B240700000472 Sany SY485C1 hydraulic excavator relay

B240700000472 Sany SY485C1 hydraulic excavator relay

The SANY SY485C1 hydraulic excavator B240700000472 relay is a “multi-functional control node” in the equipment’s electrical system. Manufactured strictly according to SANY’s original design specifications, electrical parameter standards, and stringent process requirements, it is specifically designed for extreme working conditions such as mining blasting areas, coastal high-humidity areas, and high-temperature Gobi deserts. As a core actuator in circuit control, it is widely used in critical circuits such as excavation action solenoid valve control, cooling fan start/stop, safety alarm systems, and auxiliary electrical switches. Through precise signal response and circuit switching, it ensures the coordinated operation of various systems and is the preferred original equipment manufacturer (OEM) part for the maintenance, upgrade, and replacement of the SY485C1 excavator’s electrical system.

This relay features a high-purity oxygen-free copper coil and silver-nickel alloy composite contacts. The coil undergoes vacuum impregnation and multi-layer insulation treatment, achieving an insulation resistance ≥100MΩ. It boasts high conductivity, low heat generation, and stable operation at rated voltages of 12V/24V (compatible with original vehicle specifications), withstanding ±15% voltage fluctuations and eliminating the risk of overload burnout. The silver-nickel alloy contacts undergo arc-strengthening treatment, resulting in a contact resistance ≤50mΩ and a switching life exceeding 150,000 cycles. This effectively suppresses arc erosion, prevents contact welding, and ensures stable switching under high-frequency operation. The housing is made of flame-retardant reinforced PA66 material and ultrasonic sealing technology, achieving an IP65+ protection rating. It can withstand a wide temperature range of -45℃ to 90℃, 25g peak vibration, and salt spray corrosion, making it fully suitable for dusty, high-humidity, and electromagnetically interference-prone construction environments. Internally equipped with a bidirectional transient voltage suppressor diode (TVS) and a shielding magnetic ring, it effectively absorbs circuit surge voltage and electromagnetic radiation, preventing interference to precision components such as sensors and controllers, and ensuring accurate control signal transmission.

The product uses a standardized plug-in interface with the same mounting pin layout as the original equipment manufacturer (OEM), perfectly matching the reserved mounting positions and wiring harness plugs of the SY485C1 excavator’s electrical control cabinet, allowing for direct replacement without wiring modifications. Its electrical parameters are highly compatible with the vehicle’s control logic, supporting rapid identification and matching. No additional debugging is required after installation; it can quickly restore the control functions of the corresponding circuits, reducing equipment downtime for maintenance and improving operational continuity.

Core Technical Parameters

Part Model: B240700000472
Part Name: Relay (Multi-functional Circuit Control)
Applicable Model: SANY SY485C1 Hydraulic Excavator
Material: High-purity oxygen-free copper coil, silver-nickel alloy composite contacts, flame-retardant PA66 shell, sealed and waterproof material
Process: Vacuum impregnation, ultrasonic sealing, contact arc strengthening, electromagnetic shielding treatment
Features: Precise action, strong anti-interference, temperature and corrosion resistance, ultra-long life, easy plug-and-play
Functions: Multi-circuit control switching, electromagnetic interference suppression, circuit surge protection, equipment coordination and linkage

Core Advantages

Seamless compatibility with original factory specifications, zero replacement threshold; silver-nickel composite contacts + oxygen-free copper coil, upgraded stability; IP65 + protection + wide temperature tolerance, suitable for extreme working conditions; built-in TVS transient protection, more reliable circuit safety; universal for multiple scenarios, reducing spare parts inventory costs.

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