Genuine Trombetta 634-1261-212 12V Solenoid Switch Relay Kit, Replaces Monarch B for Sale

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Genuine Trombetta 634-1261-212 12V Solenoid Switch Relay Kit, Replaces Monarch B For Sale

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Genuine Trombetta 634-1261-212 12V Solenoid Switch Relay Kit, Replaces Monarch B:
$71.99

GENUINE TROMBETTA OEM COMPONENT: This kit features the authentic Trombetta 634-1261-212 PowerSeal DC Contactor Solenoid Relay. It is not an aftermarket copy. Technical Ratings: 12 Volt DC, Intermittent Duty (25% Duty Cycle), 150 Amps Continuous Carry, 800 Amps Inrush, 250 Amps Interrupt. Configuration: Case Grounded (3-Terminal design). The coil circuit is grounded internally to the curved mounting bracket, requiring a metal-to-metal mounting surface for operation. Housing: IP67 Sealed High-Temperature Liquid Crystal Polymer for dust and water resistance. Contact Material: Copper. Replaces Trombetta 634-1261-212-08.
HYDRAULIC PUMP & HPU APPLICATION: Direct replacement for 12V DC solenoids used on Monarch Hydraulics and Bucher Hydraulics Dyna-Jack and M-Series Power Units. Replaces Monarch Bucher part numbers 07518, 03427, 04303, 12664, and Service Kit K17757. Compatible with KTI Hydraulics systems requiring a grounded solenoid (matches Prestolite 15-544 configuration). Replaces Fenner Stone / SPX 4795-AA. Used in single-acting Power Up / Gravity Down hydraulic systems found on dump trailers, aerial lifts, material handling equipment, and RV slide-out hydraulic power packs.
LIFTGATE, TRAILER & SNOW PLOW COMPATIBILITY: Compatible with widespread Liftgate applications including Maxon Tuk-A-Way and Column lifts (Replaces Maxon 260270, 262939, 263061, 223741, 251880, 53395), Waltco (Replaces 75089833), Tommy Gate (Replaces 967), and Thieman (Replaces 4421620). Fits 12V hydraulic pump motors on Dump Trailers including Big Tex (70SR, 90SR, 10SR), PJ Trailers, Load Trail, and Bri-Mar inserts. Also compatible with Western and Meyer Snow Plow motors utilizing a standard case-grounded solenoid switch.
CROSS REFERENCE & TECHNICAL GROUNDING NOTES: Replaces Prestolite / Ametek Switch SAZ-4201FY, SAZ-4201ER, SAZ-4201BJ, and Buyers Products PU3593. Commonly referred to as the "Bear" solenoid. Important Grounding Note: Unlike the 684 series (Isolated Ground), this 634 series unit relies on the mounting bracket for the negative connection. If mounting to a non-conductive surface (plastic, wood, or heavy paint), a ground strap must be connected from the mounting bolt to the vehicle chassis or battery negative to ensure the magnetic coil engages.
FALCONSUPPLY INSTALLATION KIT: Package contains (1) Genuine Trombetta 634-1261-212 Solenoid and premium installation hardware: (2) 5/16-24 Serrated Flange Hex Nuts (Zinc Plated) for secure high-current cable retention, (1) 10-32 Serrated Flange Hex Nut for the coil terminal, and (1) Pack of AGS Dielectric Grease. The serrated flange nuts are superior to standard split washers, providing increased resistance to vibration loosening common in mobile hydraulic dump trailer and liftgate operations. The AGS grease prevents corrosion on exposed electrical connections.

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.