The W12T-50 new energy relay has been engineered to endure the rigours of challenging application environments.The device demonstrates a high-current switching capacity of 50A and boasts a high isolation rating of 4000V. Its Class F insulation rating, RoHS environmental compliance, and excellent mechanical and electrical durability make it ideal for power management and circuit switching in electric vehicle charging stations, photovoltaic inverters, energy storage systems, and other industrial control equipment.
50A Contact Current: Meets mainstream EV charging station and PV system demands by smoothly switching high-current loads.
High Switching Capacity: 13,850VA switching capacity ensures stable operation at 277VAC.
AgSnO₂ (Silver Tin Oxide) Contact Material: Improves electrical longevity by resisting arc erosion and contact stability.
High Dielectric Withstand Voltage: The improved insulating strength of up to 4000VAC between the coil and contacts effectively mitigates high-voltage interference, while preserving the integrity of the control system.
UL Class F insulation system: Permits long-term coil operation at temperatures up to 155°C, delivering greater thermal safety margin.
Dual protective structures: Offers both Flux Proofed and Plastic Sealed configurations. The latter effectively resists harmful gases (H₂S, SO₂, NO₂) and dust, adapting to harsh industrial environments.
Extended mechanical life: Up to 5 million operations, reducing maintenance and replacement frequency.
High electrical endurance: At room temperature, it sustains 10,000 to 30,000 electrical endurance cycles, even under high currents of 40A to 60A.
Robust mechanical construction: As demonstrated in the relevant literature, the material exhibits an electrical endurance capacity ranging from 10,000 to 30,000 cycles at room temperature, even when subjected to high currents of 40A-60A.
The product is available in two series: standard and sensitive (low-power). The rated power coverage of the former is 1.2W, while that of the latter is 0.9W.
The device accommodates a wide coil voltage range, from DC 5V to DC 110V. This makes it possible to connect directly to a wide range of control circuits, including low-voltage programmable logic controllers (PLCs) and high-voltage direct current (DC) power supplies.
Contact Type: 1A (Normally Open, SPST-NO) or 1C (Changeover, SPDT)
Initial Contact Resistance: ≤ 50mΩ (Low loss, minimized heat generation)
Minimum Allowable Load: 5VDC / 100mA (Capable of switching high power while reliably controlling small signals)
Actuation/Release Time: ≤20ms / ≤10ms (Rapid response for precise timing control)
Operating Temperature Range: -40°C to +85°C, suitable for environments from frigid climates to high-temperature engine compartments.
Humidity Range: 5% - 90% RH, adaptable to diverse climatic conditions.
Mounting Method: PCB surface mount soldering, with precise mounting dimensions and hole size guidance provided.
Product Weight: Approx. 30g, compact structure (31.8×28.8×19.3 mm) for space-saving installation.
UL / C-UL (File No. E475405)
TÜV (Certificate No. R 50616155)
CQC (Certificate No. CQC16002140939)
RoHS Directive compliant
Electric Vehicles & Charging Infrastructure: Main circuit control for On-Board Chargers (OBC) and Battery Management Systems (BMS); power module switching in DC charging stations.
Photovoltaic and Renewable Energy Systems: DC-side input switching in PV inverters; battery charge/discharge circuit control in energy storage systems.
Industrial Automation: High-power motor controllers, power distribution units (PDUs), uninterruptible power supply (UPS) systems.
Home Appliances and Commercial Equipment: High-power HVAC systems; industrial-grade washing machine and pump control.
Use the model code to precisely select your required configuration:
W12T-50 - [①1A] [②S] [③T] [④L] [⑤F] - [⑥XXX] [⑦DC12V]
① Contact Configuration: 1A (Normally Open) or 1C (Changeover)
② Structure Type: NII (Solder-resistant, for clean environments) / S (Plastic-sealed, for contaminated environments)
③ Contact Material: T (AgSnO₂)
④ Coil Power: NII (Standard) / L (Sensitive, low power consumption)
⑤ Insulation System: F (Class F)
⑥ Customer Special Code: For custom requirements
⑦ Coil Rated Voltage: Selectable from DC5V to DC110V
Example: W12T-50-1A-STLF-XXX-DC12V denotes: Normally Open contact, Plastic-sealed, AgSnO₂ contact, Sensitive low-power coil, Class F insulation, Coil voltage DC12V.
The W12T-50 relay delivers core assurance for your next-generation high-power, high-reliability products through rigorous engineering design, comprehensive safety certifications, and targeted environmental adaptability. Choosing W12T-50 means choosing safety, durability, and performance.
