08088-30000 BR263 24V 4255762 Positive Electrode Relay Battery Switch for Komatsu PC300LC-8 PC350-8 Excavator

Product SpecificationsProduct Type: Battery Relay / Battery Master Switch / Power RelayOEM Part Numbers: 08088-30000, BR263, 4255762Operating Voltage: 24V DCMain Rated Current: 300AMain Voltage Range: 6-48V DCMain Voltage Drop: ≥80mv at 100A/300A loadDielectric Strength: 1000V (1 minute, no breakdown)Short Time Overload Capacity: 4le (1200A) for 1 minuteDC Coil Voltage Range: 6-220VHousing Material: MetalSpecial Feature: Glue-sealed positive electrode power switch with attached lead wireCompatible for Komatsu Models: PC300LC-8, PC350-8, PC200, PC200-6, PC60, PC120, PC300, PC400 seriesFunction: Controls high current flow from battery to starter and electrical systemsPackage Contents1 x Battery Relay Switch (with attached positive electrode lead wire)Note: Mounting hardware and terminal connectors are not included. Reuse original components if in good condition.🌟 Critical Pre-Purchase & Installation NotesPart Number Verification is Mandatory: This battery relay is NOT universal. You MUST verify the part number on your existing relay before ordering. This unit replaces 08088-30000, BR263, and 4255762 specifically. If your old relay has a different number, do not assume compatibility without confirming with your equipment's service manual or the seller.Electrical System Precautions: Always disconnect the battery (negative terminal first) before working on any electrical components. Battery relays carry very high currents - ensure all connections are clean and tight to prevent arcing, overheating, or fire. Loose connections can cause voltage drop and poor starting performance.Installation Warning: Professional installation by a qualified heavy equipment technician is strongly recommended. Do not attempt to disassemble or repair a failed relay - replace the entire unit. Ensure the attached positive lead wire is properly routed and secured away from moving parts or heat sources. After installation, verify that the starter engages and disengages properly. If the starter runs continuously after key release, immediately disconnect the battery - this indicates a relay with welded contacts.Maintenance Note: Periodically inspect the relay connections for corrosion, looseness, or heat damage. Clean and tighten connections as needed. A failing relay may produce intermittent starting issues before complete failure - replace at first sign of trouble to avoid being stranded.

• [🌟 OEM Replacement] 24V battery relay directly replaces for Komatsu part numbers 08088-30000, BR263, and 4255762, ensuring proper fitment for your excavator's electrical system with included positive electrode lead wire.
• [🌟 For Komatsu Excavator Models] Specifically compatible with Komatsu PC300LC-8 and PC350-8 excavators, as well as PC200, PC200-6, PC60, PC120, PC300, and PC400 series models using this relay configuration.
• [🌟 High Current Capacity] Rated at 300A main current with 6-48V main voltage range and 1000V dielectric strength, this power switch relay handles heavy electrical loads for reliable starter and equipment operation.
• [🌟 Built-in Positive Lead Wire] Features a glue-sealed positive electrode power switch with attached connecting wire, simplifying installation and ensuring secure electrical connection to the battery system.
• [🌟 Prevents Circuit Control Failure] Designed to replace worn or failed relays, this battery master switch maintains proper electrical circuit control, preventing starting issues and electrical system malfunctions.