Technical Specifications: Genuine VOLVO Master Battery Disconnect Switch Assembly 17418494Genuine VOLVO Master Battery Disconnect Switch Assembly — Main Power Isolation Safety Solution
The Genuine VOLVO Premium Heavy‑Duty Master Battery Disconnect Switch Assembly (Part Numbers: 17418494 / VOE 17418494 / 3987034), also known as Main Power Rotary Switch, isolates the whole machine electrical system from 24V battery power. Installed in battery compartment or pump bay, it cuts power to V‑ECU (11381435), alternator and starter via key‑operated mechanical disconnection. Replacing corroded switches prevents overnight battery drain, protects ECU from voltage spikes and enables emergency power shutdown.
Core Technical Advantages
Solid Copper High‑Current Contacts: High‑mass copper plates handle heavy cold‑cranking current without overheating or arcing.
IP65/IP66 Waterproof Composite Housing: Fiberglass‑reinforced shell resists grease, oil mist, heat and quarry dust ingress.
Vibration‑Proof Detent Lock with Removable Key: Positive mechanical locking prevents accidental switching under heavy‑duty vibration.
Tin‑Plated Heavy‑Duty Terminal Studs: Thick copper‑alloy studs securely clamp large‑gauge main battery power cables.
Technical Specifications
| Engineering Parameter | Technical Data / Specification Details |
|---|
| Component Assembly Part Numbers | 17418494 / VOE 17418494 / 3987034 |
| Component Classification | Heavy‑Duty Mechanical Master Battery Disconnect Switch Assembly |
| Rated Voltage | 12V‑24V DC for Heavy‑Duty Construction Machinery |
| Housing Material | Flame‑Retardant Glass‑Fiber Reinforced Composite |
| Mounting Type | Dual‑Bolt Heavy‑Duty Flange Mount |
| Protection Grade | IP65 / IP66 Waterproof & Dust‑Proof |
Master Application Fleet Guide
This battery disconnect switch fits VOLVO B‑series, C‑series & D‑series construction and mining excavators:
Compact Excavators: EC55C, EC60C, EC140C/D, EC160D, EC180D
Mid‑Size Excavators: EC200B/D, EC210B/D, EC220D, EC240B, EC250D, EC290B
Heavy Mining Excavators: EC300D, EC330B, EC350D, EC360B
Critical B2B Procurement & Maintenance Guidelines
B2B Procurement Strategy
Contact oxidation and arcing cause high‑resistance, low starter current and ECU fault codes. Stock 17418494/3987034 for emergency repair orders. Cross‑sell with alternators, starters and wiring harnesses for complete electrical system overhaul.
Common Failure Symptoms
Slow cranking or no‑start condition due to carbon‑pitted high‑resistance contacts
Random total cabin power loss caused by loose internal spring tension
Excessive overnight battery drain from parasitic leakage through cracked switch housing
Best Practice Overhaul Advisory:
Disconnect battery negative terminals first before replacement to avoid short‑circuit arcs damaging ECU. Clean terminals, apply anti‑corrosion grease, torque securely and test stable 24V power output after installation.
Global Brand Cross‑Reference Matrix
| Brand | Cross‑Reference Part Numbers |
|---|
| VOLVO Genuine PN | 17418494 / VOE 17418494 |
| Factory Interchange | 3987034 |
| Component Group | Master Battery Disconnect Switch / Main Power Isolation Key / Circuit Safety Break Unit |
Commercial Inquiry & Global Logistics:Supplier: Xuzhou Sinoswift Import & Export Co., Ltd.
Contact: +86 13701956981
Email:
[email protected]Logistics: Global Sea Freight and Fast‑Track Industrial Express Ready
All manufacturer names and model designations are for compatibility reference only. These genuine battery disconnect switches provide reliable main‑circuit isolation for global VOLVO construction, quarry and mining machinery fleets.
