W12T-50 Series New Energy Relay: High Load, High Insulation, Multiple Specifications, Designed for New Energy Equipment

High Insulation Design to Enhance System Operational Safety

New energy equipment operates under high-voltage conditions over long periods, placing stringent demands on relay insulation performance. The W12T-50 adopts a Class F UL insulation system. The breakdown voltage between coil and contacts is 2500 VAC for the standard type and up to 4000 VAC for the high-voltage type. The dielectric strength between open contacts is 1500 VAC for 1 minute, and the initial insulation resistance is ≥1000 MΩ (measured at 500 VDC). These design features help improve electrical isolation and provide reliable protection for safe and stable system operation.

Stable and Reliable, Suitable for Complex Industrial Environments

In addition to electrical performance, the W12T-50 also emphasises mechanical reliability and environmental adaptability. The relay operates stably within an ambient temperature range of –40°C to +85°C and a humidity range of 5% to 90%. Its mechanical life reaches 5×10⁶ operations, meeting the demands of long-term frequent operation. The product also exhibits good shock resistance (functional shock 98 m/s², destructive shock 980 m/s²) and vibration resistance (10 Hz~55 Hz, 1.5 mm double amplitude), making it suitable for on-board equipment and industrial control systems where high reliability is required.

Multiple Coil Voltage and Power Consumption Options to Fit Different Control Systems

To accommodate various control circuits, the W12T-50 is offered in two coil power consumption versions: standard type and sensitive type. The standard type has a coil power consumption of approximately 1.2 W and is available in six DC voltage ratings: 5V, 6.5V, 12V, 24V, 48V, and 110V. The sensitive type consumes about 0.9 W and covers the same voltage range. Both versions have a pickup voltage of ≤75% of the rated voltage and a drop-out voltage of ≥10% of the rated voltage. Operate time is ≤20 ms and release time is ≤10 ms. The unified coil design meets the needs of different control systems and allows flexible selection based on drive capability.

Two Protection Types to Suit Different Operating Environments

The W12T-50 is available in two enclosure styles: plastic sealed and flux proofed. The plastic sealed type is fully enclosed, effectively preventing the ingress of harmful gases such as H₂S, SO₂, NO₂, as well as dust. It is recommended for harsh environments such as industrial sites and outdoor charging piles. The flux proofed type only prevents flux penetration during soldering and is suitable for clean indoor equipment. Selection advice: for clean environments, the flux proofed type is recommended; for unclean environments (containing H₂S, SO₂, NO₂, dust, and other pollutants), the plastic sealed type is the preferred choice.

Compact Design for Easy Equipment Integration

The W12T-50 adopts a unified compact platform design with external dimensions of 31.8×28.8×19.3 mm. For dimensions without specified tolerances: dimensions ≤1 mm have a tolerance of ±0.2 mm; dimensions >1 mm and <5 mm have a tolerance of ±0.3 mm; dimensions ≥5 mm have a tolerance of ±0.5 mm. For PCB layouts, unspecified dimensions are always ±0.1 mm. Standard mounting dimensions and pin layouts facilitate rapid integration and product upgrades for equipment manufacturers.

Typical Application Areas

With its high load switching capability, high insulation performance, and mature platform design, the W12T-50 can be widely used in the following fields:

Electric vehicles: main circuit control in BMS battery management systems

Charging piles: on/off protection at AC/DC output terminals

Photovoltaic new energy: circuit switching in inverters and combiner boxes In these applications, the relay primarily performs functions such as power control, main circuit switching, and precharge control, providing stable and reliable current control solutions for the system.