.

Contact switching ratings from 10A up to 16A at 250VAC nominal operational load
Surge insulation resistance between coil and contacts up to 6kV on HJR-21FD
Subminiature form factor with standard 1 Form A, 1 Form B, and 1 Form C sets
Plastic sealed and flux-proof enclosures resisting dust ingress and moisture

Tianbo Relay heavy-duty industrial power relays series HJQ-15FW and HJQ-22F

Heavy-duty relays by Ningbo Tianbo Ganglian Electronics (Tianbo Relay) series HJQ-15FW, HJQ-22F, HJQ-13F, and TRCD handle switching loads from 20A to 50A across heating units, compressors, machine tools, and charging posts. Internal contact layouts offer fast electric arc dissipation.

Heavy contact switching capacity up to 50A rating at 250VAC operational load
Multiple contact gap dimensions optimized for inductive loop interruption
Reinforced insulation structure handling severe transient surges and spikes
Flanged and PCB terminal variants for direct soldering or quick-connect tabs

Tianbo Relay high-current solar inverter relays series TRNA-200 and TRNA-270

Specialized high-capacity relays by Ningbo Tianbo Ganglian Electronics (Tianbo Relay) series TRNA-200, TRNA-270, and TRNA-270A are designed for photovoltaic solar inverters, storage systems, and power converters. Units handle 200A to 270A heavy currents with a 4 mm contact gap.

Ultra-high switching capacity spanning 200A to 270A inside inverter loops
Expanded contact gap of 4 mm compliant with photovoltaic safety directives
Minimal contact resistance preventing overheating during continuous currents
High endurance against repetitive inrush current surges in energy systems

Tianbo Relay automotive electromagnetic relays series TRV4, TRV3, and TRF

Automotive relays by Ningbo Tianbo Ganglian Electronics (Tianbo Relay) series TRV3, TRV4, TRV4-1U, TRF, TRFM, and TRAW are built for 12V/24V DC automotive wiring on commercial vehicles and equipment. Units withstand continuous 40A load at +85°C ambient temperature.

Continuous operational rating up to 40A at elevated +85°C ambient thermal level
Inrush current endurance reaching 100A for headlamp and DC motor startups
Plug-in blade terminals for quick sockets and PCB pins for board mounting
Dust-protected and plastic sealed enclosure options for under-hood wiring

Tianbo Relay polarized magnetic latching relays series TRL

Bistable magnetic latching relays by Ningbo Tianbo Ganglian Electronics (Tianbo Relay) series TRL1, TRL2, TRL3, and TRL4 retain contact status without ongoing coil power. Engineered according to DIN IEC 255 and IEC62055-31 criteria for smart energy meters and automated grid monitoring.

Heavy switching capacity reaching 90A pursuant to IEC62055-31 test procedures
Zero power consumption during steady closed or open operational states
Single-coil and dual-coil configurations responding to pulse actuation inputs
Dielectric insulation strength between coil and contacts rated at 4kV

Tianbo Relay sockets, mounting bases, and electrical accessories

For Ningbo Tianbo Ganglian Electronics (Tianbo Relay) series TRV, HJQ, and HJR, mounting sockets for DIN rails, wiring sockets, retaining clips, and diode suppressors are supplied. These units permit rapid relay swap in electrical control cabinets without rewiring conductors.

Screw and spring cage terminals clamping stranded wires up to 4 mm² gauge
Identification label tabs and spring retaining clips for high-vibration spots
Integrated flyback surge suppression modules with status indicator LEDs
Compliance with industrial DIN rail standard dimensions in control cabinets

Insulation coordination and dielectric strength calculations for Tianbo Relay devices

When designing industrial automation equipment with Ningbo Tianbo Ganglian Electronics (Tianbo Relay) components, insulation coordination between control coils and output contact pairs represents a key electrical reliability criterion.

