CAT 079-1644 BLOC DE RACC

CAT 079-1644 is a Caterpillar original electrical junction box (junction box assembly), compatible with the electrical systems of 306E2/307E2 excavators and 226B3/236B3 skid steer loaders. It is used to centrally transfer signal and power lines for components such as sensors and solenoid valves. It has an IP67 protection rating and is suitable for outdoor high-vibration, dusty, and humid conditions.

Core Parameters and Information

Item Details
Part Model: CAT 079-1644 (0791644) Electrical Connection Box

Type: Sealed junction box for engineering machinery, with multiple interfaces and terminal blocks

Material: Flame-retardant ABS engineering plastic shell, copper terminal blocks, oil-resistant coating

Key Dimensions: Length 140 mm, Width 90 mm, Height 65 mm, Mounting hole spacing 110 mm (2 pieces)

Interface Configuration: 10 M12 threaded interfaces (6 signal, 4 power), compatible with waterproof plugs

Protection Rating: IP67, Vibration Resistance Rating: IEC 60068-2-6, Operating Temperature: -40℃ to +85℃

Rated Parameters: Rated Voltage: DC 32V, Rated Current: 10A (single channel), Insulation Resistance: ≥100MΩ

Compatible Models: 306E2/307E2 excavators, 226B3/236B3 skid steer loaders

Matching Relationships Use with matching waterproof plug, sealing ring, and mounting bolts.

Compatibility and Applications
Compatible Equipment: 306E2/307E2 mini excavators, 226B3/236B3 skid steer loaders, for centralized connection of electrical nodes on the boom, stick, or body.

Application Scenarios: Installed at electrical wiring convergence points, connecting sensor, solenoid valve, and controller wiring to protect circuits, stabilize signal transmission, and adapt to complex outdoor working conditions such as excavation and loading, preventing circuit damage, water ingress, and short circuits.

Compatible Usage: Uses with M12 waterproof plugs, sealing rings, and mounting bolts for quick wiring and reliable protection.

Installation and Maintenance Points
Installation: Select a dry, vibration-free location and tighten with M6 bolts (torque 8-10 N·m); check the interface sealing ring, connect wires according to terminal numbers, and tighten the interface nut to ensure waterproofing.

Maintenance: Check the sealing condition every 200 hours, clean oil and dust, check terminals for looseness and oxidation, and address any abnormalities promptly.

Replacement: First disconnect the power supply, remove the junction box, and connect the new part according to the original terminal numbers, ensuring that the wiring is correct and the seal is good.