The Wacker Neuson Relay is a genuine OEM relay designed for the CRT48-35V reversible plate compactor and the full APT series of water pumps, including the APT4S, APT4T, APT6S, APT6T, APT8S, and APT8T — spanning both standard and cold weather configurations with surge brake and electric brake variants. As a factory-sourced component, this relay is built to the exact electrical specifications required by these machines, ensuring correct circuit switching behavior and full compatibility with the original wiring harness. Wacker Neuson genuine OEM parts carry the manufacturer's backing, so you can install with confidence knowing the part is verified for your machine. If your compactor or pump is showing erratic operation, failing to start, or exhibiting electrical faults, the relay should be among the first components inspected.
Key Features
- Correct Switching Specs: — Manufactured to the exact coil voltage and contact rating required by the OEM circuit, ensuring proper electrical switching without over- or under-loading the system.
- Drop-In Connector Fit: — Matches the original relay socket and terminal layout on covered models, so it seats and locks into the existing harness without splicing or adaptation.
- Broad APT Series Coverage: — A single part number covers APT4S, APT4T, APT6S, APT6T, APT8S, and APT8T pump variants — including skid-mounted, surge brake, electric brake, and cold weather models — plus the CRT48-35V plate compactor.
- Electrical System Integrity: — A functioning relay is the gatekeeper for key powered circuits; a failed relay can prevent starting, disable pump operation, or cause intermittent electrical faults that are difficult to diagnose without the correct replacement on hand.
- Genuine OEM Assurance: — Sourced directly from Wacker Neuson, this is the same relay supplied during original equipment assembly — not a generic substitute selected by voltage range alone.
- Safe Circuit Control: — In electrically controlled brake and pump applications, relay failure can result in uncontrolled or absent brake engagement; using the correct OEM relay maintains the intended safety behavior of brake-equipped APT models.
A relay is an electrically operated switch that allows a low-current control signal — such as one from a key switch or control module — to open or close a higher-current circuit that powers a motor, pump, or brake actuator. In the APT pump and CRT compactor applications, the relay manages power delivery to critical operating circuits, meaning the machine won't run correctly — or at all — if the relay fails to close or sticks open. A worn or faulty relay commonly produces symptoms like a machine that won't start, circuits that cut out under load, or inconsistent response from electrically controlled braking systems.
Part Details
| Part Number | 5000182959 |
|---|---|
| Old Part Number | 0182959 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Relay |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| CRT48-35V | CRT48-35V | 5000620112 |
| CRT48-35V | CRT48-35V EU | 5000620807 |
| APT6S Pump w/Skid | APT6S | 5200018982 |
| APT6T Pump, Surge Brake | APT6T | 5200019646, 5200019647 |
| APT6T Pump, Surge Brake, Cold Weather | APT6T CW | 5200019794, 5200019795 |
| APT4S Pump w/Skid | APT4S | 5200018977 |
| APT8S Pump w/Skid | APT8S | 5200018987 |
| APT4T Pump, Surge Brake | APT4T | 5200019643, 5200019644 |
| APT8T Pump, Surge Brake | APT8T | 5200019648, 5200019649 |
| APT4T Pump, Surge Brake, Cold Weather | APT4T CW | 5200019792, 5200019793 |
| APT8T Pump, Surge Brake, Cold Weather | APT8T CW | 5200019796, 5200019797 |
| APT4S Pump w/Skid, Cold Weather | APT4S CW | 5200019798 |
| APT6S Pump w/Skid, Cold Weather | APT6S CW | 5200019799 |
| APT8S Pump w/Skid, Cold Weather | APT8S CW | 5200019800 |
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.
