B240700000473 Sany SY485C1 hydraulic excavator relay

B240700000473 Sany SY485C1 hydraulic excavator relay

The SANY SY485C1 hydraulic excavator relay (B240700000473) is the “intelligent switch hub” of the equipment’s electrical control system. Manufactured strictly according to SANY’s original design standards, electrical parameters, and process specifications, it is specifically designed for harsh working conditions such as mining, infrastructure construction, and earthmoving, characterized by strong vibrations, high dust levels, and fluctuating high and low temperatures. As a key component for low-voltage control of high-voltage and small-current control of large-current, it is widely used in core circuits such as air conditioning systems, lighting systems, hydraulic pump control, and sensor signal amplification. It is responsible for circuit connection and disconnection, signal conversion, and overload protection, directly ensuring the stable operation of the electrical system. It is a high-quality spare part for electrical fault repair and control function restoration in the SY485C1 excavator.

This relay features a high-quality electromagnetic coil and silver alloy contacts. The coil winding is precision-wound and insulated, resulting in excellent conductivity and low heat loss. It can withstand long-term rated voltage fluctuations (±10%) without easily burning out or causing open circuits. The silver alloy contacts have low contact resistance and strong arc-extinguishing performance, with a switching life of over 100,000 cycles. This effectively prevents arc erosion and contact adhesion, ensuring accurate and reliable switching action. The housing is made of reinforced flame-retardant engineering plastic with a fully sealed encapsulation structure, achieving an IP65 protection rating. It can withstand a wide temperature range of -40℃ to 85℃, 20g of continuous vibration, and corrosion from dusty and humid environments, preventing short-circuit faults caused by sand and gravel impacts and moisture intrusion during construction. Internally, it integrates a back EMF suppression circuit and an anti-interference shielding layer, effectively resisting electromagnetic interference and voltage surges in the equipment’s electrical system, preventing false triggering, and adapting to the complex electromagnetic environment of excavators.

The product’s mounting pin positions, interface specifications, and electrical parameters (rated voltage, rated current, coil resistance) strictly adhere to original manufacturer standards, ensuring a perfect match with the SY485C1 excavator’s electrical control cabinet and wiring harness plugs. The mounting holes precisely align with the original vehicle’s pre-drilled locations, and the plug-and-play design allows for easy installation and removal, enabling quick replacement without specialized tools. It is fully compatible with the vehicle’s control system communication logic, providing immediate use and quickly restoring the control functions of the corresponding circuits, ensuring stable operation of the equipment’s electrical system and minimizing downtime.

Core Technical Parameters

Part Model: B240700000473
Part Name: Relay (Electrical Control Switch)
Applicable Model: SANY SY485C1 Hydraulic Excavator
Material: High-quality electromagnetic coil, silver alloy contacts, flame-retardant engineering plastic, sealed protective material
Process: Precision winding, sealed encapsulation, contact reinforcement treatment, anti-interference calibration
Features: Sensitive switching, stable pressure resistance, vibration and weather resistance, anti-electromagnetic interference, flame-retardant and safe
Functions: Circuit on/off control, signal conversion and amplification, overload protection, low-voltage control of high-voltage

Core Advantages

Original factory standard precise fit, convenient installation; silver alloy contacts + high-quality coil, long service life; IP65 protection + wide temperature design, adaptable to harsh working conditions; anti-interference + arc extinguishing design, stable operation; ensures electrical system safety and reduces maintenance costs.

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