Signal series HJR4102 and TR5V are built compliant with FCC68 specifications, enduring transient impulse surges up to 1500V without dielectric breakdown.

Heavy-duty power relays HJQ-15FW and HJR-21FD withstand 6kV impulse surge testing alongside 4kV alternating current dielectric resistance over 60 seconds.

Printed circuit board designers allocate creepage distances and air clearances of at least 3.2 mm to secure dependable performance under relative humidity up to 85%.

Switching load capacity selection for HJQ and TRNA series during inductive operations

Actuating inductive circuits, cooling compressors, and solar inverters using Ningbo Tianbo Ganglian Electronics (Tianbo Relay) units requires calculating inrush current spikes and contact arc dissipation dynamics.

For resistive AC-1 circuits, contact pairs in HJQ-15FW and TRCD handle up to 50A continuous load at 250VAC, whereas inductive motor loops (AC-3 ratings) require reducing operational currents by 30 to 40 percent to prevent contact surface degradation.

High-current TRNA series relays employ silver tin oxide AgSnO2 contact materials with an enlarged 4 mm gap, ensuring safe interruption of direct currents up to 270A without contact tack welding during emergency shutdowns.

Microprocessor control integration for subminiature HJR4102 and TR5V signal relays

Subminiature relays by Ningbo Tianbo Ganglian Electronics (Tianbo Relay) series HJR4102 and TR5V match microcontroller ports and open-collector transistor drivers.

High-sensitivity coils consuming 150 to 200 mW draw less than 17 mA under 12VDC excitation, enabling direct connection to standard industrial control drivers without supplementary amplification stages.

Circuit diagrams mandate placing a fast flyback diode across coil terminals in reverse polarity to suppress voltage transients produced when the magnetic field collapses. For critical instrumentation circuits, dedicated ground plane layouts shield signal traces from coil electromagnetic noise.

Thermal management and vibration endurance of TRV and TRF automotive relays

Automotive electromechanical relays by Ningbo Tianbo Ganglian Electronics (Tianbo Relay) series TRV3, TRV4, TRF, and TRAW are manufactured for harsh operating conditions in commercial vehicles and heavy machinery.

Ambient temperatures under the vehicle hood reach +85°C, while internal coil winding heat and contact resistance can elevate internal temperatures by 40°C.

Utilizing Class F polymer insulation (+155°C) and AgSnO2 alloys ensures contact contact pressure retention and eliminates contact chatter under mechanical vibrations reaching 10g across 10 to 500 Hz frequencies.

Pulse excitation and bistable switching mechanics of TRL magnetic latching relays

Polarized relays by Ningbo Tianbo Ganglian Electronics (Tianbo Relay) series TRL1, TRL2, and TRL4 incorporate an internal permanent magnet holding contacts in position without continuous coil excitation.

Contact switching is achieved by applying a brief 50 to 100 ms voltage pulse to the designated coil in dual-coil layouts or a reverse-polarity pulse in single-coil configurations.

This operational principle reduces electrical standby power to zero during static operation, eliminating thermal buildup in metering equipment and energy monitoring systems pursuant to IEC62055-31 standards.

Printed circuit board mounting, wave soldering, and socket maintenance guidelines

Mounting relays by Ningbo Tianbo Ganglian Electronics (Tianbo Relay) onto printed circuit boards involves manual soldering or automated wave soldering equipment.

For flux-proof and dust-protected units, soldering iron temperatures must remain below +260°C with dwell intervals limited to 5 seconds to avoid mechanical distortion of the plastic base. Sealed plastic models accommodate solvent wash cycles without cleaning liquid penetrating the contact chamber.

When employing DIN rail sockets for HJQ and TRV models, maintenance schedules recommend checking terminal screw tightening torque of 0.5 to 0.8 Nm every 12 months.

What we do not claim

Tianbo Relay / Ningbo Tianbo Ganglian Electronics and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Tianbo Relay / Ningbo Tianbo Ganglian Electronics and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.