--- product_id: 185194876 title: "Generator Controller 501K Manual Key Start 501K for Engine Control Module" price: "C$4218" currency: NIO in_stock: true url: https://www.desertcart.ni/products/185194876-generator-controller-501k-manual-key-start-501k-for-engine-control store_origin: NI region: Nicaragua --- # LED fault annunciation & alarms 3-position manual key switch Adjustable overspeed protection timer Generator Controller 501K Manual Key Start 501K for Engine Control Module **Price:** C$4218 **Availability:** βœ… In Stock ## Summary > πŸ”‹ Take command with confidence β€” manual control meets smart protection! ## Quick Answers - **What is this?** Generator Controller 501K Manual Key Start 501K for Engine Control Module - **How much does it cost?** C$4218 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/185194876-generator-controller-501k-manual-key-start-501k-for-engine-control) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Instant Fault Alerts:** Stay ahead with dedicated LED indicators for low oil, high temp, overspeed & more. - β€’ **Smart Safety Shutdown:** Automatic engine shutdown on fault detection ensures ultimate protection. - β€’ **Precision Manual Control:** Effortlessly start, run, and stop your engine with a sleek 3-position key switch. - β€’ **Charge Failure Monitoring:** Vehicle-style warning lamp alerts you instantly to alternator charge issues. - β€’ **Customizable Overspeed Guard:** Adjust trip speed from 90% to 130% for tailored engine safety. ## Overview The Generator Controller 501K is a robust manual engine control module featuring a front-panel 3-position key switch for start, run, and stop functions. It provides real-time LED fault annunciation for critical engine alarms including low oil pressure, high temperature, and optional overspeed protection with adjustable trip levels. Automatic shutdown safeguards the engine by cutting fuel/ignition upon fault detection, while charge failure monitoring ensures reliable alternator performance. Designed for professionals demanding precise manual control combined with advanced safety features. ## Description Product description Generator Controller 501K Manual Key Start or Engine Control Module 501 The Model Genset controller 501K is a Manual Engine Control Module , which has been designed to manually control the engine via a key switch on t front panel. The Genset controller 501K is used to start and stop the engine, indicating fault conditions; automatically shutting down the engine and indicating the engine failure by LED giving true first up fault annunciation. Operation of the module CONTROLLER 501K is via a three position key switch mounted on the front panel with STOP( O ), RUN( I ) and START( II ) positions. In the β€˜ O ’ position the DC provide is removed from the module and the run relay and alarm output are de-energised. If the switch is turned to the β€˜ I ’ position the module is powered up and the run relay is energised, activating the engine fuel/ignition system and the protection hold-off timer is initiated. If the switch is moved to the β€˜ II ’ position and held against the spring return, a positive provide is applied to the relevant output terminal and on to the starter motor. Once the engine has started the switch should be released and allowed to return to the β€˜ I ’ position. Generator Controller 501K Operation of any of the following alarms; Low Oil Pressure, High Engine Temperature, Auxiliary Shutdown, Overspeed ( Optional ), will cause the run relay to de-energise. This will remove the fuel/ignition provide from the engine and bring it to rest. The alarm output will be activated giving a positive DC output. Each alarm channel has it’s own LED indicator and once activated no further alarm conditions will be accepted. The alarm output and relevant LED will remain active until the unit is reset by turning the switch to the β€˜ O ’ position. Overspeed Protection ( Optional ) is achieved by the fitment of an additional PCB in the module. This provides integral overspeed protection derived from either the generator HZ output or the engine magnetic pick-up ( specified on ordering ). The overspeed circuit continuously monitors the engine speed and will shut down the engine immediately if a pre-set speed level is exceeded. This trip level is adjustable from 90% to 130% of full rated speed and is suitable of both 50Hz or 60Hz systems. During engine cranking and for a short time afterwards the protection hold-off timer is active and the relevant alarms inputs are inhibited. This enables the engine to start and achieve normal running conditions. Once the timer has expired the inputs are enabled providing normal protection from the module. Charge Failure warning is also provided by monitoring the WL terminal on the charge alternator. This operates on a similar principal to the warning lamp fitted in a motor vehicle, should the output fail the charge fail LED will illuminate. The module will also provide the alternator excitation current via this connection. ## Features - The Model Genset controller 501K is a Manual Engine Control Module, which has been designed to manually control the engine via a key switch on t front panel. - The Genset controller 501K is used to start and stop the engine, indicating fault conditions; automatically shutting down the engine and indicating the engine failure by LED giving true first up fault annunciation. - Operation of the module CONTROLLER 501K is via a three position key switch mounted on the front panel with STOP(O), RUN(I) and START(II) positions. - In the β€˜O’ position the DC provide is removed from the module and the run relay and alarm output are de-energised. - If the switch is turned to the β€˜I’ position the module is powered up and the run relay is energised, activating the engine fuel/ignition system and the protection hold-off timer is initiated. If the switch is moved to the β€˜II’ position and held against the spring return, a positive provide is applied to the relevant output terminal and on to the starter motor. ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #738,666 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #11,697 in Outdoor Generators & Portable Power | | Customer Reviews | 3.8 out of 5 stars 5 Reviews | ## Images ![Generator Controller 501K Manual Key Start 501K for Engine Control Module - Image 1](https://m.media-amazon.com/images/I/51p5JbpchAL.jpg) ## Frequently Bought Together - DSE501K Generator Controller Manual Key Start DSE 501K for Engine Control Module - DEVMO AVR SX460 Automatic Voltage Regulator Control Models Accessories Compatible with Stamford Generator Genset - Thunder Parts SX460 AVR Generic Replacement for Cummins SX460 Automatic Voltage Regulator | 2 Year Warranty! --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ni/products/185194876-generator-controller-501k-manual-key-start-501k-for-engine-control](https://www.desertcart.ni/products/185194876-generator-controller-501k-manual-key-start-501k-for-engine-control) --- *Product available on Desertcart Nicaragua* *Store origin: NI* *Last updated: 2026-07-07*