Technical Overview and Application Profile The FalconSupply Kit features the authentic, Genuine Trombetta 634-1261-212 DC Contactor Solenoid. This component is not a generic reproduction; it is the original equipment specifically engineered for intermittent duty cycle applications in harsh mobile environments. The unit features a sealed, high-temperature Liquid Crystal Polymer housing rated to IP67 standards, rendering it impervious to road dust, salt spray, pressure washing, and hydraulic fluid exposure. Uniquely, this 634 series solenoid utilizes a case-grounded design where the internal coil circuit is grounded directly to the curved mounting bracket. This eliminates the need for an external ground wire on metal chassis installations, streamlining the setup for single-acting hydraulic power units (Power Up / Gravity Down) commonly found on dump trailers, liftgates, and electric snow plows. Technical Specifications Manufacturer: Trombetta (Genuine OEM) Model: 634-1261-212 Voltage Rating: 12 Volts DC Duty Cycle: Intermittent (25% Duty Cycle) Max On-Time: 6 Minutes Amperage (Continuous): 150 Amps Amperage (Inrush): 800 Amps Amperage (Interrupt): 250 Amps Circuitry: Single Pole, Single Throw (SPST) Coil Termination: (1) 10-32 Stud Contact Termination: (2) 5/16"-24 Copper Studs Grounding: Case Grounded via Mounting Bracket Mounting: Curved Bracket (2.22" Radius) Compatibility and Cross-Reference Compatible with Monarch Hydraulics / Bucher Hydraulics: Fits Dyna-Jack and M-Series Power Units. Replaces part numbers 07518, 03427, 04303, 12664. Replaces Service Kit Component: Replaces the solenoid used in K17757 Service Kit. Compatible with Maxon Liftgates: Replaces part numbers 260270, 262939, 263061, 223741, 251880, 53395 (Fits Tuk-A-Way and Column Lifts). Compatible with Waltco Liftgates: Replaces part number 75089833. Compatible with Tommy Gate: Replaces part number 967. Compatible with Thieman Tailgates: Replaces part number 4421620. Compatible with Fenner Stone / SPX: Replaces part number 4795-AA. Compatible with KTI Hydraulics: Fits power units requiring Prestolite configuration 15-544. Compatible with Dump Trailers: Fits 12V hydraulic pumps on Big Tex (70SR, 90SR, 10SR), PJ Trailers, Load Trail, and Bri-Mar. Aftermarket Interchange: Replaces Prestolite / Ametek SAZ-4201FY, SAZ-4201ER, SAZ-4201BJ, and Buyers Products PU3593. Installation and Grounding Note Because this unit is case-grounded, the mounting bracket must make electrical contact with the vehicle frame or motor casing. If mounting to a non-conductive surface such as plastic, wood, or a heavily painted frame, a ground strap (not included) must be installed from one of the mounting bolts to the battery negative terminal. Failure to provide a chassis ground path will prevent the coil from energizing. FalconSupply Kit Contents (1) Genuine Trombetta 634-1261-212 DC Contactor Solenoid (2) 5/16"-24 Serrated Flange Hex Nuts (Zinc Plated) – Replaces standard split washers for superior vibration resistance on high-current studs. (1) 10-32 Serrated Flange Hex Nut (Zinc Plated) – For secure coil wire retention. (1) AGS Dielectric Grease Packet – Applied to terminals to prevent corrosion and voltage drop.