Bomag 05840030 Maintenance Switch

The Bomag 05840030 Maintenance Switch is a genuine OEM component designed for Bomag BC-series refuse/landfill compactors, BC-series soil compactors, and BM-series cold milling machines. As a direct factory replacement, this switch meets the original electrical specifications required by each compatible machine in the lineup. Confirmed fitment spans models including the BC 1172 RB-3, BC 972 RB-3, BC 772 RB-3, BC 772 RS-3, BC 772 RB-4, BC 772 RS-4, BC 772 EB-4, BC 672 RB-3, BC 672 RB-4, BC 473 RB-3, BC 473 EB-3, BM 1000/35, BM 1200/35, BM 1200/35 T4f, BM 1300/35, BM 1300/35 T4f, BM 2000/75, BM 2000/75 TE, BM 2200/75, and BM 2500/75. Sourcing part number 05840030 directly from the OEM catalog ensures the correct switching behavior, connector interface, and operational logic your machine depends on.

Key Features

• OEM Electrical Spec Match — manufactured to the original switching parameters and connector spec, ensuring correct circuit behavior without adaptation
• Direct Drop-In Replacement — interfaces with the existing wiring harness and mounting position exactly as the factory-installed switch did
• Broad Verified Fitment — confirmed for BC-series refuse/landfill compactors, BC-series soil compactors, and BM-series cold milling machines including the BC 772 RB-4, BC 672 RB-4, BM 2500/75, and more
• Operational Safety Integrity — a maintenance switch governs access to controlled machine functions during service; a failed or incorrect switch can compromise safe maintenance procedures and operator protection
• Genuine Bomag OEM Part — sourced directly from Bomag's parts catalog, so fitment, function, and longevity align with the original design intent

A maintenance switch controls whether specific machine systems are enabled or locked out during inspection and service intervals. On heavy compactors and cold milling machines, this switch is typically part of the safety interlock circuit that prevents unintended machine movement or system activation while technicians are working on or around the equipment. When the switch fails or sends incorrect signals, machines may not enter or exit maintenance mode correctly, creating both operational disruptions and potential safety hazards. Replacing a worn or faulty switch with a genuine OEM unit like the Bomag 05840030 restores the correct switching logic the machine's control system expects.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.