The Wacker Neuson Relay 12Vdc 50A is a genuine OEM component designed for the G-series portable generators and LTW-series light towers. As a direct factory replacement, this 12-volt, 50-amp relay matches the original electrical specification and slots into the control circuit without modification. It is compatible across a wide range of configurations including the G50, G70, G95, G100, G120, G130, G150, G180, and G320 generator models, as well as LTW20Z1 and LTW20Z3-V S light tower variants. Sourcing the genuine Wacker Neuson part ensures the relay operates within the designed switching load parameters, protecting downstream electrical components from irregular current events.
Key Features
- Correct 12V/50A Switching Specification — Matched to the exact voltage and amperage rating of the original relay, ensuring the control circuit switches loads cleanly without overloading contacts.
- Genuine OEM Quality — Manufactured to Wacker Neuson's electrical component standards, with contact materials and coil resistance calibrated for the G-series and LTW-series control systems.
- Broad Cross-Model Compatibility — Fits G50, G70, G95, G100, G120, G130, G150, G180, and G320 portable generators, plus LTW20Z1 and LTW20Z3-V S light towers across multiple Tier configurations.
- Drop-In Terminal Fit — Designed to seat directly into the existing relay socket with the correct pin configuration, eliminating guesswork during installation.
- Protects Electrical System Integrity — A faulty relay can cause intermittent starting failures, stuck-on loads, or control board damage; replacing with a correctly rated OEM unit restores proper circuit protection.
- Electrical Safety Compliance — Using a relay rated to the original 12Vdc 50A specification is critical on generator and light tower control circuits where undersized or mismatched relays create overheating and fire risk.
A relay is an electrically operated switch that uses a low-current control signal — in this case 12 volts DC — to open or close a high-current circuit rated at up to 50 amps. On Wacker Neuson generators and light towers, relays like this one control key functions such as engine starting circuits, fuel shutdown solenoids, and load management switching within the control panel. When a relay fails, it can prevent the machine from starting, cause it to shut down unexpectedly, or leave a circuit energized when it should be off — all of which interrupt operation and can cause further electrical damage if not addressed promptly.
Part Details
| Part Number | 5200012171 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Relay 12Vdc 50A |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| G70-GENERATOR, SKID, CUSTOM, DEERE T3 | G70 | 5000620648, 5000620647, 5000620711, 5000620646, 5200006879, 5200014464, 5200008342, 5200008339, 5200008340, 5200023228, 5200015952, 5200001318, 5100022041, 5100042499, 5100022040, 5100025814, 5100025838, 5100042498, 5200003220, 5200008343 |
| LTW20Z-1, LIGHT TOWER 60Hz, ISUZU, CUSTOM, T4i | LTW20Z1 | 5000620842, 5000620375, 5200004205, 5200004096, 5200023191, 5200024872 |
| G100-GENERATOR, SKID, CUSTOM, DEERE T3 | G100 | 5000620651, 5100045499, 5100045555, 5100033312, 5100025816, 5100026958, 5100029211 |
| G120-GENERATOR, SKID, CUSTOM, DEERE T3 | G120 | 5000620654, 5200014467, 5100025818, 5100025840 |
| G50-GENERATOR, SKID BASE, CUSTOM T4i | G50 | 5200001062, 5200014322, 5200014319, 5200014320, 5200014323, 5200017829, 5200022589, 5100042434, 5200017830, 5100042430, 5100042435, 5100045494, 5100042431, 5100042433, 5100045085, 5100045493, 5100042432, 5200015909, 5100022009, 5100022008, 5100025812, 5100029210, 5100026955 |
| LTW20Z3-V S LIGHT TOWER, COLD WEATHER, T4i | LTW20Z3-V S | 5200018566, 5200018558, 5200018562, 5200023196, 5100015094, 5100022126 |
| LTW20Z1-V S LIGHT TOWER, COLD WEATHER, T4i | LTW20Z1-V S | 5200018565, 5200018557, 5200018561, 5200024875, 5200023195, 5100015093, 5100022125 |
| G180 switchable 600 VOLT Tier 3 GENERATOR, CUSTOM,TC | G180 | 5200014470, 5200014471, 5200014469, 5100025842 |
| Light Tower | LTW20Z1-V | 5200012880, 5200012884, 5200012866 |
| Mobile Generator | G95 | 5200016642, 5200020677, 5100029186 |
| G130 Generator, Custom T4 | G130 | 5200023234, 5100045560, 5100045566 |
| G150 Generator, Custom T4i | G150 | 5200023237, 5100022044, 5100022045, 5100026980, 5100026981, 5100026982, 5100029212 |
| Mobile Generator | G60 | 5200015951, 5200016641, 5100029185 |
| Generator | G40 | 5200015906, 5200015907, 5200016640, 5100029184 |
| Mobile Generator | G320 | 5200008718, 5200008717, 5100018533, 5200010261 |
| G110 Generator, Brazil, Value | G110 | 5100022042, 5100022043 |
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.
