Introduction
Industrial control relay contacts are engineered for heavy-duty switching, motor starters, and automation systems. They deliver high conductivity, exceptional arc resistance, and reliable circuit interruption under demanding industrial electrical loads.
Technical Specifications & Material Composition
|
Parameter / Feature |
Technical Specification |
|
Base Material Options |
Fine Silver (Ag), Silver-Nickel (AgNi), Silver-Tin Oxide (AgSnO2), Silver-Cadmium Oxide (AgCdO), Copper (Cu) |
|
Contact Forms |
Form A (SPST-NO), Form B (SPST-NC), Form C (SPDT), Custom Bifurcated |
|
Rated Operational Voltage |
24V DC to 600V AC |
|
Current Carrying Capacity |
5A to 150A (Depending on material configuration) |
|
Electrical Endurance |
>= 100,000 operations at rated load |
|
Mechanical Endurance |
>= 10,000,000 operations |
|
Hardness (HV) |
80 HV - 130 HV (Material-specific) |
|
Manufacturing Process |
Cold heading, progressive die stamping, automatic welding/brazing |
Applications
Industrial Automation: PLC interface relays, limit switches, and control panels.
Motor Control Centers (MCC): Heavy-duty contactors, starters, and thermal overload relays.
Power Distribution: Switchgear, circuit breakers, and auxiliary control circuits.
Automotive & Rail Transit: High-current DC switching relays and signaling equipment.
OEM/ODM & Custom Engineering Services1
In-house progressive die design and manufacturing.
Custom alloy formulations to meet specific electrical wear characteristics.
Rapid sample production (within 7-10 business days) utilizing precise CAD/CAM modeling.
Packaging & Logistics
Oxidation-Proof: DI-water washed, IR-dried, and nitrogen-purged vacuum packaging in double-wall export cartons.
Global Freight: Express air via DHL/FedEx/UPS (3–5 days); palletized ocean/air freight for bulk orders with customs support.
Lead Times:
• Standard: 5–10 business days.
• New Tooling: 20–30 business days (includes sample validation).
After-Sales & Technical Service
Engineering Support: Direct access to metallurgical and electrical engineers for troubleshooting or wear optimization.
12-Month Warranty: Backed by a 12-month operational guarantee with immediate replacement or credit for verified defects.
Inventory Buffering: Localized safety stock and warehouse buffering for blanket orders to enable 24-hour dispatch.
Frequently Asked Questions
Q: What material is best recommended for high-inrush current inductive loads?
A: We highly recommend Silver-Tin Oxide (AgSnO2). It features superior thermal stability, excellent anti-welding properties, and out-performs Silver-Cadmium Oxide (AgCdO) in AC inductive loads while being fully RoHS compliant.
Q: Can you provide full material traceability reports with shipments?
A: Yes. Every batch is shipped with a Material Test Report (MTR), Mill Test Certificate (MTC), and RoHS/REACH compliance statement tracking chemical composition and hardness.
Q: How do you prevent contact oxidation during long-term storage?
A: All contacts undergo an anti-tarnish surface treatment and are packed in nitrogen-flushed, vacuum-sealed plastic barriers to guarantee a shelf-life of up to 24 months in standard warehouse conditions.
Q: What is your Minimum Order Quantity (MOQ) for custom-dimension relay contacts?
A: Our standard MOQ for custom geometries or specialized alloys is typically 10,000 pieces, depending on the material volume and tooling requirements.
Q: Do you support PPAP (Production Part Approval Process) for automotive or aerospace clients?
A: Yes, we routinely provide PPAP Level 3 documentation, including FMEA, Control Plans, and dimensional layout reports for tier-1 industrial and automotive buyers.
Q: How do you handle dimensional quality inspection for micro-sized contacts?
A: We utilize automated 2.5D/3D optical measuring systems and automated vision-sorting machines to inspect 100% of critical dimensions down to a tolerance of +/- 0.01 mm.
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