The Wacker Neuson Slow Release Relay is a genuine OEM component designed for a wide range of Wacker Neuson RD-series tandem rollers, including the RD18, RD24, RD27, RD28, RD40, and RD45 model families. As a direct OEM part, the is manufactured to the same specifications as the original relay fitted at the factory, ensuring a clean, correct installation with no adaptation needed. This relay covers an extensive fitment range across multiple RD-series configurations including standard, C, and O variants. If your tandem roller is experiencing delayed or erratic electrical switching behavior, this is the part to restore proper operation.
Key Features
- Genuine OEM Electrical Specification — Matched to the original relay's switching timing and load rating, so the slow-release function operates exactly as designed — no guesswork on compatibility.
- Drop-In Replacement — Connects directly to the existing relay socket in the machine's electrical panel, using the original mounting and connector arrangement for a straightforward swap.
- Broad RD-Series Coverage — Fits RD18, RD24, RD27, RD28, RD40, and RD45 tandem roller families across standard, C (combination), and O (offset) drum configurations, as well as .3-series variants.
- Controlled Power Sequencing — A correctly functioning slow-release relay ensures the machine's electrical circuits de-energize in the right sequence, protecting sensitive components from voltage spikes on shutdown.
- Electrical System Safety — Relays that fail or stick can cause unintended circuit activation or improper shutdown sequences; replacing with a verified OEM part restores safe, predictable electrical behavior.
- Sourced Direct from Wacker Neuson — Genuine OEM part backed by Wacker Neuson's parts program, with the part number 5100029566 traceable to the original equipment build specification.
A slow release relay is an electromechanical switching component that introduces a deliberate time delay before a circuit opens or de-energizes. On Wacker Neuson tandem rollers, this relay controls the timing of electrical shutdown sequences, allowing certain systems to power down in the correct order and preventing abrupt disconnection that could damage electronics or cause unintended machine behavior. When this relay fails — whether it sticks closed, opens too quickly, or stops functioning altogether — operators may notice erratic behavior during shutdown, warning lights, or systems that fail to respond correctly, making timely replacement essential for safe and predictable machine operation.
Part Details
| Part Number | 5100029566 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Slow Release Relay |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD18-80 Tandem Roller | RD18-80 | 5100011382, 5100047360, 5100055774 |
| RD18-100 Tandem Roller | RD18-100 | 5100011383, 5100047361, 5100055775 |
| RD18-100 C Tandem Roller | RD18-100 C | 5100011384 |
| RD24-100 Tandem Roller | RD24-100 | 5100011385, 5100047374 |
| RD27-120 Tandem Roller | RD27-120 | 5100011386 |
| RD24-100 C Tandem Rollers | RD24-100 C | 5100011387 |
| RD27-120 C Tandem Roller | RD27-120 C | 5100011388 |
| RD24-100 O Tandem Roller | RD24-100 O | 5100011389 |
| RD27-120 O Tandem Roller | RD27-120 O | 5100011390 |
| RD40-130 Tandem Roller | RD40-130 | 5100011391 |
| RD45-140 Tandem Roller | RD45-140 | 5100011392 |
| RD40-130 C Tandem Roller | RD40-130 C | 5100011393 |
| RD45-140 C Tandem Roller | RD45-140 C | 5100011394 |
| RD40-130 O | RD40-130 O | 5100011395 |
| RD45-140 O Tandem Roller | RD45-140 O | 5100011396 |
| RD18-80 Tandem Roller | RD18-80 US | 5100027572 |
| RD18-100 Tandem Roller | RD18-100 US | 5100027573 |
| RD18-100 C Tandem Roller | RD18-100 C US | 5100027574 |
| RD 24-100.3 | RD 24-100.3 | 5100032197 |
| RD27-120 | RD 27-120.3 | 5100032198 |
| Vibration Roller | RD18-80 SE | 5100044988 |
| Vibration Roller | RD18-100 SE | 5100044989 |
| RD 18-100 C | RD18-100c | 5100047362, 5100055776 |
| Vibration Roller | RD18-100c 3 | 5100047363 |
| RD24-100c.3 | RD24-100c.3 | 5100047370 |
| RD27-120c | RD27-120c.3 | 5100047371 |
| RD24-100o.3 | RD24-100o.3 | 5100047372 |
| RD27-120o | RD27-120o.3 | 5100047373 |
| RD28-120 | RD28-120 | 5100047375 |
| RD24-100c | RD24-100c | 5100047376 |
| RD28-120c | RD28-120c | 5100047377 |
| RD24-100o | RD24-100o | 5100047378 |
| RD28-120o | RD28-120o | 5100047379 |
| RD40-130.3 | RD40-130.3 | 5100047395 |
| RD45-140.3 | RD45-140.3 | 5100047396 |
| RD40-130c.3 | RD40-130c.3 | 5100047397 |
| RD45-140c.3 | RD45-140c.3 | 5100047398 |
| RD40-130o.3 | RD40-130o.3 | 5100047399 |
| RD45-140o.3 | RD45-140o.3 | 5100047400 |
| RD18-80.3 | RD18-80.3 | 5100055946 |
| RD18 | RD18-100.3 | 5100055947 |
| RD18-100c.3 | RD18-100c.3 | 5100055948 |
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.
